pure absence

English Thesaurus

1. an absence seizure without other complications; followed by 3-per-sec brainwave spikes (noun.state)

hypernym	:	absence, absence seizure,
definition	:	the occurrence of an abrupt, transient loss or impairment of consciousness (which is not subsequently remembered), sometimes with light twitching, fluttering eyelids, etc.; common in petit mal epilepsy (noun.state)