期刊
JOURNAL OF NEUROSCIENCE
卷 38, 期 1, 页码 149-157出版社
SOC NEUROSCIENCE
DOI: 10.1523/JNEUROSCI.1206-17.2017
关键词
attention priority map; early visual cortex; face images; first saccadic eye movements
资金
- National Natural Science Foundation of China [NSFC 31230029, NSFC 31421003, NSFC 61621136008, NSFC 61527804, NSFC 31671168]
- Ministry of Science and Technology of China [MOST 2015CB351800]
Attention priority maps are topographic representations that are used for attention selection and guidance of task-related behavior during visual processing. Previous studies have identified attention priority maps of simple artificial stimuli in multiple cortical and subcortical areas, but investigating neural correlates of priority maps of natural stimuli is complicated by the complexity of their spatial structure and the difficulty of behaviorally characterizing their priority map. To overcome these challenges, we reconstructed the topographic representations of upright/inverted face images from fMRI BOLD signals in human early visual areas primary visual cortex (V1) and the extrastriate cortex (V2 and V3) based on a voxelwise population receptive field model. We characterized the priority map behaviorally as the first saccadic eye movement pattern when subjects performed a face-matching task relative to the condition in which subjects performed a phase-scrambled face-matching task. We found that the differential first saccadic eye movement pattern between upright/ inverted and scrambled faces could be predicted from the reconstructed topographic representations in V1-V3 in humans of either sex. The coupling between the reconstructed representation and the eye movement pattern increased from V1 to V2/3 for the upright faces, whereas no such effect was found for the inverted faces. Moreover, face inversion modulated the coupling in V2/3, but not in V1. Our findings providenewevidence for prioritymapsof natural stimuli in early visual areas and extend traditional attention priority map theories by revealing another critical factor that affects priority maps in extrastriate cortex in addition to physical salience and task goal relevance: image configuration.
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