Functional Organization of the Ventral Auditory Pathway.
Functional Organization of the Ventral Auditory Pathway.
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DOI：
10.1007/978-3-319-25474-6_40
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发表时间：
2016
影响因子：
--
通讯作者：
Tsunada J
中科院分区：
文献类型：
--
作者：
Cohen YE;Bennur S;Christison-Lagay K;Gifford AM;Tsunada J
听觉的基本问题是确定大脑将未标记的听觉刺激混合物转换为连贯的感知表征所需的机制。这个过程被称为场景分析。知觉表征是通过知觉分组、注意、分类和决策的复杂交互作用而形成的。尽管科学家们投入了大量的精力来理解听觉的这些方面，但我们仍然不明白（1）声音感知是如何从神经活动中产生的，以及（2）神经活动和声音感知之间的因果关系。在这里，我们审查的“腹”听觉通路在声音感知中的作用。我们假设，在听觉皮层的早期部分，神经活动反映了刺激的听觉特性。然而，在听觉皮层的后半部分，神经元对形成听觉决策的感觉证据进行编码，并在决策过程中因果地参与。最后，在接受来自听觉皮层的输入的前额叶皮层中，神经活动反映了实际的感知决定。总之，这些研究表明，腹侧通路包含专门用于听觉感知和场景分析的分层电路。
The fundamental problem in audition is determining the mechanisms required by the brain to transform an unlabelled mixture of auditory stimuli into coherent perceptual representations. This process is called auditory-scene analysis. The perceptual representations that result from auditory-scene analysis are formed through a complex interaction of perceptual grouping, attention, categorization and decision-making. Despite a great deal of scientific energy devoted to understanding these aspects of hearing, we still do not understand (1) how sound perception arises from neural activity and (2) the causal relationship between neural activity and sound perception. Here, we review the role of the “ventral” auditory pathway in sound perception. We hypothesize that, in the early parts of the auditory cortex, neural activity reflects the auditory properties of a stimulus. However, in latter parts of the auditory cortex, neurons encode the sensory evidence that forms an auditory decision and are causally involved in the decision process. Finally, in the prefrontal cortex, which receives input from the auditory cortex, neural activity reflects the actual perceptual decision. Together, these studies indicate that the ventral pathway contains hierarchical circuits that are specialized for auditory perception and scene analysis.