Semantic Grounding of Novel Spoken Words in the Primary Visual Cortex.
Semantic Grounding of Novel Spoken Words in the Primary Visual Cortex.
复制标题
初级视皮层中新口语词汇的语义基础。
DOI：
10.3389/fnhum.2021.581847
复制
发表时间：
2021
影响因子：
2.9
通讯作者：
Pulvermüller F
中科院分区：
文献类型：
--
作者：
Garagnani M;Kirilina E;Pulvermüller F
基础语义学的具身理论认为，当词义首次习得时，符号（词形）和相应的语义信息之间建立了联系，这些信息存在于大脑的模态-包括初级感觉运动皮层中。然而，记录这种联系出现的直接实验证据（即，表明在学习后，呈现先前未知的、无意义的单词声音会诱导相关的初级感觉或运动脑区域的类别特异性再激活）仍然缺失。在这里，我们提出了新的神经影像学结果，提供了这样的证据。我们通过将他们与熟悉的动作或熟悉的物体联系起来，向参与者传授了以前未知的、毫无意义的新奇口语词汇（如“Shruba”或“Flipe”）的参考意义。训练结束后，我们使用功能性磁共振成像来分析参与者对新语音项目的大脑反应。我们发现，听到新学习的与物体相关的单词声音，选择性地触发了初级视觉皮层、次级和高级视觉区域的活动。这些结果第一次以一种特定类别的方式直接记录了新奇的、以前没有意义的口语项目与主要感觉区域中相应的语义信息之间的联系，为大脑中词义习得的知觉描述提供了实验支持。
Embodied theories of grounded semantics postulate that, when word meaning is first acquired, a link is established between symbol (word form) and corresponding semantic information present in modality-specific—including primary—sensorimotor cortices of the brain. Direct experimental evidence documenting the emergence of such a link (i.e., showing that presentation of a previously unknown, meaningless word sound induces, after learning, category-specific reactivation of relevant primary sensory or motor brain areas), however, is still missing. Here, we present new neuroimaging results that provide such evidence. We taught participants aspects of the referential meaning of previously unknown, senseless novel spoken words (such as “Shruba” or “Flipe”) by associating them with either a familiar action or a familiar object. After training, we used functional magnetic resonance imaging to analyze the participants’ brain responses to the new speech items. We found that hearing the newly learnt object-related word sounds selectively triggered activity in the primary visual cortex, as well as secondary and higher visual areas.These results for the first time directly document the formation of a link between the novel, previously meaningless spoken items and corresponding semantic information in primary sensory areas in a category-specific manner, providing experimental support for perceptual accounts of word-meaning acquisition in the brain.
登录
查看更多内容
DOI：
10.1098/rstb.2009.0111
发表时间：
2009-12-27
期刊：
Philosophical transactions of the Royal Society of London. Series B, Biological sciences
影响因子：
--
作者：
Davis MH;Gaskell MG
通讯作者：
Gaskell MG
影响因子：
3.2
作者：
Binder, JR;Westbury, CF;Medler, DA
通讯作者：
Medler, DA
影响因子：
3.2
作者：
Hawkins, Erin;Astle, Duncan E.;Rastle, Kathleen
通讯作者：
Rastle, Kathleen
影响因子：
3.3
作者：
Griswold, MA;Jakob, PM;Haase, A
通讯作者：
Haase, A
影响因子：
3.6
作者：
Glenberg, Arthur M.;Gallese, Vittorio
通讯作者：
Gallese, Vittorio