Psychotherapeutic and Cognitive Remediation Approaches




© Springer Science+Business Media New York 2015
William B. Barr and Chris Morrison (eds.)Handbook on the Neuropsychology of EpilepsyClinical Handbooks in Neuropsychology10.1007/978-0-387-92826-5_11


11. Psychotherapeutic and Cognitive Remediation Approaches



Luba Nakhutina 


(1)
SUNY Downstate Medical Center, 450 Clarkson Ave., Box 1275, Brooklyn, NY 11203, USA

 



 

Luba Nakhutina



Keywords
EpilepsyNeuropsychologyPsychotherapyCognitive remediationPsychiatric disordersDepressionAnxietyPsychosisQuality of lifeCognitive behavioral therapyBiofeedbackMemory deficit


As the medical management of epilepsy advanced, it became evident that a considerable number of patients with epilepsy (PWE), including those with well-controlled seizures, have psychological and cognitive problems and are in need of further support. The lifetime prevalence of depressive disorders, anxiety disorders, and suicidal thoughts is all significantly higher in PWE than in the general public (Hermann, Seidenberg, & Jones, 2008). There are numerous psychosocial consequences associated with epilepsy, including stigmatization and social isolation (Morrell, 2002), which contribute to distress and poor coping with the disease. Cognitive impairment, particularly memory dysfunction, is experienced by many epilepsy patients, and these deficits negatively impact their functional and social independence. While ictal and postictal cognitive and behavioral disturbances have been long recognized and targeted in treatment, interictal disturbances in cognition and mood remain largely unaddressed, although in some individuals these problems may be more disabling than the seizures themselves.

Emotional distress and persistent cognitive disturbance associated with epilepsy are major causes of disability and poor quality of life (QOL) in this population. Epilepsy patients consistently report lower education, higher rates of unemployment, lower income, and being single compared with people without epilepsy (Hermann et al., 2008). Unemployment or reduced employment options and earning potential of PWE are much more frequent than in the general population, and according to some studies, as much as double that of the general population (Smeets, van Lierop, Vanhoutvin, Aldenkamp, & Nijhuis, 2007). Patients’ abilities to manage their epilepsy treatment and adhere to medication regimens are also impacted by emotional and cognitive problems. In fact, treatment nonadherence is PWE is high, with estimates ranging from 20 to 60 %. Nonadherence naturally results in increased seizures and increased health-care utilization costs and is the most significant risk for sudden unexplained death in epilepsy or SUDEP (Faught, Duh, Weiner, Guerin, & Cunnington, 2008, 2009, Faught, Weiner, et al., 2009). Finally, studies have shown that epilepsy patients report lower QOL compared to persons with other chronic illnesses and disabilities (e.g., Hermann et al., 1996). Symptoms of depression and seizure worry were shown to be the most important factors affecting QOL in patients with intractable epilepsy (Loring, Meador, & Lee, 2004), and cognitive impairment is one of the most frequently identified factors in reducing the overall QOL (Bishop & Allen, 2003; Leidy et al., 1999).

As awareness of these problems has increased, it has become evident that management of epilepsy with AEDs and neurosurgery is insufficient, and comprehensive care that includes behavioral interventions is necessary. Yet, while the literature on the medical management of epilepsy is extensive, there remains a paucity of psychotherapeutic and cognitive remediation approaches that have been validated empirically for use in the comprehensive management of PWE. Available research in this area is complicated by methodological pitfalls, such as small sample sizes, sample selection bias, absence of adequate control group and randomization procedures, and controversies as to measures of outcome. Despite these limitations, there is evidence to suggest that behavioral interventions can reduce emotional distress and cognitive morbidity, increase treatment compliance, and possibly reduce seizure frequency and severity. By targeting the psychological and cognitive symptoms of PWE, effective behavioral interventions also have the potential to increase patients’ independence, reduce epilepsy-related disability and the associated costs, as well as enhance patients’ overall QOL.

The purpose of this chapter is to (1) briefly discuss prevalent emotional and cognitive problems associated with epilepsy, (2) summarize evidence-based strategies and guidelines offered for interventions in other patient groups (e.g., TBI, stroke), (3) review the limited empirical information available from behavioral intervention studies in epilepsy, and (4) provide guidance to neuropsychologists who are looking to design and implement psychotherapeutic and cognitive remediation treatments for PWE.


