Background

The background EEG is normal in approximately 60% of patients, mild focal slowing may be seen in remaining cases.

Interictal

In around a third of patients, infrequent sharp-waves are seen in the temporal region, usually unilaterally.

Activation

EEG abnormality is enhanced by sleep deprivation, in drowsiness and in sleep.

Ictal

There are inadequate published records of ictal EEG in this syndrome.