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Spatial updating in human parietal cortex
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DOI：10.1016/S0896-6273(03)00393-3.png)
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摘要
En 中文
Single neurons in monkey parietal cortex update visual information in conjunction with eye movements. This remapping of stimulus representations is thought to contribute to spatial constancy. We hypothesized that a similar process occurs in human parietal cortex and that we could visualize it with functional MRI. We scanned subjects during a task that involved remapping of visual signals across hemifields. We observed an initial response in the hemisphere contralateral to the visual stimulus, followed by a remapped response in the hemisphere ipsilateral to the stimulus. We ruled out the possibility that this remapped response resulted from either eye movements or visual stimuli alone. Our results demonstrate that updating of visual information occurs in human parietal cortex.
Keyword:
SACCADIC EYE-MOVEMENTS
LATERAL INTRAPARIETAL AREA
EXTRASTRIATE VISUAL AREAS
IMPLIES EQUIVALENCIES
AUDITORY-STIMULI
WORKING-MEMORY
MACAQUE
REPRESENTATION
ATTENTION
FMRI
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期刊
IF:
15
论文数:
1.4W
被引数:
9.9W
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