Speed change detection in foveal and peripheral vision
Speed change detection in foveal and peripheral vision
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DOI：
10.1016/j.visres.2012.08.019
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发表时间：
2012-11
期刊：
影响因子：
1.8
通讯作者：
Andreas Traschütz;W. Zinke;D. Wegener
中科院分区：
文献类型：
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作者：
Andreas Traschütz;W. Zinke;D. Wegener
对恒定运动的感知已经在心理学和生理学上进行了广泛的研究，但是人类检测运动中的动态变化（例如快速速度变化）的能力却很少被描述和理解。然而，这种动态变化的感知和表征具有很强的行为相关性，正如它们对注意力捕获的潜力所示。在本研究中，我们测量和比较检测阈值的瞬时加速度和减速漂移的Gabor补丁在不同的视网膜偏心率。作为主要结果，我们发现检测性能强烈依赖于偏心。在中央凹观看条件下，平均阈值低于加速比减速。然而，在5°和15°偏心之间，该关系被反转，并且减速检测变得比加速度检测更好。一个额外的实验结果表明，这可以解释为一个快速偏心依赖的适应效果。我们的研究结果进行了讨论，特别强调它们与神经生理学实验数据的关系。
Perception of constant motion has been extensively studied both psychophysically and physiologically, but the human ability to detect dynamic changes in motion, such as rapid speed changes, is only poorly characterized and understood. Yet, perception and representation of such dynamic changes is of strong behavioral relevance, as illustrated by their potential for attentional capture. In the present study, we measured and compared detection thresholds for instantaneous accelerations and decelerations of drifting Gabor patches at different retinal eccentricities. As a main result, we find that detection performance depends strongly on eccentricity. Under foveal viewing conditions, average thresholds were lower for accelerations than for decelerations. However, between 5° and 15° eccentricity, this relation is inverted, and deceleration detection becomes better than acceleration detection. Results of an additional experiment suggest that this can be explained by a fast eccentricity-dependent adaptation effect. Our findings are discussed with special emphasis on their relation to data from neurophysiological experiments.