Abstract
Experiment I measured reaction time (RT) to monaural tones of six frequencies presented along with white noise to the contralateral ear. RT with the hand ipsilateral to the stimulus was an average of 9.63 msec faster than RT with the contralateral hand. Contralateral RT was significantly affected by the stimulus frequency. Experiment II measured ipsilateral and contralateral RT to monaural tones with and without contralateral noise. Noise-on results agreed with the results of Experiment I, while noise-off results showed no difference between ipsilateral and contralateral RT. No right-ear advantage was found. The ipsilateral-contralateral RT difference found with noise on is interpreted as being due to callosal transmission time as well as other factors. The finding of no right-ear advantage is discussed in relation to other studies which did report a right-ear advantage.
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Darwin, C. J.Dichotic forward and backward masking of speech and non-speech sounds. Paper presented to the Acoustical Society of America, Washington, D.C., April 1971.
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This report is based on a thesis directed by Sachio Ashida and submitted in partial fulfillment of the requirements for the MA degree at the State University of New York, College at Brockport. The author is presently at the University of Connecticut.
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Aitken, P.G. The effects of contralateral noise on reaction time to monaural stimuli. Perception & Psychophysics 19, 206–210 (1976). https://doi.org/10.3758/BF03204228
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DOI: https://doi.org/10.3758/BF03204228