Walking or talking?:: Behavioral and neurophysiological correlates of action verb processing
Walking or talking?:: Behavioral and neurophysiological correlates of action verb processing
复制标题
DOI：
10.1006/brln.2000.2390
复制
发表时间：
2001-08-01
影响因子：
2.5
通讯作者：
Hummel, F
中科院分区：
文献类型：
--
作者：
Pulvermüller, F;Härle, M;Hummel, F
视觉呈现的单词引起的大脑活动进行了研究，使用行为措施和电流源密度计算从高分辨率EEG记录。比较了不同身体部位的动作动词。行为数据表明，更快的处理动词指的是与面部肌肉和发音器官进行的行动;（脸相关的话）相比，动词指的是涉及下半身的动作（腿相关的话）。动词类型引起的大脑活动的显着地形差异被发现开始类似的250毫秒后，字发作。差异出现在记录网站位于运动带和相邻的额叶皮层。在顶点，靠近腿的皮层代表，与腿相关的动词（例如，走路）产生最强的传入电流，而对于面部相关的动词（例如，说话），最强的传入活动出现在更外侧的电极上，放置在左侧大脑外侧裂上，靠近发音器官的代表。因此，动作词会引起运动带的沿着不同的激活，最强的传入活动发生在靠近身体部位的皮质表征处，这些部位主要用于执行动词所指的动作。地形特定的生理迹象的文字处理开始较早的脸有关的话，持续时间较长的动词指的是腿部运动。我们的结论是，动词类型可以在他们的加工速度不同，可以引起不同的皮层地形神经生理活动。这些行为和生理上的差异可能与认知过程有关，特别是与词汇语义通达有关。我们的研究结果与联想理论相一致，联想理论认为单词在大脑中是以分布式细胞组装的形式组织起来的，其皮层分布反映了单词的含义。(C)北京：科学出版社.
Brain activity elicited by visually presented words was investigated using behavioral measures and current source densities calculated from high-resolution EEG recordings. Verbs referring to actions usually performed with different body parts were compared. Behavioral data indicated faster processing of verbs referring to actions performed with the face muscles and articulators; (face-related words) compared to verbs referring to movements involving the lower half of the body (leg-related words). Significant topographical differences in brain activity elicited by verb types were found starting similar to 250 ms after word onset. Differences were seen at recording sites located over the motor strip and adjacent frontal cortex. At the vertex, close to the cortical representation of the leg, leg-related verbs (for example, to walk) produced strongest in-going currents, whereas for face-related verbs (for example, to talk) the most ingoing activity was seen at more lateral electrodes placed over the left Sylvian fissure, close to the representation of the articulators. Thus, action words caused differential activation along the motor strip, with strongest in-going activity occurring close to the cortical representation of the body parts primarily used for carrying out the actions the verbs refer to. Topographically specific physiological signs of word processing started earlier for face-related words and lasted longer for verbs referring to leg movements. We conclude that verb types can differ in their processing speed and can elicit neurophysiological activity with different cortical topographies. These behavioral and physiological differences can be related to cognitive processes, in particular to lexical semantic access. Our results are consistent with associative theories postulating that words are organized in the brain as distributed cell assemblies whose cortical distributions reflect the words' meanings. (C) 2001 Academic Press.