1. Behavioral and Electrophysiological Evidence for the Impact of Regional Variation on Phoneme Perception
- Author
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Brunelliere, Angele, Dufour, Sophie, Nguyen, Noel, and Frauenfelder, Ulrich Hans
- Abstract
This event-related potential (ERP) study examined the impact of phonological variation resulting from a vowel merger on phoneme perception. The perception of the /e/-/[epsilon]/ contrast which does not exist in Southern French-speaking regions, and which is in the process of merging in Northern French-speaking regions, was compared to the /[slashed o]/-/y/ contrast, which is stable in all French-speaking regions. French-speaking participants from Switzerland for whom the /e/-/[epsilon]/ contrast is preserved, but who are exposed to different regional variants, had to perform a same-different task. They first heard four phonemically identical but acoustically different syllables (e.g., /be/-/be/-/be/-/be/), and then heard the test syllable which was either phonemically identical to (/be/) or phonemically different from (/b[epsilon]/) the preceding context stimuli. The results showed that the unstable /e/-/[epsilon]/ contrast only induced a mismatch negativity (MMN), whereas the /[slashed o]/-/y/ contrast elicited both a MMN and electrophysiological differences on the P200. These findings were in line with the behavioral results in which responses were slower and more error-prone in the /e/-/[epsilon]/ deviant condition than in the /[slashed o]/-/y/ deviant condition. Together these findings suggest that the regional variability in the speech input to which listeners are exposed affects the perception of speech sounds in their own accent. (Contains 3 figures and 1 table.)
- Published
- 2009
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