作者
Erin Goddard, Thomas A Carlson, Nadene Dermody, Alexandra Woolgar
发表日期
2016/3/1
期刊
Neuroimage
卷号
128
页码范围
385-397
出版商
Academic Press
简介
Object perception involves a range of visual and cognitive processes, and is known to include both a feedfoward flow of information from early visual cortical areas to higher cortical areas, along with feedback from areas such as prefrontal cortex. Previous studies have found that low and high spatial frequency information regarding object identity may be processed over different timescales. Here we used the high temporal resolution of magnetoencephalography (MEG) combined with multivariate pattern analysis to measure information specifically related to object identity in peri-frontal and peri-occipital areas. Using stimuli closely matched in their low-level visual content, we found that activity in peri-occipital cortex could be used to decode object identity from ~ 80 ms post stimulus onset, and activity in peri-frontal cortex could also be used to decode object identity from a later time (~ 265 ms post stimulus onset). Low …
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