Activation of articulatory information in speech perception.
Activation of articulatory information in speech perception.
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言语感知中发音信息的激活。
DOI：
10.1073/pnas.0904774107
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发表时间：
2010
影响因子：
11.1
通讯作者：
Yuen I
中科院分区：
文献类型：
--
作者：
Yuen I
新出现的神经生理学证据表明，运动系统被激活的言语知觉，但这种活动是否反映了基本的言语知觉过程仍然是一个相当大的争论。我们对这场争论的贡献是报告直接的行为证据，表明特定的发音命令在言语感知过程中自动而非非自动地被激活。我们使用腭电描记术来测量从口语干扰激活的运动信息是否会对印刷目标音节的清晰度产生特定的失真。参与者在听相同的音节或以/t/开头的不一致押韵音节时产生以/k/或/s/开头的目标音节。在/k/的发音闭合期间和/s/的摩擦期间测量目标产物的舌腭接触。结果显示“痕迹”的不一致的干扰目标产品，与不一致的/t/-初始干扰诱导更大的牙槽骨接触的/k/和/s/比一致的干扰。两个进一步的实验确定，（i）这种干扰效应的性质是专门依赖于发音的语音干扰的属性;和（ii）这种干扰效应是唯一的语音干扰，并不会出现时，干扰以印刷形式呈现。结果进行了讨论，在一个更广泛的新兴框架，感知和行动之间的关系，从而感知的行动需要激活的运动系统。
Emerging neurophysiologic evidence indicates that motor systems are activated during the perception of speech, but whether this activity reflects basic processes underlying speech perception remains a matter of considerable debate. Our contribution to this debate is to report direct behavioral evidence that specific articulatory commands are activatedautomaticallyandinvoluntarilyduring speech perception. We used electropalatography to measure whether motor information activated from spoken distractors would yield specific distortions on the articulation of printed target syllables. Participants produced target syllables beginning with /k/ or /s/ while listening to the same syllables or to incongruent rhyming syllables beginning with /t/. Tongue–palate contact for target productions was measured during the articulatory closure of /k/ and during the frication of /s/. Results revealed “traces” of the incongruent distractors on target productions, with the incongruent /t/-initial distractors inducing greater alveolar contact in the articulation of /k/ and /s/ than the congruent distractors. Two further experiments established that (i) the nature of this interference effect is dependent specifically on the articulatory properties of the spoken distractors; and (ii) this interference effect is unique to spoken distractors and does not arise when distractors are presented in printed form. Results are discussed in terms of a broader emerging framework concerning the relationship between perception and action, whereby the perception of action entails activation of the motor system.