The time course of visual processing:: Backward masking and natural scene categorisation
The time course of visual processing:: Backward masking and natural scene categorisation
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DOI：
10.1016/j.visres.2005.01.004
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发表时间：
2005-05-01
期刊：
影响因子：
1.8
通讯作者：
Thorpe, SJ
中科院分区：
文献类型：
--
作者：
Bacon-Macé, N;Macé, MJM;Thorpe, SJ
人类观察者非常擅长判断短暂闪现的小说图像中是否包含动物，之前的研究表明，潜在的视觉处理可以在150毫秒内完成。在这里，我们使用掩蔽范式来确定在这样的高级分类任务中，信息是如何随着时间的推移积累的。随着测试图像和掩模之间延迟的增加，行为准确度和差分事件相关电位幅度都迅速增加，并在40-60ms左右达到渐近水平。这些结果表明，视觉系统在每个阶段的处理都非常迅速，信息在激活开始后几乎连续积累。(C)2005爱思唯尔有限公司。保留所有权利。
Human observers are very good at deciding whether briefly flashed novel images contain an animal and previous work has shown that the underlying visual processing can be performed in under 150 ms. Here we used a masking paradigm to determine how information accumulates over time during such high-level categorisation tasks. As the delay between test image and mask is increased, both behavioural accuracy and differential ERP amplitude rapidly increase to reach asymptotic levels around 40-60 ms. Such results imply that processing at each stage in the visual system is remarkably rapid, with information accumulating almost continuously following the onset of activation. (c) 2005 Elsevier Ltd. All rights reserved.