Temporally nonadjacent nonlinguistic sounds affect speech categorization

被引:115
作者
Holt, LL [1 ]
机构
[1] Carnegie Mellon Univ, Dept Psychol, Pittsburgh, PA 15213 USA
关键词
D O I
10.1111/j.0956-7976.2005.01532.x
中图分类号
B84 [心理学];
学科分类号
04 ; 0402 ;
摘要
Speech perception is an ecologically important example of the highly context-dependent nature of perception; adjacent speech, and even nonspeech, sounds influence how listeners categorize speech. Some theories emphasize linguistic or articulation-based processes in speech-elicited context effects and peripheral (cochlear) auditory perceptual interactions in non-speech-elicited context effects. The present studies challenge this division. Results of three experiments indicate that acoustic histories composed of sine-wave tones drawn from spectral distributions with different mean frequencies robustly affect speech categorization. These context effects were observed even when the acoustic context temporally adjacent to the speech stimulus was held constant and when more than a second of silence or multiple intervening sounds separated the nonlinguistic acoustic context and speech targets. These experiments indicate that speech categorization is sensitive to statistical distributions of spectral information, even if the distributions are composed of nonlinguistic elements. Acoustic context need be neither linguistic nor local to influence speech perception.
引用
收藏
页码:305 / 312
页数:8
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