Psychotherapeutic Interventions



Emotional Distress and Psychosocial Factors in Patients with Epilepsy


In management of epilepsy, it is important to consider the high rates of emotional distress and psychosocial problems, which negatively impact patients’ ability to cope with disease and their QOL. The lifetime prevalence of depression and anxiety disorders is significantly higher in PWE than in the general public or in patients with several other chronic conditions, such as asthma (Ettinger, Reed, Cramer, & Epilepsy Impact Project Group, 2004; Kanner, 2007). Depression is the most common emotional concern in epilepsy, with the rates of depression reported to be as high as 55 % among patients treated in specialized medical centers (Dodrill, 2008). The level of depression is not usually well accounted for by seizure variables, suggesting that psychological, social, and medication variables play a significant part in this relationship (Bishop & Allen, 2007). It has been shown that depression but not seizure frequency predicts QOL in treatment resistant epilepsy, and this has led many investigators to conclude that treatment of depression may be inadequately prioritized in the epilepsy management in these patients (e.g., Boylan et al., 2004; Thapar, Kerr, & Gordon, 2009).

Anxiety disorders are also commonly comorbid with epilepsy, with reported prevalence rates ranging from 19 % to over 50 % across studies and the different settings where epilepsy patients were assessed (Beyenburg, Mitchell, Schmidt, Elger, & Reuber, 2005). The unpredictable timing and intrusive nature of seizures demand constant vigilance and often result in chronic and disabling anxiety, which can have a profound influence on the QOL of epilepsy patients. Seizure frequency has been linked to anxiety in some but not all studies. In older adults, including those with infrequent seizures (i.e., less than one per year), the fear induced by the possibility of a seizure may be sufficient to significantly reduce QOL (McLaughlin, Pachana, & Mcfarland, 2008).

The level of distress in PWE is also increased by cognitive problems, and distress in turn exacerbates cognitive dysfunction. At the same time, distressed patients are more prone to overreactions to memory failures, some of which may be normal forgetfulness. It has been shown that perceived cognitive functioning was strongly correlated with mood and weakly correlated with memory performance scores (Elixhauser, Kline Leidy, Meador, Means, & Willian, 1999).

Living with epilepsy also implies psychosocial challenges. Psychosocial functioning in PWE has to do with the level of effectiveness with which individuals are able to function in their social environment, including situations pertaining to education, employment, interpersonal relationships, as well as relationships with their physicians, adjustment to seizures, and medical management of epilepsy. For instance, psychosocial factors that have been implicated in the high unemployment rate among PWE include social isolation, lack of information, social skills deficits, and lack of family support (Bishop & Allen, 2007). Some of the psychosocial problems may be related to the perceived social stigma associated with epilepsy. In fact, epilepsy in many cultures has often been regarded as one of the most stigmatizing conditions. The negative attitudes that PWE encounter typically result from lack of information and understanding of epilepsy; however, feeling stigmatized does not always correlate with the presence of prejudice but relies heavily on individuals’ perceptions. Stigma can be one of the most distressing consequences of having seizures, and it can lead to social isolation and have a negative impact on QOL (Prus, Nakhutina, & Grant, 2009). Perceptions of lower self-efficacy to manage epilepsy and poorer adherence to treatment were found in PWE who report higher levels of stigma (DiIorio, Osborne Shafer, Letz, et al., 2003), and lower levels of stigma were associated with finding and maintaining employment (Smeets et al., 2007). Smith et al. (2009) found complex interactions between demographic, clinical, and psychosocial factors at play with the perception of stigma and suggested that perceptions of self-efficacy in managing epilepsy are a point of intervention to improve stigma.

Compounding the emotional and psychosocial problems is the fact that epilepsy patients often have inadequate knowledge and misconceptions about their illness and its treatment. They may also possess poor understanding of the cognitive and emotional problems they may be experiencing and the way these problems may be impacting their daily lives. Lack of information and erroneous beliefs can result in dangerous consequences of AEDs misuse, with resultant increase in seizure frequency, misguided medication changes or emergency room visits, as well as heightened perceptions of stigma, social withdrawal, and depression.

