Functional anatomy of inner speech and auditory verbal imagery
Functional anatomy of inner speech and auditory verbal imagery
复制标题
DOI：
10.1017/s0033291700033699
复制
发表时间：
1996-01-01
影响因子：
6.9
通讯作者：
Frith, CD
中科院分区：
文献类型：
--
作者：
McGuire, PK;Silbersweig, DA;Frith, CD
使用正电子发射断层扫描（PET）检查正常志愿者的内部言语和听觉言语意象的神经相关性。受试者被显示单个单词，他们用来生成简短的，刻板的句子，而不说话。在内部言语任务中，句子是无声地表达出来的，而在听觉言语意象条件下，受试者想象句子是用另一个人的声音对他们说的。内部言语与左额下回的活动增加有关。听觉言语想象与同一区域的增加有关，包括左侧运动前区、辅助运动区和左侧颞叶皮层。这些数据表明，句子的无声发音涉及与语音生成有关的区域的活动，而想象语音则与语音感知相关区域的额外活动有关。
The neural correlates of inner speech and of auditory verbal imagery were examined in normal volunteers, using positron emission tomography (PET). Subjects were shown single words which they used to generate short, stereotyped sentences without speaking. In an inner speech task, sentences were silently articulated, while in an auditory verbal imagery condition, subjects imagined sentences being spoken to them in an another person's voice. Inner speech was associated with increased activity in the left inferior frontal gyrus. Auditory verbal imagery was associated with increases in the same region, and in the left premotor cortex, the supplementary motor area and the left temporal cortex. The data suggest that the silent articulation of sentences involves activity in an area concerned with speech generation, while imagining speech is associated with additional activity in regions associated with speech perception.