本文關(guān)鍵詞：言語知覺中的感覺運動整合機制　出處：《科技導(dǎo)報》2017年19期 　論文類型：期刊論文

  更多相關(guān)文章： 言語知覺 噪音掩蔽 感覺運動整合 功能性磁共振成像 老年化

【摘要】：大腦如何感知和理解言語是心理學(xué)和腦科學(xué)研究的重要問題之一。近年來,言語產(chǎn)出相關(guān)的皮層言語運動系統(tǒng)(SMS)通常被認(rèn)為以代償調(diào)節(jié)方式參與有噪音干擾和/或信息缺失情況下的言語知覺中。本研究采用功能性核磁共振成像(fMRI)技術(shù)考查在噪音干擾下的音節(jié)辨識任務(wù)中的感覺運動整合機制。研究1發(fā)現(xiàn),SMS的參與程度隨語音辨識難度增加而增加、在噪音干擾下比聽皮層具有更高的音位特異性編碼和表征能力,并且在難度適中時對聽皮層編碼代償作用最大。研究2發(fā)現(xiàn),聽力正常的老年人在噪音干擾下存在音節(jié)辨識困難,且比年輕人更加依賴SMS的活動增加以及較少受到老化和噪音影響的言語運動表征以代償聽覺加工能力的下降。本研究不僅加深了對言語知覺中跨通道感覺運動信息整合機制及其畢生發(fā)展機制的認(rèn)識,還為幫助聽力受損或正常的老年人設(shè)計和開展言語交流康復(fù)訓(xùn)練方案提供了新的視角和啟發(fā)。
[Abstract]:How does the brain perceive and understand speech is one of the important problems of psychology and brain science. In recent years, the speech related cortical motor speech system (SMS) is generally considered to participate in compensatory adjustment with noise and / or lack of information under the condition of speech perception. This study used functional magnetic resonance imaging (the fMRI syllable recognition task in) noise technology in the study of sensorimotor integration mechanism. 1 research found that participation of SMS increased with the increased difficulty in speech recognition, a higher tone specific encoding and characterization of abilities in noise than in the auditory cortex, and moderate difficulty of auditory cortex compensatory encoding most. 2 study found that older adults with normal hearing are difficult in syllable recognition noise, and than young people are more dependent on the activity of SMS increased and less affected by aging and noise Speech sound motion representation to affect the auditory processing ability decreased compensatory. This study not only deepen the understanding of speech perception in cross channel sensorimotor information integration mechanism and development mechanism of the elderly life, design and carry out speech rehabilitation training program to provide a new perspective and inspiration for help hearing impaired or normal.

【作者單位】： 中國科學(xué)院心理研究所;中國科學(xué)院行為科學(xué)重點實驗室;中國科學(xué)院大學(xué)心理學(xué)系;
【分類號】：R338
【正文快照】： 言語交流是人類理解世界和社會交往的基石,準(zhǔn)確理解他人的言語表達并做出適應(yīng)性反應(yīng)是人類大腦重要的本質(zhì)功能。自然情景下,言語交流通常不是在理想條件下發(fā)生,而是伴隨著噪音干擾和/或信息缺失,然而人腦卻有著驚人的在嘈雜、不確定情景下識別言語的能力。深入解析人在自然交，

本文編號：1369186