This review discusses a variety of causes of stupor and @entity772 and associated electroencephalographic (EEG) findings. These include metabolic disturbances such as @entity8 , which are often characterized by slowing of background rhythms and triphasic waves. @entity519 and drug intoxications can produce a number of abnormal EEG patterns such as burst suppression, alpha @entity772 , and spindle @entity772 . Structural lesions, either supra- or infratentorial, are reviewed. EEGs in the former may show focal disturbances such as delta and theta activity, @entity302 , and attenuation of faster frequencies. In infratentorial lesions, the EEG may appear normal, particularly with a pontine lesion. Some @entity1 may be encephalopathic because of ongoing @entity302 activity with minimal or no motor movements. This entity, @entity159 ( @entity159 ), is difficult to diagnose in obtunded/ @entity772 @entity1 , and an EEG is required to verify the diagnosis and to monitor treatment. Several EEG patterns and their interpretation in suspected cases of @entity159 such as periodic lateralized @entity302 (PLEDs), bilateral independent periodic lateralized @entity302 (BIPLEDs), generalized periodic @entity302 (GPEDs), and triphasic waves are reviewed. Other entities discussed include the @entity1688 , @entity204 , persistent vegetative state, @entity204 , and @entity1620 .

The interpretation of the EEG in stupor and XXXX .

@entity1 :: ('9606', 'Species') :: ['patients'] @entity1688 :: ('MESH:D011782', 'Disease') :: ['locked-in syndrome'] @entity8 :: ('MESH:D007674', 'Disease') :: ['hepatic or renal dysfunction'] @entity772 :: ('MESH:D003128', 'Disease') :: ['coma', 'comatose'] @entity519 :: ('MESH:D000860', 'Disease') :: ['Hypoxia'] @entity1620 :: ('MESH:D001926', 'Disease') :: ['brain death'] @entity302 :: ('MESH:D004827', 'Disease') :: ['epileptic', 'epileptiform discharges', 'epileptiform abnormalities'] @entity204 :: ('MESH:D003643', 'Disease') :: ['neocortical death', 'brainstem death'] @entity159 :: ('MESH:D013226', 'Disease') :: ['nonconvulsive status epilepticus', 'NCSE']
@entity772 :: (MESH:D003128,Disease) :: ['coma']
