Epilepsy Surgery Assessment and Testing
Fig. 25.1 Right anterior temporal spikes Fig. 25.2 High-resolution MRI detects mesial temporal sclerosis (MTS) in 80–90% of cases Her presurgical evaluation indicated that she was a good candidate for a right…
NEUROLOGY
Neonatal EEG and Neonatal Seizures
Fig. 4.1 Neonatal montage. Special montage—preterm or newborn with head circumference <35 cm Usually, 16 channels recording are done, which should include 2 or more non-cerebral channels. Non-cerebral electrodes include EKG, EMG, ocular,…
EEG in Encephalopathy and Coma
Fig. 9.1 Triphasic waves in an encephalopathic patient. Notice the anterior-to-posterior lag in the second (positive) component of the triphasic wave (boxed) Fig. 9.2 Notice the posterior-to-anterior lag in the second (positive)…
Physiologic Basis of EEG and Epilepsy
Ion Intracellular (mM) Extracellular (mM) Equilibrium potential (mV) Potassium (K*) 140–150 5 –90 Sodium (Na*) 5–15 145 +60 Chloride (Cl) 4–30 110–125 –70 Synaptic transmission is the major mode of…
Ictal and Interictal EEG
Fig. 5.1 Two spikes (arrowheads) from the same patient who had undergone right frontotemporal resection preserving the hippocampus for intractable epilepsy without resolution of seizures. The first spike is positive over…
Epilepsy Secondary to Specific Mechanisms
Antibody/target Symptoms (other than seizures/limbic encephalitis) Associated cancer(s) VGKC complexa Personality or behavioral changes, myoclonus (CJD-like picture), neuropathy, and hyponatremia SCLC, thymoma NMDA receptor Psychosis, extrapyramidal disorders (e.g., choreoathetosis), and dysautonomia…
Vagus Nerve Stimulation and Other Neuromodulation
1985 First animal studies 1988 First human implant 1992 First randomized active control study (E03) completed 1994 European community approval 1996 Second randomized active control study (E05) completed 1997 US…
Magnetoencephalography and Magnetic Source Modeling
Fig. 23.1 Dipolar sources of epileptic spikes. The panels above show an example of dipolar source models of epileptic spike activity. The panel on the far left shows MEG traces from…
Backmatter
7. Which of the following is true about the following EEG? A. It suggests a seizure focus in the left inferior parietal region B. It is consistent with…
Principles of Epilepsy Diagnosis and Management
Recurrence rate (%) After first unprovoked seizure 40 After two unprovoked seizures 73 After three unprovoked seizures 76 After treating first unprovoked seizure 15 Table 15.2 Risk of seizure recurrence…
