Conditions Of Auditory Stimulation Research Articles

The influence of early auditory experience on later auditory and tactual variation seeking in the rat.

Albino rats were raised under 1 of 4 conditions of auditory stimulation from 22-35 days of age. At 40 days, preferences for auditory and tactual variation were assessed in separate runway tests. Results were analyzed in a split-plot design for each of 2 measures of variation seeking. Subjects experiencing more-variable early stimulation scored higher than subjects receiving less-variable stimulation on 1 measure of variation-seeking and lower on the 2nd measure. The effect was intermodal since these results were obtained for tactual as well as auditory variation seeking.

Hemispheric amplitude asymmetries in the auditory evoked potential with monaural and binaural stimulation

The present experiment examined auditory evoked potentials (AEPs) under three conditions of auditory stimulation: left ear, right ear, and the two ears simultaneously. It was hypothesized that the white-noise stimulus would result in higher amplitude AEPs in the contralateral hemisphere as compared to the ipsilateral. This was confirmed. There were no latency differences in AEPs recorded from over ipsilateral and contralateral hemispheres. The results obtained appear to provide further evidence for the predominance of the contralateral pathways of the auditory system.