The impact of training on the inner-outer asymmetry in crowding.
The impact of training on the inner-outer asymmetry in crowding.
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DOI：
10.1167/jov.23.8.3
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发表时间：
2023-08-01
影响因子：
1.8
通讯作者：
中科院分区：
文献类型：
--
作者：
内-外不对称性，即外侧翼诱导比内侧翼更强的拥挤，是视觉拥挤的标志性特性。目前还不清楚内外不对称的拥挤错误的模式（主要偏向侧翼身份）和拥挤错误的培训的作用的贡献。在典型的径向拥挤显示中，要求20名观察者报告目标Gabor（偏心率为7.5°）的方向，该目标沿着水平子午线沿着位于内或外Gabor两侧。结果表明，外侧翼条件诱导更强的拥挤，伴随着同化错误的类似的目标/侧翼元件的外侧翼。相比之下，内侧翼条件表现出较弱的拥挤，没有显着的拥挤错误模式。群体编码模型表明，外侧体条件下的侧体重量显著高于内侧体条件下的侧体重量。九名观察员继续训练外侧侧翼条件四次。训练减少了内外不对称性，并减少了侧翼重量的外侧翼。学习效果保持了4至6个月。拥挤错误的出现、内外不对称的强度和训练效果的个体差异是明显的。然而，我们的研究结果表明，不同的拥挤机制可能是负责不对称的拥挤效应引起的内，外侧翼，外侧翼主导的外观比内的。训练通过减少目标/侧翼混淆来减少内外不对称，并且学习持续数月，这表明感知学习有可能通过促进神经可塑性来改善视觉表现。
Inner–outer asymmetry, where the outer flanker induces stronger crowding than the inner flanker, is a hallmark property of visual crowding. It is unclear the contribution of inner–outer asymmetry to the pattern of crowding errors (biased predominantly toward the flanker identities) and the role of training on crowding errors. In a typical radial crowding display, 20 observers were asked to report the orientation of a target Gabor (7.5° eccentricity) flanked by either an inner or outer Gabor along the horizontal meridian. The results showed that outer flanker conditions induced stronger crowding, accompanied by assimilative errors to the outer flanker for similar target/flanker elements. In contrast, the inner flanker condition exhibited weaker crowding, with no significant patterns of crowding errors. A population coding model showed that the flanker weights in the outer flanker condition were significantly higher than those in the inner flanker condition. Nine observers continued to train the outer flanker condition for four sessions. Training reduced inner–outer asymmetry and reduced flanker weights to the outer flanker. The learning effects were retained over 4 to 6 months. Individual differences in the appearance of crowding errors, the strength of inner–outer asymmetry, and the training effects were evident. Nevertheless, our findings indicate that different crowding mechanisms may be responsible for the asymmetric crowding effects induced by inner and outer flankers, with the outer flankers dominating the appearance more than the inner ones. Training reduces inner–outer asymmetry by reducing target/flanker confusion, and learning is persistent over months, suggesting that perceptual learning has the potential to improve visual performance by promoting neural plasticity.
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影响因子：
1.8
作者：
Chakravarthi R;Rubruck J;Kipling N;Clarke ADF
通讯作者：
Clarke ADF
影响因子：
3
作者：
GREENHOUSE, SW;GEISSER, S
通讯作者：
GEISSER, S
视觉拥挤的层次稀疏选择模型。
影响因子：
3.5
作者：
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通讯作者：
Whitney D
影响因子：
3.7
作者：
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通讯作者：
Turatto M
影响因子：
1.8
作者：
Dayan, Peter;Solomon, Joshua A.
通讯作者：
Solomon, Joshua A.