To address emotional distress, psychosocial problems, and lack of disease-related information among PWE, a number of educational and psychotherapeutic interventions have been developed. These interventions have been provided by various types of professionals, including specialist epilepsy nurses, social workers, health psychologists, and only infrequently neuropsychologists. Infrequent participation of neuropsychologists is surprising given the need for understanding of cognitive deficits in PWE when attempting to effect behavior change in these patients and to teach them new information. In the next section, empirical evidence from psychoeducational and psychotherapeutic programs for PWE will be reviewed. It should be noted that differentiation among these interventions is difficult to make, as there is usually much overlap, whereby psychotherapy commonly includes patient education and psychoeducational programs often instruct patients in coping skills.


Psychoeducational Programs


The focus of psychoeducation has been to impart knowledge about epilepsy and its treatment, improve coping skills and QOL, and increase compliance with treatment and seizure control. The educational programs have varied in their approach, and only a few have been evaluated using randomized, controlled methodology (May & Pfafflin, 2005). The results of studies conducted thus far are promising, and the need for educational interventions has been highlighted (Bradley & Lindsay, 2008).


Programs Targeting Epilepsy-Related Knowledge and Attitudes


Reviews by the Cochrane group (Bradley & Lindsay, 2008; Shaw et al., 2007) identified only two randomized controlled studies, evaluating programs that have targeted epilepsy-related knowledge and attitudes (Helgeson, Mittan, Tan, & Chayasirisobhon, 1990; May & Pfafflin, 2002). Seizures and Epilepsy Education (SEE; Helgeson et al., 1990) is a 2-day psychoeducational intervention for adults with epilepsy aimed at improving understanding of epilepsy and viewed essential to effective coping with the disease and related disability. The program covers the medical aspects of epilepsy, placing an emphasis on improving medication adherence, as well as on the social and emotional aspects of the disease. Helgeson et al. (1990) found that, in comparison to the wait-list control group (n = 18), the treatment group (n = 20) demonstrated significant improvements in disease-related knowledge and reduction in epilepsy-related fears (e.g., fear that a single seizure will lead to brain damage or death). They also demonstrated improvement in compliance with medication regimens, as measured by drug serum levels. However, there were no significant changes in anxiety, depression, QOL, self-efficacy, or seizure frequency.

Modular Service Package Epilepsy (MOSES; Reid, Specht, Thornbecke, Goecke, & Wohlfarth, 2001) is designed for group education and aims to engage patients in an active role in managing their disability and become experts in dealing with epilepsy. The program consists of multiple modules with goals of improving individual participants’ understanding of epilepsy, its treatment, and its psychosocial consequences and, thus, increasing their self-confidence, teaching them to cope with the disease, and enabling them to become more autonomous. May and Pfafflin (2002) investigated the efficacy of MOSES, given as a 2-day course, in a randomized controlled study. The findings indicated that the program was particularly effective in providing information and self-management strategies. Patients in the treatment group (n = 113) reported reduction in seizure frequency and better tolerability of AED treatment. The program did not have a significant impact on QOL, epilepsy-related fears, or emotional disturbances, such as depression.


Programs Aimed at Increasing Medication Compliance


Despite the recognized importance of treatment adherence in determining health and disability outcomes in PWE, research on interventions aimed specifically at improving adherence in these patients has been lacking (Bradley & Lindsay, 2008). The one existing randomized controlled trial (RCT) showed that a brief intervention focusing on patient education about the importance of compliance and training in behavioral strategies (e.g., medication container, prescription refill reminder cards sent by mail) can be effective in improving medication adherence and self-reported seizure control (Petersen, McLean, & Millingen, 1984). These results are encouraging; however, the research in this area unfortunately has not progressed much beyond this study, and a handful of additional interventions conducted since had many methodological limitations. Recently, DiIorio and colleagues have published descriptions of two interventions, one telephone based and one web based, that are under investigation in RCTs (DiIorio et al., 2009, DiIorio, Reisinger, Yeager, & McCarty, 2009). These nurse-delivered interventions focus on medication adherence strategies, information about epilepsy and seizures, and stress management. Based on constructs from social cognitive theory and motivational interviewing, these interventions focus on identifying and addressing barriers to adherence through a collaborative, confidence-enhancing approach.


