Spontaneous processing of abstract categorical information in the ventrolateral prefrontal cortex
Spontaneous processing of abstract categorical information in the ventrolateral prefrontal cortex
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DOI：
10.1098/rsbl.2005.0436
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发表时间：
2006-06-22
期刊：
影响因子：
3.3
通讯作者：
Russ, Brian E.
中科院分区：
文献类型：
--
作者：
Cohen, Yale E.;Hauser, Marc D.;Russ, Brian E.
在语言分析和人类认知的各个方面，为了处理更抽象的范畴，人们忽略了观察到的某些形式的变异。在没有训练的情况下，恒河猴根据所传达的信息区分不同类型的发声，而不是根据它们的声学形态。我们假设，腹外侧额叶前皮质(VPFC)中的神经元可能参与了这种自发的分类。为了验证这一假设，我们记录了vPFC的活动，同时恒河猴听传达食物和非食物事件信息的发声。结果表明，在类别歧视之间，但不在类别内。也就是说，vPFC神经元区分与食物有关的发声和与非食物有关的发声，但不在与质量差异有关的食物叫声类别中。这些结果表明，vPFC在抽象范畴信息的自发加工中起着重要作用。
In various aspects of linguistic analysis and human cognition, some forms of observed variation are ignored in the service of handling more abstract categories. In the absence of training, rhesus discriminate between different types of vocalizations based on the information conveyed as opposed to their acoustic morphologies. We hypothesized that neurons in the ventrolateral preErontal cortex (vPFC), an area involved in auditory-object processing, might be involved in this spontaneous categorization. To test this hypothesis, we recorded vPFC activity while rhesus listened to vocalizations conveying information about food and non-food events. Results showed between, but not within category discrimination. That is, vPFC neurons discriminated between vocalizations associated with food versus non-food events but not within the class of food calls associated with differences in quality. These results indicate that the vPFC plays a significant role in spontaneously processing abstract categorical information.