K complex

a brief, high-amplitude spike-and-rebound waveform recorded in the scalp electroencephalograph during sleep onset. K complexes and sleep spindles occur normally during Stage 2 NREM sleep (see sleep stages). It is postulated that they may suppress sleep disruptions and coordinate memory consolidation. K complexes can also be involved in nocturnal seizures.

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Psychology term of the day

December 22nd 2024

eclectic counseling

any counseling theory or practice that incorporates and combines doctrines, findings, and techniques selected from diverse theoretical systems.