Psychotherapy Approaches


Psychotherapeutic interventions include cognitive behavioral therapy, relaxation therapy, and EEG biofeedback, as well as patient education. These interventions have been used alone or in combination in treatment of epilepsy patients, with the aim of reducing depression and anxiety symptoms, decreasing seizure frequency, and improving QOL.


Cognitive Behavioral Therapy


A major focus of interventions that have applied cognitive behavioral therapy (CBT) to treatment of PWE has been on cognitive restructuring to improve patients’ coping and stress management skills in order to reduce depression and anxiety and enhance their overall QOL. Using CBT techniques, patients are taught to confront cognitive distortions, irrational beliefs, and negative thoughts related to epilepsy and self-perception. Another major application of CBT with epilepsy patients has been to teach self-management techniques for improvement of seizure control. These strategies have included observation of seizure triggers and initiation of countermeasures, such as breathing techniques or coping statements. The methods employed in CBT interventions for PWE have varied widely and have included treatment protocols of varying length, individual or group format, with different types of professionals administering treatment. While only a limited number of RCTs have been conducted, with mixed findings, possibly attributable to varying methodologies, they suggest that CBT can be a valuable approach in treatment of epilepsy patients.

In earlier studies, Davis, Armstrong, Donovan, & Temkin (1984) reported positive results from an RCT evaluating a 6-week treatment with 13 adults with epilepsy, designed to increase participants’ skills in managing depression. Cognitive behavioral techniques included maximizing pleasant events and physical exercise, increasing assertiveness, identifying faulty belief systems, and increasing positive cognitions and self-reinforcing statements. The treatment group was reported to evidence marked reduction in depression, as assessed by self-report measures. There was also a significant decrease in self-reported anxiety/stress and anger and increased involvement in social activities.

Subsequently, Au et al. (2003) evaluated effectiveness of cognitive behavioral intervention (eight 2-h sessions) focused particularly on cognitive restructuring and seizure control. The sessions were led by two clinical psychologists and included information about the relationship of stress and seizures, identification of seizure-provoking situations, cognitive restructuring, and training in relaxation and stress management techniques. The patients in the treatment group (eight adults) were reported to show significant gains in self-efficacy or the ability to manage seizures and stress, as was assessed by a modified Epilepsy Self-Efficacy Scale (ESES; DiIorio & Yeager, 2003) and in QOL (QOLIE-31; Cramer et al., 1998) when evaluated at 3-month follow-up. These changes were not observed in the wait-list control group (nine adults), and no significant reduction in seizure frequency was noted following treatment.

Goldstein, McAlpine, Deale, Toone, and Mellers (2003) reported positive results of CBT (12 sessions) led by a nurse specialist and designed to address epilepsy-related problems and the associated psychopathology. Treatment focused on decreasing psychiatric symptoms by assisting patients in adjustment and introducing countermeasures, such as coping statements, shifting attention, and deep breathing, to reduce seizures. Upon completion of treatment, patients rated their epilepsy-related problems as having less impact on their daily lives than previously. At 1-month follow-up, patients also reported decreased use of escape-avoidance coping strategies, as well as improved self-rated work and social adjustment. These results were observed despite the absence of a significant decrease in seizure frequency.

Cognitive behavioral techniques have also been used in attempts to prevent depression in those determined to be at risk for the development of depression. Martinovic, Simonovi, and Djoki (2006) randomized 30 adolescent patients with equivalent levels of depressive symptoms prior to treatment to receive either CBT or counseling as usual. Depressive symptoms improved in patients who received CBT, and patient QOL ratings correlated with mood improvement. In contrast, a few of the patients in the control group developed depression at follow-up.

Studies evaluating interventions that specifically targeted seizure frequency, severity, or duration have yielded mixed results. In a study by Tan and Bruni (1986), patients were randomized to CBT, supportive counseling, or wait-list control. The treatment did not result in significant reduction in seizure frequency. Moreover, improvements in psychosocial adjustment were observed in both therapy groups, and thus, no specific advantage of CBT was demonstrated. In contrast, Gillham (1990) reported an improvement in seizure control and psychological symptoms after individual CBT that involved monitoring of symptoms and initiation of countermeasures, such as breathing techniques. Spector, Tranah, Cull, and Goldstein (1999) reported positive efficacy results of a group intervention (8 weekly sessions) designed to improve seizure control in seven adult patients with intractable seizures. Treatment included psychoeducation and cognitive behavioral techniques. Seizure frequency was significantly reduced in intervention participants, and the treatment effects persisted at 2-month follow-up. However, no significant improvement in psychosocial functioning in these patients was observed. Finally, Lundren, Dahl, Melin, and Kies (2006) reported that a short-term acceptance and commitment therapy, combined with seizure behavior management techniques, had significant effects on seizure frequency, duration, and QOL, as compared to supportive therapy. Treatment was distributed in two individual and two group sessions during a 4-week period.

