Summated potentials evoked by speech sounds for determining cerebral dominance for language

Electroencephalography and Clinical Neurophysiology
J D GrabowK L Greene

Abstract

Ten normal adult right-handed subjects receive phonemic combinations (/epik/, /epak/, /a/, /pi/, /pa/) and pure tones (2500 and 8000 Hz) binaurally through matched earphones. Fifty responses from electrodes at P5, P6, C5, C6, F7 and F8 (referenced to linked mastoids) were summated, and evoked potentials from homologous areas were measured separately and superimposed in order to observe differences. Visual inspection of superimposed responses showed no consistent gross asymmetries that lateralized to either hemisphere. Comparison between amplitude of evoked potentials (N1, P2) at P5 and P6 were not significant (P < 0.05; paired t test). We suggest that our technique may not be a useful clinical test for cerebral dominance.

References

Jan 1, 1975·Electroencephalography and Clinical Neurophysiology·D FriedmanI Rapin
Sep 1, 1975·Electroencephalography and Clinical Neurophysiology·R GalambosH Osier
Mar 1, 1974·Journal of Speech and Hearing Research·J D Grabow, F W Elliott
Sep 24, 1971·Science·C C WoodR S Day

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Citations

Nov 1, 1988·International Journal of Psychophysiology : Official Journal of the International Organization of Psychophysiology·J P O'HalloranL S Larkey
Nov 1, 1984·Electroencephalography and Clinical Neurophysiology·S SobótkaW Budohoska
Sep 1, 1990·Brain and Cognition·C A NelsonF Torres
Feb 12, 1998·Journal of Speech, Language, and Hearing Research : JSLHR·M D MorganK Burk
Dec 9, 2003·American Journal of Speech-language Pathology·Molly L Erickson

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