کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6203900 | 1263477 | 2009 | 11 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: The role of early visual cortex in visual short-term memory and visual attention The role of early visual cortex in visual short-term memory and visual attention](/preview/png/6203900.png)
We measured cortical activity with functional magnetic resonance imaging to probe the involvement of early visual cortex in visual short-term memory and visual attention. In four experimental tasks, human subjects viewed two visual stimuli separated by a variable delay period. The tasks placed differential demands on short-term memory and attention, but the stimuli were visually identical until after the delay period. Early visual cortex exhibited sustained responses throughout the delay when subjects performed attention-demanding tasks, but delay-period activity was not distinguishable from zero when subjects performed a task that required short-term memory. This dissociation reveals different computational mechanisms underlying the two processes.
Journal: Vision Research - Volume 49, Issue 10, 2 June 2009, Pages 1352-1362