期刊
VISION RESEARCH
卷 85, 期 -, 页码 80-89出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.visres.2012.10.006
关键词
Visual attention; Functional magnetic resonance imaging; Visual search; Memory; Learning; Context
资金
- National Institutes of Health [NIMH R01 NS031443]
- Institute for Collaborative Biotechnologies, U.S. Army Research Office [W911NF-09-0001]
Environmental context learned without awareness can facilitate visual processing of goal-relevant information. According to one view, the benefit of implicitly learned context relies on the neural systems involved in spatial attention and hippocampus-mediated memory. While this view has received empirical support, it contradicts traditional models of hippocampal function. The purpose of the present work was to clarify the influence of spatial context on visual search performance and on brain structures involved memory and attention. Event-related functional magnetic resonance imaging revealed that activity in the hippocampus as well as in visual and parietal cortex was modulated by learned visual context even though participants' subjective reports and performance on a post-experiment recognition task indicated no explicit knowledge of the learned context. Moreover, the magnitude of the initial selective hippocampus response predicted the magnitude of the behavioral benefit due to context observed at the end of the experiment. The results suggest that implicit contextual learning is mediated by attention and memory and that these systems interact to support search of our environment. (C) 2012 Elsevier Ltd. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据