Evidence for an attentional priority map in inferotemporal cortex
Evidence for an attentional priority map in inferotemporal cortex
复制标题
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
中科院分区:
文献类型:
--
作者:
H. Stemmann;W. Freiwald
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.
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影响因子:
3.7
作者:
Felleman, Daniel J.;Van Essen, David C.
通讯作者:
Van Essen, David C.
影响因子:
56.9
作者:
GALLANT, JL;BRAUN, J;VANESSEN, DC
通讯作者:
VANESSEN, DC
DOI:
10.1037//0096-3445.126.1.3
发表时间:
1997
期刊:
Journal of experimental psychology. General.
影响因子:
--
作者:
Kramer,AF;Weber,TA;Watson,SE
通讯作者:
Watson,SE
影响因子:
2.5
作者:
McAdams, CJ;Maunsell, JHR
通讯作者:
Maunsell, JHR