Conscious intention to speak proactively facilitates lexical access during overt object naming.
Conscious intention to speak proactively facilitates lexical access during overt object naming.
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DOI：
10.1016/j.jml.2011.06.002
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发表时间：
2012-11-01
影响因子：
4.3
通讯作者：
Costa, Albert
中科院分区：
文献类型：
--
作者：
Strijkers, Kristof;Holcomb, Phillip J.;Costa, Albert
本研究探讨了自上而下的说话意图何时以及如何影响语言产生过程。我们通过比较大脑在公开对象命名和非语言对象分类过程中对已知影响词汇访问的变量（即词频）的电反应来做到这一点。我们发现，在命名过程中，早在刺激发生后 152 毫秒，低频名称物体引发的事件相关大脑电位就开始与高频名称物体产生差异，而在非语言分类过程中，相同的频率比较出现在 200 毫秒后，引发了性质不同的大脑反应。因此，只有当参与者有意识地想要命名一个物体时，大脑才会快速进行词汇访问。这些数据提供的证据表明，自上而下的主动说话意图有助于激活与感知对象相关的词语。
The present study explored when and how the top-down intention to speak influences the language production process. We did so by comparing the brain’s electrical response for a variable known to affect lexical access, namely word frequency, during overt object naming and non-verbal object categorization. We found that during naming, the event-related brain potentials elicited for objects with low frequency names started to diverge from those with high frequency names as early as 152 ms after stimulus onset, while during non-verbal categorization the same frequency comparison appeared 200 ms later eliciting a qualitatively different brain response. Thus, only when participants had the conscious intention to name an object the brain rapidly engaged in lexical access. The data offer evidence that top-down intention to speak proactively facilitates the activation of words related to perceived objects.
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影响因子：
2.4
作者：
Bles M;Jansma BM
通讯作者：
Jansma BM
影响因子：
4.3
作者：
Costa, A;Caramazza, A
通讯作者：
Caramazza, A
影响因子：
3.2
作者：
Carreiras, M;Vergara, M;Barber, H
通讯作者：
Barber, H
DOI：
10.1037//0278-7393.27.6.1430
发表时间：
2001-11-01
影响因子：
2.6
作者：
Caramazza, A;Costa, A;Bi, YC
通讯作者：
Bi, YC
影响因子：
3.4
作者：
DELL, GS;OSEAGHDHA, PG
通讯作者：
OSEAGHDHA, PG