Behavioral and electrophysiological indices of voicing-cue discrimination: laterality patterns and development.
Voicing is an important phonetic dimension that distinguishes voiced (i.e., /b/) from voiceless-aspirated stop consonants (i.e.,/ph/) in English. Perception of discrete voicing categories is affected by a number of acoustic cues. The present paper reviews evidence from brain-damaged populations indicating that the perception of certain voicing cues is less dependent upon left hemisphere mechanisms than the ability to perceive place of articulation contrasts (e.g., /b/ vs./d/). In addition, electrophysiological and dichotic listening studies with neurologically normal individuals support the view that the right hemisphere may play a special role in the categorical processing of voicing. These findings are discussed in relation to current models of hemispheric specialization and laterality for language.
Simos
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PG
Department of Psychology, Southern Illinois University, Carbondale 62901-6502, USA.
Molfese
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DL
Brenden
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RA
D000328:Adult; D000368:Aged; D002648:Child; D002675:Child, Preschool; D004569:Electroencephalography; D005260:Female; D007839:Functional Laterality; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D008297:Male; D008875:Middle Aged; D010700:Phonetics; D013061:Speech Acoustics; D013067:Speech Perception; D013997:Time Factors; D014831:Voice