In summary, the evidence from a number of studies suggests that CBT may be effective in helping PWE manage depression and anxiety symptoms, improve their ability to control seizures, as well as improve their overall QOL. However, the validity of reported results is limited by methodological problems, including a small number of participants, lack appropriate control groups or randomization procedures, and insufficient information with regard to seizure type and concomitant antidepressant therapy (Ramaratnam, Baker, & Goldstein, 2008). While it is difficult to draw definitive conclusions about the efficacy of CBT in treatment of PWE in view of these methodological limitations, the evidence gathered thus far suggests that CBT may prove to be an effective method in addressing epilepsy-related emotional and psychosocial problems. Continued research evaluating this approach in epilepsy is needed.


Progressive Relaxation Training


It is widely accepted that stress is a common precipitant of seizures in PWE, and it has been inferred that behavioral approaches used to minimize stress would therefore improve seizure control. A number of studies have tested this hypothesis employing different relaxation training protocols and have reported positive results, although the mechanisms by which relaxation training appears to reduce seizure frequency are unclear. Dahl, Melin, and Lund (1987) found a significant advantage of relaxation therapy in decreasing seizure frequency in 18 adults treated over 6 weeks (1 h weekly), as compared to supportive therapy attention control or no treatment. The treatment effects were maintained at 10- and 30-week follow-up. Rousseau, Hermann, and Whitman (1985) reported that implementing progressive relaxation training over 3 weeks in eight adults with uncontrolled epilepsy resulted in 30 % reduction in median seizure frequency. Similarly, in a study examining the efficacy of progressive muscle relaxation (six sessions conducted over 4–8 weeks) in reducing seizure activity, Puskarich et al., 1992 found that the treatment resulted in 29 % reduction in mean seizure frequency, whereas there was only 3 % decrease for the control (i.e., quiet sitting) group. The effects of relaxation therapy on psychosocial functioning have also been investigated (Snyder, 1983); however, no significant difference in scores on the Washington Psychosocial Seizure Inventory (WPSI; Dodrill, Batzel, Queisser, & Temkin, 1980) were found between treatment and control groups after relaxation therapy, and no information regarding the seizure frequency was provided.

These studies indicate possible beneficial effects of relaxation training on seizure frequency; however, due to methodological deficiencies, including considerable difference in the seizure frequencies at baseline among patients in the control and treatment groups, definitive conclusions cannot be made, and further studies are needed (Ramaratnam et al., 2008).


Use of Biofeedback in Treatment of Epilepsy Patients


The biofeedback technique involves monitoring of physiological responses, such as heart rate, galvanic skin response (GSR), or brain wave pattern (EEG), and providing feedback to the individual to help him or her actively control the physiological response. The effects of biofeedback on seizure frequency have been explored in numerous studies, and there is a significant body of literature on EEG biofeedback (see review by Sterman, 1990). Ramaratnam et al. (2008) critically reviewed this literature and identified only one trial where randomized controlled procedures were employed (Lantz & Sherman, 1988). In this study, the authors investigated the effects of EEG biofeedback (6-week treatment) on 24 adults with uncontrolled epilepsy who were randomized to contingent EEG biofeedback, noncontingent feedback, and no intervention control. Significant seizure frequency reduction (61 %) following contingent EEG biofeedback at 6 weeks follow-up was reported (Lantz & Sherman, 1988).

Nagai, Goldstein, Fenwick, and Trimble (2004) studied the effects of GSR biofeedback training or sham feedback on seizure frequency in 18 adult patients with treatment resistant epilepsy in a single blind RCT. These investigators reported 50 % greater reduction in seizure frequency in the treatment group relative to patients in the control group.


