Left posterior temporal regions are sensitive to auditory categorization.
Left posterior temporal regions are sensitive to auditory categorization.
复制标题
左后颞区对听觉分类很敏感。
DOI：
10.1162/jocn.2008.20081
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发表时间：
2008-07
影响因子：
3.2
通讯作者：
Binder JR
中科院分区：
文献类型：
--
作者：
Desai R;Liebenthal E;Waldron E;Binder JR
最近的研究表明，左上级颞回和沟（LSTG/S）在言语知觉中发挥作用，虽然这些地区的确切功能还不清楚。在这里，我们测试的假设，该地区在LSTG/S中发挥作用的语音音素的分类，无论声音的声学特性和以前的经验，与他们的听众。我们研究了功能性磁共振成像脑激活的变化与从非语音到语音分析的正弦波语音模拟的感知转变。受试者进行了识别任务之前，扫描和歧视任务，在扫描与语音（P）和非语音（N）正弦波的声音，之前（前）和之后（后）被暴露于语音属性的P声音。在行为上，P音的经验会导致对这些声音的分类识别。在PostP > PreP和PostP > PostN对比中，LSTG/S后部的一个区域被激活。对于P音和N音，该区域的激活与个体受试者的分类识别程度相关。结果表明，这些地区的后LSTG/S是敏感的语音的声学特性，也不仅仅是语音信息的存在，而是听者的听觉输入的类别表示的意识。
Recent studies suggest that the left superior temporal gyrus and sulcus (LSTG/S) play a role in speech perception, although the precise function of these areas remains unclear. Here, we test the hypothesis that regions in the LSTG/S play a role in the categorization of speech phonemes, irrespective of the acoustic properties of the sounds and prior experience of the listener with them. We examined changes in functional magnetic resonance imaging brain activation related to a perceptual shift from nonphonetic to phonetic analysis of sine-wave speech analogs. Subjects performed an identification task before scanning and a discrimination task during scanning with phonetic (P) and nonphonetic (N) sine-wave sounds, both before (Pre) and after (Post) being exposed to the phonetic properties of the P sounds. Behaviorally, experience with the P sounds induced categorical identification of these sounds. In the PostP > PreP and PostP > PostN contrasts, an area in the posterior LSTG/S was activated. For both P and N sounds, the activation in this region was correlated with the degree of categorical identification in individual subjects. The results suggest that these areas in the posterior LSTG/S are sensitive neither to the acoustic properties of speech nor merely to the presence of phonetic information, but rather to the listener’s awareness of category representations for auditory inputs.
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影响因子：
2.4
作者：
Mummery, CJ;Ashburner, J;Wise, RJS
通讯作者：
Wise, RJS
DOI：
10.3758/bf03204507
发表时间：
1993-05-01
期刊：
BEHAVIOR RESEARCH METHODS INSTRUMENTS & COMPUTERS
影响因子：
--
作者：
COHEN, J;MACWHINNEY, B;PROVOST, J
通讯作者：
PROVOST, J
影响因子：
3.7
作者：
Liebenthal, E;Binder, JR;Medler, DA
通讯作者：
Medler, DA
影响因子：
3.2
作者：
Liebenthal, E;Binder, JR;Remez, RE
通讯作者：
Remez, RE
影响因子：
5.7
作者：
Dehaene-Lambertz, G;Pallier, C;Dehaene, S
通讯作者：
Dehaene, S