Left-Hemisphere Advantage for Click Consonants is Determined by Linguistic Significance and Experience
- 1 January 1999
- journal article
- Published by SAGE Publications in Psychological Science
- Vol. 10 (1) , 65-70
- https://doi.org/10.1111/1467-9280.00108
Abstract
Left-hemisphere (LH) superiority for speech perception is a fundamental neurocognitive aspect of language, and is particularly strong for consonant perception. Two key theoretical aspects of the LH advantage for consonants remain controversial, however: the processing mode (auditory vs. linguistic) and the developmental basis of the specialization (innate vs. experience dependent). Click consonants offer a unique opportunity to evaluate these theoretical issues. Brief and spectrally complex, oral clicks exemplify the acoustic properties that have been proposed for an auditorily based LH specialization, yet they retain linguistic significance only for listeners whose languages employ them as consonants (e.g., Zulu). Speakers of other languages (e.g., English) perceive these clicks as nonspeech sounds. We assessed Zulu versus English listeners' hemispheric asymmetries for clicks, in and out of syllable context, in a dichotic-listening task. Performance was good for both groups, but only Zulus showed an LH advantage. Thus, linguistic processing and experience both appear to be crucial.Keywords
This publication has 29 references indexed in Scilit:
- Baseline asymmetries in brain electrical activity predict dichotic listening performance.Neuropsychology, 1996
- Amodal representation of speech in infantsInfant Behavior and Development, 1993
- Fractionating Language: Different Neural Subsystems with Different Sensitive PeriodsCerebral Cortex, 1992
- Lexical organization of nouns and verbs in the brainNature, 1991
- Consonant discrimination by newborn infants: Electrophysiological differencesDevelopmental Neuropsychology, 1991
- Listening with eye and hand: Cross-modal contributions to speech perception.Journal of Experimental Psychology: Human Perception and Performance, 1991
- The Attention System of the Human BrainAnnual Review of Neuroscience, 1990
- On the Objects of Speech PerceptionEcological Psychology, 1989
- Dichotic Listening in the Morning and EveningInternational Journal of Neuroscience, 1984
- Electrographic correlates of lateral asymmetry in the processing of verbal and nonverbal auditory stimuliJournal of Psycholinguistic Research, 1974