Cognitive Remediation Approaches



Cognitive Deficits in Patients with Epilepsy


Epilepsy patients can present with cognitive deficits in various domains, including intellectual abilities, attention and concentration, memory, executive functions (e.g., organization, mental flexibility, problem-solving), language, visuospatial skills, processing and motor speed, as well as in social and emotional cognition. Memory impairment, attention and concentration deficits, and mental slowing are the most frequent cognitive problems associated with epilepsy (Aldenkamp, 2006; Jokeit & Ebner, 1999) and are commonly reported subjective complaints of PWE. Cognitive impairment in PWE appears to result from multiple factors, including the underlying etiology, neuronal dysfunction or loss, seizure-related variables, localization of the epileptogenic zone, adverse effects of antiepileptic drugs (AEDs), and comorbid psychiatric conditions, such as depression and anxiety (Aldenkamp, Baker, & Meador, 2004; Hermann & Whitman, 1984). These factors interrelate, resulting in heterogeneous nature of cognitive profiles that range widely in severity of deficits. Early seizure onset, long duration of the disease, and poor seizure control are associated with poor cognitive outcome (Elger, Helmstaedter, & Kurthen, 2004). While epilepsy surgery is an important treatment option allowing many patients to achieve seizure freedom, the surgical intervention carries the risk of causing additional cognitive impairments.

Patients often list memory problems as their greatest concern (Hendriks, 2001) with memory deficits, in varying degrees of severity, being the most common finding in objective neuropsychological evaluations. Seizures often originate in mesiotemporal structures that are essential for memory processes (Squire, Stark, & Clark, 2004), and NMDA receptors, critical in learning and memory, appear to play a prominent role in the neuropathology of epilepsy (Engel, Pedley, Aicardi, & Dichter, 2007). Learning and memory difficulties are the most frequent cognitive changes in patients with temporal lobe epilepsy (TLE), irrespective of the presence of overt damage in temporal lobe structures (Giovagnoli & Avanzini, 1999). Frontal lobe epilepsy (FLE) may affect an array of cognitive abilities, including memory, attention, and executive functions (Helmstaedter, Kemper, & Elger, 1996). The overall prevalence of memory problems in patients with refractory epilepsy has been estimated as high as 20–50 % (Halgren et al., 1991).

Deficits in cognitive functions are considered more debilitating than the actual seizures by some patients. Cognitive functioning may be a significant factor in determining educational attainment and employment status, and even subtle deficits may manifest themselves in demanding professional or academic settings. Cognitive deficits are also likely to negatively impact patients’ ability to adhere to their treatment regimens, especially when the regimens are complex and, thus, reliant on many cognitive abilities. In a study focused on medication adherence, study, 56 % of epilepsy patients reported forgetfulness as a reason for poor medication adherence, and the overall nonadherence rate was 68 % (Nakhutina, Gonzalez, Prus, & Grant, 2009). Finally, cognitive dysfunction is also one of the most frequently identified factors in reducing QOL (Bishop & Allen, 2003), even in patients with well-controlled epilepsy. In particular, individuals with impaired memory were found to have significantly worse QOL than the ones with unimpaired memory (Leidy et al., 1999).

Evidence-based cognitive remediation has the potential to improve cognitive status, functional abilities, and QOL in PWE. The interest in the possibility of rehabilitation of cognitive problems has greatly expanded in the last decades, and there is now a considerable amount of literature on cognitive rehabilitation (e.g., Sohlberg & Mateer, 2001; Wilson, 1987); however, the focus of this literature remains primarily on traumatic brain injury (TBI) and stroke, whereas applications to epilepsy patients have been very limited (Shulman & Barr, 2002). The attempts to investigate the efficacy of cognitive rehabilitation in PWE with adequate study of outcomes have been very few, and RCTs are grossly lacking. In the following section, (1) definition of cognitive remediation will be provided, (2) select remediation strategies with supportive evidence for use with brain injury and stroke patients will be summarized, and (3) limited empirical evidence from studies of cognitive interventions in PWE will be reviewed. The focus will be on rehabilitation of memory and attention problems, the most prevalent complaints in PWE and key domains targeted by existing remediation interventions in epilepsy patients.


