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Science 24 September 1971:
Vol. 173. no. 4003, pp. 1248 - 1251
DOI: 10.1126/science.173.4003.1248
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Articles

Auditory Evoked Potentials during Speech Perception

Charles C. Wood 1, William R. Goff 1, and Ruth S. Day 2

1 Neuropsychology Laboratory, Veterans Administration Hospital, West Haven, Connecticut 06516, and Departments of Psychology and Neurology, Yale University, New Haven, Connecticut
2 Haskins Laboratories, New Haven, Connecticut, and Department of Psychology, Yale University

Neural responses evoked by the same binaural speech signal were recorded from ten right-handed subjects during two auditory identification tasks. One task required analysis of acoustic parameters important for making a linguistic distinction, while the other task required analysis of an acoustic parameter which provides no linguistic information at the phoneme level. In the time interval between stimulus onset and the subjects' identification responses, evoked potentials from the two tasks were significantly different over the left hemisphere but identical over the right hemisphere. These results indicate that different neural events occur in the left hemisphere during analysis of linguistic versus nonlinguistic parameters of the same acoustic signal.


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