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Listening to speech while retaining music: what happens to the right ear advantage?

par Morais, Jose ;Landercy, Michèle
Référence Brain and language, 4, 2, page (295-308)
Publication Publié, 1977

Article révisé par les pairs

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Résumé :

On each trial, subjects were played a dichotic pair of syllables differing in the consonant (/ba/,/da/,/ga/). The pair of syllables was preceded by a melody, or a sentence, and followed by the same or a different melody, or sentence. Subjects either had to retain the first piece of additional material or were free to ignore it. The different combinations of phonemic contrast, additional material, and instruction concerning the additional material were used in different sessions. In each case, the main task of the subjects was to respond to the presence or the absence of the target /ba/ on the ear previously indicated. There was no effect on relative ear accuracy, but the right-ear advantage observed for consonants in response latency when subjects retained a sentence gave way to a small nonsignificant left-ear advantage when subjects retained a melody. Right-ear advantage in response latencies was also observed for vowels in the verbal context, but the contextual effect, although in the same direction as for consonants was very slight. The implications of contextual effects for a theory of the determinants of the auditory laterality effects are discussed.