Temporal intermittent rhythmic theta activity (TIRTA): A marker of epileptogenicity?

ABSTRACT:

Objective

To describe a novel EEG rhythm, temporal intermittent rhythmic theta activity (TIRTA), and its potential association with epilepsy.

Methods

We report TIRTA on scalp EEG in a series of 12 patients, all of whom were found to have epilepsy. The clinical and electroencephalographic characteristics of each patient were reviewed. In addition, features that may distinguish TIRTA from benign EEG patterns, including rhythmic temporal theta bursts of drowsiness (RTTBD), were identified.

Results

TIRTA was unilateral in all cases. For all patients, TIRTA was seen in the awake and drowsy states. Eight patients also had TIRTA observed during N2 sleep. The average frequency of TIRTA was 5.5 Hz and the average duration of a train of TIRTA was 5.25 s. In seven cases the morp

SUBMITTER: Fox J 

PROVIDER: S-EPMC9638731 | biostudies-literature | 2022 Dec

REPOSITORIES: biostudies-literature