Abstract
A widely held assumption in the speech perception literature for many years was that during the course of processing listeners derive an abstract phonetic representation and, in doing so, discard information about the fine-grained detail of the speech signal. However, more recent research has shown that the representations of speech are much richer than this emphasis on abstract categories would suggest, and that listeners retain in memory a substantial amount of fine-grained acoustic-phonetic information. One line of evidence for the richness of phonetic representations comes from research showing that phonetic categories are internally structured in a graded fashion, with some members of the category perceived as better exemplars (as more ‘‘prototypical’’) than others. In this talk I will describe findings from our research program that highlight some of the characteristics of these internally structured categories, and discuss how these characteristics place constraints on models of phonetic perception. [Work supported by NIDCD.]
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