Bidirectional contrast effects in the perception of VC-CV sequences.
| Number | 398 |
|---|---|
| Year | 1983 |
| Drawer | 7 |
| Entry Date | 11/19/1999 |
| Authors | Repp, B. H. |
| Contact | |
| Publication | Perception & Psychophysics, 33, 147-155. |
| url | http://www.haskins.yale.edu/Reprints/HL0398.pdf |
| Abstract | Examined the contrastive influence of one stop consonant on the perception of another (preceding or following) in 3 experiments with 44 college students, 2 research assistants, and the author. It was found that the perceived places of articulation of 2 successive stop consonants were not independent: Given some ambiguity in the formant transition cues and a closure duration (CD) between 100 and 200 msec, contrastive perceptual interactions in both directions were observed in identification tasks. Retroactive contrast declined as the closure interval lengthened and was strongly influenced by the range of CDs employed, whereas proactive contrast appeared to be less sensitive to these factors (Experiment I). Reduced contrast and no effects of closure duration are obtained in a discrimination task with selective attention to 1 stimulus portion, suggesting that the effects in identification arise largely at a higher level of (phonetic) perception (Experiment II). Contrast effects did not seem to represent a perceptual compensation for coarticulatory ependencies between stops produced in sequence, for there appeared to be little coarticulation as far as place of articulation was concerned (Experiment III). It is hypothesized that the presumed contrast effects do not result from any direct interaction of spectral cues across the closure interval but are due to perceptual information conveyed by the closure itself. It is concluded that listeners' tacit knowledge of canonical speech patterns determine perception. |
| Notes |
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