Presaccadic attention enhances contrast sensitivity, but not at the upper vertical meridian.
Presaccadic attention enhances contrast sensitivity, but not at the upper vertical meridian.
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DOI：
10.1016/j.isci.2022.103851
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发表时间：
2022-02-18
期刊：
影响因子：
5.8
通讯作者：
Carrasco M
中科院分区：
文献类型：
--
作者：
Hanning NM;Himmelberg MM;Carrasco M
视觉性能具有显着的极性能不对称性：在固定偏心率下，沿水平子午线优于垂直子午线，沿下部子午线优于上部垂直子午线。这些不对称性并不能通过隐蔽的外源性或内源性注意力来缓解，而是在眼睛注视过程中专门进行了研究。然而，日常注意力定向的主要驱动力是扫视准备，在此期间注意力会自动转移到未来的眼睛注视。这种眼跳前的注意力转移被认为是强烈且强制性的，并且依赖于与隐蔽注意力不同的神经计算和基质。因此，我们问：眼跳前注意力能否弥补注视过程中普遍存在的表现不对称？我们的数据复制了注视期间的极性表现不对称性，并记录了眼跳准备期间的相同不对称性。然而，至关重要的是，眼跳前注意力增强了水平和下垂直子午线的对比敏感度，但没有增强上垂直子午线的对比敏感度。因此，眼跳前的注意力非但没有减轻表现的不对称性，反而加剧了它们。眼跳前注意可以减弱视觉感知中的极角不对称性 眼跳前注意力增强水平和下垂直子午线的敏感度 但眼跳前注意不会增强上垂直子午线的敏感度 因此，眼跳前注意力甚至会加剧知觉中的极角不对称性神经科学；感觉神经科学
Visual performance has striking polar performance asymmetries: At a fixed eccentricity, it is better along the horizontal than vertical meridian and the lower than upper vertical meridian. These asymmetries are not alleviated by covert exogenous or endogenous attention, but have been studied exclusively during eye fixation. However, a major driver of everyday attentional orienting is saccade preparation, during which attention automatically shifts to the future eye fixation. This presaccadic attention shift is considered strong and compulsory, and relies on different neural computations and substrates than covert attention. Thus, we asked: Can presaccadic attention compensate for the ubiquitous performance asymmetries observed during eye fixation? Our data replicate polar performance asymmetries during fixation and document the same asymmetries during saccade preparation. Crucially, however, presaccadic attention enhanced contrast sensitivity at the horizontal and lower vertical meridian, but not at the upper vertical meridian. Thus, instead of attenuating performance asymmetries, presaccadic attention exacerbates them. Can presaccadic attention attenuate polar angle asymmetries in visual perception Presaccadic attention enhances sensitivity at horizontal and lower vertical meridians But presaccadic attention does not enhance sensitivity at the upper vertical meridian Thus, presaccadic attention even exacerbates polar angle asymmetries in perception Biological sciences; Neuroscience; Sensory neuroscience
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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：
4.3
作者：
Kupers, Eline R.;Carrasco, Marisa;Winawer, Jonathan
通讯作者：
Winawer, Jonathan
影响因子：
7.7
作者：
Benson NC;Kupers ER;Barbot A;Carrasco M;Winawer J
通讯作者：
Winawer J
影响因子：
--
作者：
Carrasco, M;Talgar, CP;Cameron, EL
通讯作者：
Cameron, EL
影响因子：
1.8
作者：
Deubel, H;Schneider, WX
通讯作者：
Schneider, WX