Localizing the cortical region mediating visual awareness of object identity
Localizing the cortical region mediating visual awareness of object identity
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DOI：
10.1073/pnas.96.4.1790
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发表时间：
1999-02-16
影响因子：
11.1
通讯作者：
Biederman, I
中科院分区：
文献类型：
--
作者：
Bar, M;Biederman, I
图片的呈现过于简短，以至于无法识别，甚至在强迫选择测试中被猜测到，但这些图片仍然有助于在许多次试验之后识别相同的图片。这种阈下视觉启动进行了比较，图像翻译4.8度内或之间的象限的视野。启动是明显的，只有在启动和测试试验中保持在同一象限内的图像。因此，阈下视觉启动很可能是由皮层区域介导的，在皮层区域中，细胞具有足够大的感受野以响应几乎5度平移的刺激的两种呈现，但其中感受野被限制在单个象限，即猕猴V4或TEO（下颞叶皮层的后部）的人类同源物。因此，对物体身份的意识可能只与下颞叶皮层前部（即TE区）的活动有关。
Presentations of pictures that are too brief to be recognized, or even guessed above chance on a forced-choice test, nonetheless can facilitate the recognition of the same pictures many trials later. This subliminal visual priming was compared for images translated 4.8 degrees either Within or Between quadrants of the visual field. Priming was evident only for images that remained within the same quadrant in priming and test trials. Consequently, subliminal visual priming is likely mediated by cortical areas in which cells have receptive fields large enough to respond to both presentations of a stimulus translated almost 5 degrees, yet where the receptive fields are confined to a single quadrant, namely the human homologue of macaque V4 or TEO (the posterior part of the inferior temporal cortex). Awareness of object identity might therefore be associated exclusively with activity at or beyond the anterior part of the inferior temporal cortex, namely area TE.