deep sleep

the stage of the sleep cycle in which arousal thresholds are highest and consciousness is taken to be least likely. In electroencephalography, deep sleep is commonly defined by a predominance of slow, high-amplitude waveforms. See delta wave; slow-wave sleep.

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Psychology term of the day

January 30th 2025

mammillothalamic tract

the tract that connects the mammillary bodies to the thalamus at the base of the brain.