Auditory signal detection and decision processes in the nervous system.

Abstract
Neuronal unit activity was recorded from auditory nuclei, the dorsal hippocampus and the cerebellum in rabbits behaviorally detecting a threshold-level constant intensity white noise stimulus. Stimulus-evoked neuronal unit activity was present and identical on both detection and nondetection trials in auditory nuclei but was dichotomous in the hippocampus and in the cerebellum, the latter 2 systems predicting the occurrence of behavioral detection. The behavioral absolute auditory threshold is apparently not determined by differential activation of neurons in the primary auditory relay nuclei.

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