期刊
JOURNAL OF THE EXPERIMENTAL ANALYSIS OF BEHAVIOR
卷 80, 期 2, 页码 205-215出版社
SOC EXP ANALYSIS BEHAVIOR INC
DOI: 10.1901/jeab.2003.80-205
关键词
speech perception; phonemes; rise time; duration; discrimination learning; rats; humans
The voiceless affricate/fricative contrast has played an important role in developing auditory theories of speech perception. This type of theory draws some of its support from experimental data on animals. However, nothing is known about differential responding of affricate/fricative continua by animals. In the current study, the ability of hooded rats to label an affricate/fricative continuum was tested. Transfer (without retraining) to analogous nonspeech continua was also tested. The nonspeech continua were chosen so that if transfer occurred, it would indicate whether the animals had learned to use rise time or duration cues to differentiate affricates from fricatives. The data from 9 of 10 rats indicated that rats can discriminate between these cues and do so in a similar manner to human subjects. The data from 9 of 10 rats also demonstrated that the rise time of the stimulus was the basis of the discrimination; the remaining rat appeared to use duration.
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