Cognitive Rehabilitation: Definition


Cognitive rehabilitation has been defined as a “systematic, functionally oriented service of therapeutic activities that is based on assessment and understanding of the patient’s brain-behavioral deficits” (Cicerone et al., 2000). Wilson has defined cognitive rehabilitation as “any intervention strategy or technique which intends to enable clients or patients, and their families, to live with, manage, by-pass, reduce or come to terms with cognitive deficits precipitated by injury to the brain” (Wilson, 1997). A comprehensive neuropsychological evaluation plays an important role in guiding cognitive remediation based on detailed information about patients’ level of intellectual functioning, cognitive profile (e.g., areas of cognitive deficits and preserved abilities), and severity of cognitive impairment. Cognitive remediation is also guided by patients’ functional goals or what is expected of them (e.g., return to work or school, participation at home).


Rehabilitation of Memory


Memory rehabilitation is a component of cognitive rehabilitation. Two broad approaches to memory rehabilitation have been employed: (1) restitution training and (2) strategy training. Using the restitution training approach, memory rehabilitation programs rely heavily on repetitive drills and practice of cognitive skills in attempts to restore the underlying impaired function. Tasks utilized for this purpose are often computerized, and software packages have been made commercially available. This approach has not been found to lead to general improvements in memory functioning (Prigatano et al., 1984). The strategy training approach to rehabilitation has received more research support, especially when targeting memory problems (Cicerone et al., 2000, 2005). This approach focuses on teaching patients compensatory strategies to circumvent difficulties that arise as a result of their memory impairment (Sohlberg & Mateer, 1989). Patients are taught the use of internal memory aids, such as mnemonics, visual imagery, and rehearsal, to help them remember and recall information and/or external memory aids, such as notebooks, voice organizers (Van den Broek, Downes, Johnson, Dayus, & Hilton, 2000), alarms, pagers (Wilson, Emslie, & Evans, 2001), mobile phones (Wade & Troy, 2001), and other assistive devices and environmental manipula-tions, to help reduce memory failures and executive functioning problems. The generalizability of internal memory aid use to natural settings has also been questioned. These techniques have been found ineffective for many patients with significantly compromised intellectual functioning and may be useful only for acquisition of specific and small bodies of information (Sohlberg & Mateer, 1989). The external memory aids can be very effective, particularly when dealing with severe memory impairment; however, these aids are often given with minimal instruction or formal training (Sohlberg & Mateer, 1989).

Cicerone and colleagues (2000) provided evidence-based recommendations for cognitive rehabilitation with TBI and stroke patients. Based on the review of findings from well-designed prospective RCTs, along with supportive evidence from less rigorous trials, Cicerone et al. (2005) suggested that the evidence for memory strategy training (including the use of internalized strategies and external memory compensations) for individuals with mild memory problems was “compelling enough” to recommend it as a practice standard. Teaching external memory aids with direct application to functional activities was offered as practice guidelines for patients with moderate to severe memory impairment, based on evidence of probable effectiveness (e.g., as seen in nonrandomized cohort studies or case-control studies).


Remediation of Mild to Moderate Memory Deficits


Johanson, Chaplin, and Wedlund (2001) conducted memory training for PWE as part of a holistic neurorehabilitation program that integrated psychotherapy and aimed at addressing poor self-image and education about epilepsy and brain functioning. Twenty-one participants, in groups of five, attended 16-day treatment over a period of 8 weeks. Memory training with participants focused on increasing understanding of memory functioning and on teaching strategies (e.g., diary) for improving memory, while targeting their individual cognitive problems, as identified by the neuropsychological evaluation. A few meetings were also conducted with a parallel group of participants’ significant others. The results included improvements in the overall QOL, as assessed by QOLIE-89 (Devinsky et al., 1995), administered prior to enrollment, immediately after completion of the program and at 6 months posttreatment. Qualitative assessments of treatment outcome revealed improved understanding and control of memory problems (as reported by 10 of 21 participants), increased knowledge about epilepsy, and improved self-confidence. Although patients derived benefit from the holistic approach, their feedback also indicated that the time devoted to memory training was insufficient for participants whose memory problems were more severe.

