Effect of brightness of simultaneous visual stimulation on absolute auditory sensitivity.

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Abstract
Auditory thresholds were measured under 8 conditions of a simultaneous visual stimulus with Ss in 2 experimental groups each under different instructions about the light being present and the requirement to report on it. Analysis of variance indicates that auditory acuity varies with change in the light intensity accompanying presentations of the tone, and that auditory sensitivity is differentially affected by light intensity as a function of the instructions and treatment of the Ss in the different groups.