Inhibition of return across eye and object movements: the role of prediction.
Inhibition of return across eye and object movements: the role of prediction.
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DOI：
10.1037/a0030092
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发表时间：
2013-06
期刊：
影响因子：
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通讯作者：
Hannah M. Krüger;A. Hunt
中科院分区：
文献类型：
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作者：
Hannah M. Krüger;A. Hunt
对最近检查过的地点出现的目标的反应较慢，这种效应被称为返回抑制（IOR）。IOR通常被认为是一种无意识机制的结果，这种机制阻止了对以前访问过的位置的重新检查，从而在视觉搜索过程中将注意力偏向于新的位置。为了使抑制性标记机制有效地发挥这一功能，它应该对眼球运动和环境中物体的运动具有鲁棒性。我们研究了运动的可预测性是否支持眼动空间坐标和物体运动中基于物体的坐标中抑制标签的编码。无论眼动方向的可预测性如何，在眼动的视网膜定位和空间定位坐标上都观察到IOR。在一项匹配实验中，但与可预测或不可预测的物体运动而不是眼球运动相比，IOR的大小因物体运动而降低，并且在基于物体的坐标中未被观察到，即使运动是可预测的。综上所述，这些结果表明，抑制标签可以跟踪物体在视网膜上的运动，但前提是这种运动是自我产生的。我们得出的结论是，在整个扫视过程中，在维持对先前参与对象的抑制中起关键作用的是参照复制，而不是预测。
Responses are slower to targets appearing in recently inspected locations, an effect known as Inhibition of Return (IOR). IOR is typically viewed as the consequence of an involuntary mechanism that prevents reinspection of previously visited locations and thereby biases attention toward novel locations during visual search. For an inhibitory tagging mechanism to serve this function effectively, it should be robust against eye movements and the movements of objects in the environment. We investigated whether the predictability of motion supports the coding of inhibitory tags in spatiotopic coordinates across eye movements and object-based coordinates across object motion. IOR was observed in both retinotopic and spatiotopic coordinates across eye movements, regardless of the predictability of the eye movement direction. In a matching experiment, but with predictable or unpredictable object motion instead of eye movements, IOR was reduced in magnitude by object motion and was not observed in object-based coordinates, even when the motion was predictable. Together the results suggest inhibitory tags can track objects as they move across the retina, but only when this motion is self-generated. We conclude that efference copy, not prediction, plays a key role in maintaining inhibition on previously attended objects across saccades.