Pontogeniculo-occipital spike is characteristic of which of the following sleep stage?
Stage 1 NREM
Stage 2 NREM
Stage 3 NREM
REM
Ponto - geniculo - occipital spikes are large phasic potentials, seen in REM sleep. These orginate from cholinergic neurons in pons and pass rapidly to lateral geniculate body and then to occipital coex.
Sleep Disorders