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What is Bruxism is seen in ? and explain in detail?
Ans. is 'b' i.e., NREM stage 3, 4 Slow wave sleep (stage 3 & 4 of NREM sleep) disorders :- Sleep walking (somnambulism), night terror (sleep terror or pavornocturnus), Nocturnal enuresis, Bruxism (teeth grinding), and sleep talking (somniloquy). REM sleep events/disorder :- Nightmares, nocturnal penile tumescence, Narcolepsy.