Barr, Morrison, Isaacs, and Devinsky (2004) developed and evaluated a group-based intervention focused specifically on treatment of memory difficulties in PWE. Twenty-three patients were enrolled in treatment, consisting of six 75-min-long sessions led by two neuropsychologists. Sixteen patients had previously received surgical intervention. Each session included educational presentations about epilepsy and memory, followed by instruction in the use of memory aids (e.g., calendar, electronic organizers, pagers) and mnemonic techniques (e.g., imagery and association). Participants shared personal experiences and strategies they found helpful for managing memory problems. They were provided with informational handouts and given homework assignments utilizing concepts introduced in the group. The treatment outcome was assessed by self-report inventories (i.e., QOLIE-10, Cramer, Perrine, Devinsky, & Meador, 1996; modified Memory Complaints Inventory or MCI; Green & Allen, 1997), given at baseline and at 1–2-month follow-up. While no significant changes in global ratings of QOL were observed, patient responses suggested improvements in subjective ratings of verbal memory and word finding. Patients also reported an increase in medication side effects which, as the authors suggested, may have been due to increased awareness of these issues through educational presentations.

Ponds and Hendriks (2006) described a treatment program also focused on memory rehabilitation, reporting positive results. Participants were epilepsy patients with objectively defined memory deficits, as determined by the diagnostic neuropsychological assessment. Everyday memory problems were assessed with questionnaires completed by patients and their significant others, who were also asked to monitor patients’ memory problems on a daily basis for 2 weeks. Information gleaned from these assessments resulted in a list of ten concrete memory problems, formulated as individual treatment goals. In six to eight sessions, scheduled every 2 weeks, patients learned compensatory strategies for their personally formulated treatment goals. Rather than prescribing strategies, participants were encouraged to choose strategies for the memory problems they were experiencing, apply them to everyday life situations, and discuss in group their experience using these strategies. Participants were also provided with information about epilepsy and memory functioning. Three months after finishing treatment, participants returned for “brush-up” session and a neuropsychological reevaluation to measure treatment effects. The authors reported positive results of this treatment approach, as assessed with subjective rating scales completed by 21 patients and their relatives. The participants reported being more acquainted with strategies to support memory problems and better ability to cope with memory problems in their daily lives. In addition, significant improvements were observed on verbal memory tasks (Hendriks, 2001; Ponds & Hendriks, 2006).

The question has been raised by some investigators whether postsurgical memory decline can be counteracted with a cognitive intervention. In a study investigating the effectiveness of visual imagery as a mnemonic technique in aiding the recall of verbal information in patients after unilateral temporal lobectomy (TL) for treatment of refractory epilepsy, Jones (1974) showed that on a paired-associate learning task, patients with left TL could partially compensate for their verbal memory deficits by using visual imagery, and thus improve their recall. In contrast, patients with amnestic syndromes (resulting from bilateral damage to the mesial temporal structures) derived no benefit from this strategy, and patients with right TL performed similarly to normal controls.

The effects of cognitive remediation on memory outcome after temporal lobe epilepsy (TLE) surgery were also evaluated by Helmstaedter et al. (2008). Patients began treatment 3–15 days after surgery, and the average duration of treatment was 29.3 days. The intervention aimed to strengthen compensation strategies for coping with cognitive impairment and involved repeated practice of computer-based exercises for attention, memory, and executive functioning, with difficulty level adjusted to each patient. The software employed was intended for general use with individuals with compromised brain functioning. The intervention was conceptualized as holistic and included psychoeducation into the effects of brain functioning, cognitive deficits, impact of personality and emotional reactions, as well as individual counseling and occupational and physical therapy. Baseline and outcome assessments included attention measures (letter cancellation) and tests of verbal and figural memory.

Helmstaedter et al. (2008) reported that left TL patients profited less from the rehabilitation than those post-right TL patients. Figural memory was not affected by the rehabilitation, and attention improved independent of treatment. The authors concluded that rehabilitation can counteract the verbal memory decline after temporal lobe resection, particularly in right TL patients with verbal memory problems. However, these results should be interpreted with caution due to methodological limitations, given that there was no randomization, with patients from another center serving as a control group. In addition, strategies similar to those covered in cognitive rehabilitation were also taught in occupational therapy, making it difficult to tease out the independent effects of the cognitive intervention. Finally, it is unclear whether the benefits of the intervention generalized, as the effects on everyday functioning and on daily living were not investigated.

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Sep 24, 2016 | Posted by in NEUROLOGY | Comments Off on Psychotherapeutic and Cognitive Remediation Approaches

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