BETS: benign epileptiform transients of sleep
aka SSS: small sharp spikes
FOR A LARGER IMAGE:
- occur in stage 1 or 2 NREM sleep.
- usually monophasic, occasionally diphasic.
- temporal with broad field of distribution
- There is typically no disturbance of the background, although there is sometimes a single aftergoing slow wave.
- typically less than 50 mV, less than 50 msec