认知心理学
刺激(心理学)
计算机科学
自然(考古学)
视觉搜索
注意眨眼
视觉感受
作者
Hiroyuki Shinoda,Mary Hayhoe,Anurag Shrivastava
出处
期刊:Vision Research
[Elsevier]
日期:2001-11-01
卷期号:41 (25): 3535-3545
被引量:177
标识
DOI:10.1016/s0042-6989(01)00199-7
摘要
The highly task-specific fixation patterns revealed in performance of natural tasks demonstrate the fundamentally active nature of vision, and suggest that in many situations, top-down processes may be a major factor in the acquisition of visual information. Understanding how a top-down visual system could function requires understanding the mechanisms that control the initiation of the different task-specific computations at the appropriate time. This is particularly difficult in dynamic environments, like driving, where many aspects of the visual input may be unpredictable. We therefore examined drivers' abilities to detect Stop signs in a virtual environment when the signs were visible for restricted periods of time. Detection performance is heavily modulated both by the instructions and the local visual context. This suggests that visibility of the signs requires active search, and that the frequency of this search is influenced by learnt knowledge of the probabilistic structure of the environment.
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