Magnetoencephalography
The term magnetoencephalography (MEG) refers to the recording of the magnetic field of electrocerebral activity. MEG uses specialized equipment and lends itself to source localization using dipole methods and co-registration…
NEUROLOGY
Neonatal and Pediatric Electroencephalography
The electroencephalogram (EEG) is an important tool in the evaluation of an infant or child with symptoms referable to the central nervous system (CNS). EEGs are used to assess seizure…
Electroencephalography: General Principles and Clinical Applications
The electroencephalogram (EEG) represents the electrical activity of the brain as recorded from electrodes placed on the scalp. Many clinical neurologists and neurosurgeons do not fully appreciate the potential value…
Electrophysiologic Equipment and Electrical Safety
The development and refinement of instrumentation has been a great asset in the diagnosis of neurologic diseases. With advances in instrumentation, however, physiologists are in danger of making more technologically…
The Emergence of Electrophysiology as an Aid to Neurology
From the time of the ancients to well into the eighteenth century, electricity was regarded as a strange, invisible power. It was differentiated from magnetism in 1600 by Gilbert, but…
Connective Tissue Diseases, Vasculitis, and the Nervous System
Keywords systemtic lupus erythematosus, Sjögren syndrome, rheumatoid arthritis, systemic sclerosis, vasculitis, temporal arteritis, Takayasu arteritis, Behçet syndrome The diseases discussed in this chapter are linked by their inflammatory mechanisms…
Care at the End of Life
Keywords amyotrophic lateral sclerosis, de-efferented state, dementia, end-of-life care, minimally conscious state, persistent vegetative state With the advent of increasingly sophisticated technology and more powerful pharmacologic agents, it has…
Dementia and Systemic Disease
Keywords dementia, Alzheimer disease, Parkinson disease, dysphagia, aspiration, delirium, falls, sleep Dementia is a common problem among the elderly and is associated with a number of important systemic complications….
Seizures and General Medical Disorders
Keywords Seizures, epilepsy, uremia, hepatic failure, critical illness, porphyria, transplant recipients, connective tissue diseases, HIV infection, diabetes, hypoglycemia, thyroid disease, sodium, magnesium, alcohol, cocaine, medication-induced seizures, trauma Seizures commonly…
Disorders of Consciousness in Systemic Diseases
Keywords consciousness, coma, metabolic encephalopathy, brain death, vegetative state, minimally conscious state Consciousness is a complex and elusive concept that has been the subject of extensive thought and speculation…
