The test-retest reliability and spatial tuning of serial dependence in orientation perception.
The test-retest reliability and spatial tuning of serial dependence in orientation perception.
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DOI：
10.1167/jov.22.4.5
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发表时间：
2022-03-02
影响因子：
1.8
通讯作者：
Whitney D
中科院分区：
文献类型：
--
作者：
Kondo A;Murai Y;Whitney D
人类对物体和场景的感知是一致的，即使在视觉输入嘈杂和不稳定的情况下也是如此。这种知觉稳定性的基础机制之一是序列依赖，即在任何给定时刻对物体或特征的感知被拉向以前看到的东西。尽管最近几项研究的发现报告了序列依赖的巨大个体差异，但尚不清楚个体内部序列依赖的稳定性有多大。在此，我们考察了同一观察者在两个不同的时间内方位知觉的序列依赖的稳定性。此外，我们还考察了知觉序列依赖的视野位置特异性。在每一次试验中，观察者查看Gabor斑块，然后通过调整条形的方向来报告其外观方向。对于每个观察者，Gabor在两天都位于中心凹或周边(右或左偏心10°)视野或每天改变位置。结果表明，在个体观察者中，连续相依性的重测可靠性非常高，可以在几天内测量。有趣的是，只有在同一视野位置测量连续依赖时，才会发现受试者内部的高度一致性。这些结果表明，个体在连续依赖中的差异在几天内是稳定的，并且先前刺激同化对当前刺激的感知的时空范围(连续场)可能以观察者特有的方式在不同的视野位置改变。
Humans perceive objects and scenes consistently, even in situations where visual input is noisy and unstable. One of the mechanisms that underlies this perceptual stability is serial dependence, whereby the perception of objects or features at any given moment is pulled toward what was previously seen. Although recent findings from several studies have reported large individual differences in serial dependence, it is not clear how stable the serial dependence is within an individual. Here, we investigated the stability of serial dependence in orientation perception over two different days within the same observers. In addition, we also examined the visual field location specificity of perceptual serial dependence. On each trial, observers viewed a Gabor patch and then reported its apparent orientation by adjusting the orientation of a bar. For each observer, the Gabor was located in the foveal or peripheral (10° right or left eccentricity) visual field on both days or changed location from day to day. The results showed a very high degree of test-retest reliability in serial dependence measured across days within individual observers. Interestingly, this high within-subject consistency was only found when serial dependence was measured at the same visual field location. These results suggest that individual differences in serial dependence are stable across days, and that the spatiotemporal range in which the previous stimulus assimilates the perception of the current stimulus (the continuity field) may vary across different visual field locations in an observer-specific manner.
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