Contrast effects on stop consonant identification.

摘要: Changes in the identification of speech sounds following selective adaptation are usually attributed to a reduction sensitivity auditory feature detectors. An alternative explanation these effects is based on notion response contrast. In several experiments, subjects identified initial segment synthetic consonant-vowel syllables as either voiced stop [b] or voiceless [ph]. Each test syllable had value voice onset time (VOT) that placed it near English voiced-voiceless boundary. When were preceded by single clear (VOT = -100 msec), tended identify them [ph], whereas when they an unambiguous [ph] 100 predominantly labeled [b]. This contrast effect occurred even contextual stimuli velar and bilabial, which suggests featural rather than phonemic basis for effect. To discount possibility might be instances single-trial sensory adaptation, we conducted similar experiment followed items. Reliable still obtained. view results, appears likely accounts at least some component reported literature.