| Neural mechanisms of visual object priming: Evidence for perceptual and semantic distinctions in fusiform cortex (2003) | |||||||||||
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Abstract | |||||||||||
| NeuroImage www elsevier com locate ynimg Neural mechanisms visual object priming evidence for perceptual and semantic distinctions fusiform cortex Jon Simons Wilma Koutstaal Steve Prince Anthony Wagner and Daniel Schactera Department Psychology Harvard University Cambridge USA Department Psychology University Reading Reading Department Brain and Cognitive Sciences MIT Cambridge USA Received July accepted December Abstract Previous functional imaging studies have shown that facilitated processing visual object repeated relative initial presentation repetition priming associated with reductions neural activity multiple regions including fusiform lateral occipital cortex Moreover activity reductions have been found diminished levels when different exemplar object presented repetition one previous study the magnitude diminished priming across exemplars was greater the right relative the left fusiform suggesting greater exemplar specificity the right Another previous study however observed fusiform lateralization modulated object viewpoint but not object exemplar The present fMRI study sought determine whether the result differential fusiform responses for perceptually different exemplars could replicated Furthermore the role the left fusiform cortex object recognition was investigated via the inclusion lexical semantic manipulation Right fusiform cortex showed significantly greater effect exemplar change than left fusiform replicating the previous result exemplar specific fusifor | |||||||||||
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