Time constants of acoustic adaptation.
Evoked potentials were recorded from cochlear nuclei of intact, awake cats through chronically implanted electrodes during stimulation with 10,000 c/sec at 35 dB above the visual detection threshold of evoked potentials. The stimulus rate was varied from 0.5 to 100/sec and the stimulus duration was varied from 1 to 1800 msec but no overlap occurred between successive stimuli. A model was proposed to explain the amplitude of evoked potentials as a function of the stimulus duration and repetition rate. The time constant for the exponential decrease of evoked potential amplitude during stimulation is 8.9 msec, whereas the time constant for the exponential recovery of evoked potentials following the cessation of the tone is 39.5 msec.
D000161:Acoustic Stimulation; D000222:Adaptation, Physiological; D000818:Animals; D002415:Cats; D005072:Evoked Potentials, Auditory; D008959:Models, Neurological; D013997:Time Factors