Attention and active vision.

Attention and active vision.
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DOI:
10.1016/j.visres.2008.06.017
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发表时间:
2009-06
期刊:
影响因子:
1.8
通讯作者:
Colby, Carol
Colby, Carol
中科院分区:
心理学3区
文献类型:
--
作者:
Berman, Rebecca;Colby, Carol

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视觉感知是由输入的感觉信号和自上而下的认知和运动信号相互作用的结果。在这里,我们专注于代表出席顶叶皮层和早期视觉皮层区域的位置。我们审查的证据表明,这些空间表征调制不仅通过选择性注意,但也有意移动眼睛。我们描述了最近在猴子和人类中进行的实验,这些实验阐明了更新或重新映射显着刺激的表征所涉及的机制和电路。出现了两个中心思想。首先,选择性注意和重新映射是紧密交织在一起的,它们共同促进了对空间稳定性的理解。第二,重新映射不是由单个区域完成的,而是由顶叶、额叶和纹外皮层以及皮层下结构的参与完成的。这种神经回路的特点是显着的冗余性和可塑性,这表明显着刺激的更新是空间稳定性和视觉空间行为的基础。我们的结论是,多个过程和途径有助于在灵长类动物的大脑中的主动视觉。
Visual perception results from the interaction of incoming sensory signals and top down cognitive and motor signals. Here we focus on the representation of attended locations in parietal cortex and in earlier visual cortical areas. We review evidence that these spatial representations are modulated not only by selective attention but also by the intention to move the eyes. We describe recent experiments in monkey and human that elucidate the mechanisms and circuitry involved in updating, or remapping, the representations of salient stimuli. Two central ideas emerge. First, selective attention and remapping are closely intertwined, and together contribute to the percept of spatial stability. Second, remapping is accomplished not by a single area but by the participation of parietal, frontal and extrastriate cortex as well as subcortical structures. This neural circuitry is distinguished by significant redundancy and plasticity, suggesting that the updating of salient stimuli is fundamental for spatial stability and visuospatial behavior. We conclude that multiple processes and pathways contribute to active vision in the primate brain.
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