Evidence for an attentional priority map in inferotemporal cortex

Evidence for an attentional priority map in inferotemporal cortex
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颞下皮层注意力优先图的证据

DOI:
10.1073/pnas.1821866116
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发表时间:
2019
影响因子:
11.1
通讯作者:
W. Freiwald
W. Freiwald
中科院分区:
综合性期刊1区
文献类型:
--
作者:
H. Stemmann;W. Freiwald

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意义认知神经科学中的一个基本教条是,注意力由顶叶和前额叶区域控制。在这里,我们表明,在颞叶的一个区域表现出编码注意力焦点的优先图的属性。我们通过全脑功能磁共振成像、电生理单一单位记录和因果电刺激来展示这一点。这一发现改变了我们对视觉通路的组织和注意网络功能的理解。根据接收到的感觉信息,我们的大脑根据当前的行为目标做出选择。这一过程称为选择性注意,由顶叶和额叶区域控制。在这里,我们展示了另一个大脑区域,后颞叶皮质(PITd),也展示了注意力控制的决定性属性。我们在一次专注的运动辨别任务中,通过功能磁共振成像(FMRI)发现了这一区域。来自PITD的单细胞记录显示,在三个注意任务中都有很强的注意力调节,但没有调整到与任务相关的刺激特征,如运动方向或颜色。相反,PITd神经元密切跟踪受试者的注意力状态,并预测即将出现的注意力选择错误。此外,人工电PITd刺激控制了注意选择的位置,而不改变特征辨别。这些是编码注意轨迹的特征盲优先图的定义属性。总而言之,这些结果表明,PITd区是一个注意优先图,它位于收集关于物体属性的信息的战略位置。
Significance A fundamental dogma in the cognitive neurosciences is that attention is controlled by parietal and prefrontal areas. Here, we show that an area in the temporal lobe exhibits the properties of a priority map coding the focus of attention. We show this through whole-brain functional magnetic resonance imaging, electrophysiological single-unit recordings, and causal electrical stimulation. This discovery changes our understanding of the organization of visual pathways and the functions of attention networks. From incoming sensory information, our brains make selections according to current behavioral goals. This process, selective attention, is controlled by parietal and frontal areas. Here, we show that another brain area, posterior inferotemporal cortex (PITd), also exhibits the defining properties of attentional control. We discovered this area with functional magnetic resonance imaging (fMRI) during an attentive motion discrimination task. Single-cell recordings from PITd revealed strong attentional modulation across 3 attention tasks yet no tuning to task-relevant stimulus features, like motion direction or color. Instead, PITd neurons closely tracked the subject’s attention state and predicted upcoming errors of attentional selection. Furthermore, artificial electrical PITd stimulation controlled the location of attentional selection without altering feature discrimination. These are the defining properties of a feature-blind priority map encoding the locus of attention. Together, these results suggest area PITd, located strategically to gather information about object properties, as an attentional priority map.
DOI: 10.1093/cercor/1.1.1
发表时间: 1991-01-01
期刊: CEREBRAL CORTEX
影响因子: 3.7
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Felleman, Daniel J.;Van Essen, David C.
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DOI: 10.1126/science.8418487
发表时间: 1993-01-01
期刊: SCIENCE
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基于对象的注意力选择——分组数组还是空间不变表示?:对 vecera 和 Farah (1994) 的评论。
DOI: 10.1037//0096-3445.126.1.3
发表时间: 1997
期刊: Journal of experimental psychology. General.
影响因子: --
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通讯作者: Watson,SE
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发表时间: 2000-03-01
影响因子: 2.5
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