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 新颖词汇学习中大脑激活模式的fMRI研究(PDF)

《心理学探新》[ISSN:1003-5184/CN:36-1228/B]

期数:
 2010年30卷02期
页码:
 41-47
栏目:
 认知心理学
出版日期:
 2010-03-01

文章信息/Info

Title:
 Brain Activations in Novel Word Learning
作者:
 方卓1; 王伟2; 熊小双2; 肖壮伟1; 张学新3
 1.汕头大学 医学院广东省医学分子影像重点实验室, 广东 515041; 2.西安第四军医大学 唐都医院放射科，西安 710038; 3. 香港中文大学 心理系，香港 999077
Author(s):
 Fang Zhuo1; Wang Wei2; Xiong Xiaoshuang2; Xiao Zhuangwei1; Zhang Xuexin3
 1.Guangdong Key Laboratory of Medical Molecular Imaging, Shantou 515063 ；2.Department of Radiology,Tangdu Hospital,Fourth Military Medical University,Xi’an 710038；3.The Chinese University of Hong Kong,Department of Psychology,Hong Kong 999077
关键词:
 新颖词汇学习; 大脑激活; 语音加工; 语义加工;  fMRI
Keywords:
 novel lexical leaning;  phonology;  semantics;  brain activitations;  fMRI
分类号:
 B842.5
DOI:
 -
文献标识码:
 A
摘要:
 该研究利用功能磁共振脑成像（fMRI）技术，比较在新颖语言学习和母语学习过程中大脑皮层参与的异同。实验设置德语学习和汉语学习两个条件，采用跨通道联结学习范式，要求被试在听到听觉词汇后，按键判断屏幕上所呈现的图片是否与所听词汇匹配。行为数据显示，被试在六段实验后基本掌握了德语语音和语义之间的联结关系；脑成像数据显示，两种学习任务都激活了语言加工的主要脑区，而德语词汇学习过程相比汉语参照条件对应的颞叶激活强度与范围有较大的差异，并且比汉语条件表现出更显著的前额叶区域激活。
Abstract:
 This study uesd fMRI to examine the brain regions involved in phonological and semantic processing during a novel lexical learning task. Chinese participants who did not know German learned to match spoken German words with pictures. Following presentation of an auditory word, participants would see a picture displayed on the screen and were asked to judge whether or not the picture matched the word and then indicate their response with a button press. A task involving mapping between Chinese words and pictures that does not involve learning was used as a control.Compared to the resting baseline, the Chinese and the German tasks activated a comparable network of brain regions, Learning German words elicited greater activation than the Chinese task in bilateral middle frontal gyrus (BA9/46), bilateral superior frontal gyrus (BA8), bilateral middle temporal gyrus (BA21), right middle cccipital gyrus (BA18/19) and right lingual gyrus, indicating their involvement in novel lexical learning.

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备注/Memo

备注/Memo:
 基金项目：香港中文大学Direct Grant#2020911项目。 〖HTH〗通讯作者：张学新，E-mail:jxzhang@cuhk.edu.hk。
更新日期/Last Update:  2011-11-02