期刊
JOURNAL OF NEUROPHYSIOLOGY
卷 100, 期 1, 页码 516-519出版社
AMER PHYSIOLOGICAL SOC
DOI: 10.1152/jn.01287.2007
关键词
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资金
- Medical Research Council Funding Source: Medline
- Wellcome Trust [wt080568ma] Funding Source: Medline
Much recent research has shown that the level of perceptual load in a task determines the perception of task-irrelevant stimuli and associated neural activity, but the mediating neural mechanisms remain unclear. Here we show that increasing the level of perceptual load in a static letter search task results in an increase in the intensity of transcranial magnetic stimulation over V5/MT required to elicit the perception of a moving phosphene. These findings suggest that the neural mechanisms mediating the effects of perceptual load involve reduced visual cortex excitability in task-unrelated areas.
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