The nonlinear dynamics of speech categorization.
The nonlinear dynamics of speech categorization.
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语音分类的非线性动力学。
DOI：
10.1037//0096-1523.20.1.3
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发表时间：
1994
期刊：
影响因子：
--
通讯作者：
Kelso,JA
中科院分区：
文献类型：
--
作者：
Tuller,B;Case,P;Ding,M;Kelso,JA
人们对声学和语音感知之间的非线性关系的基本过程知之甚少。实验1探讨了单个声学参数（自然发音s和合成元音ay之间的无声间隙持续时间）的系统变化对语音类别判断的影响。由此产生的范畴边界的变化说和留之间表现出丰富的动态，包括滞后，对比和临界边界效应。提出了一个动态模型来解释所观察到的模式。实验2评估了模型的1个预测，改变2个感知的相对稳定性允许分类切换。与模型一致，刺激重复次数的增加最大限度地提高了边界附近类别变化判断的频率。因此，一个动态的方法提供了一个理论的雏形，时间语境对语音分类的影响。（PsycInfo数据库记录（c）2016阿帕，保留所有权利）
Little is known about the processes underlying the nonlinear relationship between acoustics and speech perception. In Exp 1, the effects of systematic variation of a single acoustic parameter (silent gap duration between a natural utterance of s and a synthetic vowel ay) on judgments of speech category were explored. The resulting shifts in category boundary between say and stay showed rich dynamics, including hysteresis, contrast, and critical boundary effects. A dynamical model is proposed to account for the observed patterns. Exp 2 evaluated 1 prediction of the model, that changing the relative stability of the 2 percepts allows categorical switching. In agreement with the model, an increase in the number of stimulus repetitions maximized the frequency of judgments of category change near the boundary. Thus, a dynamical approach affords the rudiments for a theory of the effects of temporal context on speech categorization.(PsycINFO Database Record (c) 2016 APA, all rights reserved)