Abstract
The present report investigates the effect of various cues to phrase structure upon the hemispherically lateralized processing of phonetic structure. Meaningless sequences were paired for dichotic presentation and were delivered under two different conditions termed structured and semistructured. The dichotic sequences in the two conditions contained the same nonsense syllable stems, English bound morphemes, and English function words. Also each of the sequences in both conditions were grammatically ordered in the sense that if the nonsense stems were replaced by English stems, a grammatical sentence would result. The conditions differed with respect to prosody, however: the structured sequences were characterized by the acoustic correlates of constituent structure; the semistructured sequences were delivered in a monotone. A significant right-ear superiority was observed in the structured condition, but not in the semistructured condition. These perceptual laterality differences are discussed in relation to cerebral dominance for language and in relation to speech processing generally.
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This research was supported by Grant No. APA-291 from the National Research Council of Canada to the first author.
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Zurif, E.B., Mendelsohn, M. Hemispheric specialization for the perception of speech sounds: The influence of intonation and structure. Perception & Psychophysics 11, 329–332 (1972). https://doi.org/10.3758/BF03206262
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DOI: https://doi.org/10.3758/BF03206262