BRAIN and NERVE Shinkei Kenkyu no Shinpo Volume 70, Issue 7 (July 2018)

Feature Integration in Visual Working Memory Jun Saiki 1 1Graduate School of Human and Environmental Studies, Kyoto University Keyword: 視覚性ワーキングメモリ , 特徴統合 , 前頭前皮質 , 変化検出 , 多物体追跡 , visual working memory , feature integration , prefrontal cortex , change detection , multiple object tracking pp.733-743
Published Date 2018/7/1
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This article reviews studies on feature integration in visual working memory, which is critical for various cognitive activities using visual information. Studies involving change detection and multiple object tracking tasks reported that feature-integrated object representations are successfully maintained, and that the parietal cortex plays a major role. Subsequent studies that involved explicit tasks on feature combination, such as feature swap detection and multiple object permanence tracking, revealed the role of the prefrontal cortex, but it remains equivocal whether visual working memory holds feature-integrated object representations. In addition, recent studies using an implicit-association test measure, the redundant feature reviewing task, combining object reviewing and redundancy gain paradigms, provided evidence on feature-integrated object representations in visual working memory. Electroencephalography data analysis showed prefrontal activities reflecting the integration of the color and shape of an object, which is consistent with the result of studies measuring explicit tasks. Altogether, these findings are consistent with a recently proposed “feature confirmation” model, claiming that object features can be integrated in bottom-up visual processing and the limitation in feature binding occurs in the top-down mechanism which confirms the presence of features and their combination.

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BRAIN and NERVE-神経研究の進歩
70巻7号 (2018年7月)
電子版ISSN 1344-8129 印刷版ISSN 1881-6096 医学書院