Presaccadic attention sharpens visual acuity.
Presaccadic attention sharpens visual acuity.
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DOI：
10.1038/s41598-023-29990-2
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发表时间：
2023-02-20
影响因子：
4.6
通讯作者：
Carrasco, Marisa
中科院分区：
文献类型：
--
作者：
Kwak, Yuna;Hanning, Nina M.;Carrasco, Marisa
视觉感知受到空间分辨率的限制，空间分辨率是区分细节的能力。空间分辨率不仅随着偏心率而下降，而且在视野周围的极角位置也不同，也称为“性能场”。为了弥补周边分辨率差，我们进行快速眼球运动-扫视-将周边物体带入高敏锐度的中央凹视觉。早在眼跳开始之前，视觉注意力就转移到眼跳目标位置，并优先考虑视觉处理。这种注意力的前视转移提高了许多视觉任务的表现，但它是否会改变分辨率尚不清楚。在这里，我们调查是否preaccadic注意锐化周边空间分辨率，如果是这样的话，这种效果是否与性能领域的不对称性相互作用。我们测量了视力阈值的方向辨别任务，在固定和扫视准备视野周围。结果表明，注意前的敏锐度，这可以促进顺利过渡，从周边到中央凹的代表。这种敏锐度增强在四个主要位置上是相似的;因此，注意力的典型鲁棒效应不会改变分辨率中的极角差异。
Visual perception is limited by spatial resolution, the ability to discriminate fine details. Spatial resolution not only declines with eccentricity but also differs for polar angle locations around the visual field, also known as ‘performance fields'. To compensate for poor peripheral resolution, we make rapid eye movements—saccades—to bring peripheral objects into high-acuity foveal vision. Already before saccade onset, visual attention shifts to the saccade target location and prioritizes visual processing. This presaccadic shift of attention improves performance in many visual tasks, but whether it changes resolution is unknown. Here, we investigated whether presaccadic attention sharpens peripheral spatial resolution; and if so, whether such effect interacts with performance fields asymmetries. We measured acuity thresholds in an orientation discrimination task during fixation and saccade preparation around the visual field. The results revealed that presaccadic attention sharpens acuity, which can facilitate a smooth transition from peripheral to foveal representation. This acuity enhancement is similar across the four cardinal locations; thus, the typically robust effect of presaccadic attention does not change polar angle differences in resolution.
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影响因子：
1.8
作者：
Carrasco, Marisa;Williams, Patrick E;Yeshurun, Yaffa
通讯作者：
Yeshurun, Yaffa
DOI：
10.1073/pnas.1615504114
发表时间：
2017-04-25
影响因子：
11.1
作者：
Greenwood, John A.;Szinte, Martin;Cavanagh, Patrick
通讯作者：
Cavanagh, Patrick
影响因子：
5.3
作者：
Fernandez, Antonio;Okun, Sara;Carrasco, Marisa
通讯作者：
Carrasco, Marisa
影响因子：
5.8
作者：
Hanning NM;Himmelberg MM;Carrasco M
通讯作者：
Carrasco M
影响因子：
7.7
作者：
Benson NC;Kupers ER;Barbot A;Carrasco M;Winawer J
通讯作者：
Winawer J