Benign Epileptiform Transients of Sleep (BETS)

a.k.a. Small Sharp Spikes (SSS)

Annotations:
Resize image:


Montage: unspecified

appearance

  • 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 microvolts, less than 50 milliseconds


clinical significance

normal variant