言语知觉中的感觉运动整合机制

发布时间：2018-01-02 12:19

  本文关键词：言语知觉中的感觉运动整合机制　出处：《科技导报》2017年19期 　论文类型：期刊论文

  更多相关文章： 言语知觉 噪音掩蔽 感觉运动整合 功能性磁共振成像 老年化

【摘要】：大脑如何感知和理解言语是心理学和脑科学研究的重要问题之一。近年来,言语产出相关的皮层言语运动系统(SMS)通常被认为以代偿调节方式参与有噪音干扰和/或信息缺失情况下的言语知觉中。本研究采用功能性核磁共振成像(fMRI)技术考查在噪音干扰下的音节辨识任务中的感觉运动整合机制。研究1发现,SMS的参与程度随语音辨识难度增加而增加、在噪音干扰下比听皮层具有更高的音位特异性编码和表征能力,并且在难度适中时对听皮层编码代偿作用最大。研究2发现,听力正常的老年人在噪音干扰下存在音节辨识困难,且比年轻人更加依赖SMS的活动增加以及较少受到老化和噪音影响的言语运动表征以代偿听觉加工能力的下降。本研究不仅加深了对言语知觉中跨通道感觉运动信息整合机制及其毕生发展机制的认识,还为帮助听力受损或正常的老年人设计和开展言语交流康复训练方案提供了新的视角和启发。
[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.

【作者单位】： 中国科学院心理研究所;中国科学院行为科学重点实验室;中国科学院大学心理学系;
【分类号】：R338
【正文快照】： 言语交流是人类理解世界和社会交往的基石,准确理解他人的言语表达并做出适应性反应是人类大脑重要的本质功能。自然情景下,言语交流通常不是在理想条件下发生,而是伴随着噪音干扰和/或信息缺失,然而人脑却有着惊人的在嘈杂、不确定情景下识别言语的能力。深入解析人在自然交，

本文编号：1369186