Age-related differences in the perception of Korean laryngeal contrasts: fMRI evidence
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초록
This study aims to investigate whether there is any difference in the neural correlate of the comprehension of Korean laryngeal contrasts between younger and older Korean adults, and more specifically, to test if the increasingly popular “tonogenesis” hypothesis that Koreans may be undergoing a shift in Korean stop system can be supported by the neural findings of the present study. Five younger and five older Koreans were scanned while performing the auditory identification task of word-initial stops. The fMRI results revealed that there is a significant difference in activation between younger and older subjects. Specific activities unique to younger speakers were observed in the right Superior Temporal Gyrus, an area of the brain associated with pitch perception, while those unique to older speakers in the left Superior Temporal Gyrus, an area responsible for Voice Onset Time (VOT) perception. The results of this study uphold the claim that the laryngeal contrasts of Korean are increasingly distinguished less by VOT differences than by their effect on pitch in the following vowel.
Abstract
This study aims to investigate whether there is any difference in the neural correlate of the comprehension of Korean laryngeal contrasts between younger and older Korean adults, and more specifically, to test if the increasingly popular “tonogenesis” hypothesis that Koreans may be undergoing a shift in Korean stop system can be supported by the neural findings of the present study. Five younger and five older Koreans were scanned while performing the auditory identification task of word-initial stops. The fMRI results revealed that there is a significant difference in activation between younger and older subjects. Specific activities unique to younger speakers were observed in the right Superior Temporal Gyrus, an area of the brain associated with pitch perception, while those unique to older speakers in the left Superior Temporal Gyrus, an area responsible for Voice Onset Time (VOT) perception. The results of this study uphold the claim that the laryngeal contrasts of Korean are increasingly distinguished less by VOT differences than by their effect on pitch in the following vowel.
참고문헌 (24)
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