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Exp Brain Res. 2000 Jul;133(1):12-22.

Object working memory and visuospatial processing: functional neuroanatomy analyzed by event-related fMRI.

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  • 1Max-Planck-Institute of Cognitive Neuroscience, Leipzig, Germany.


We report an event-related functional magnetic-resonance-imaging (fMRI) experiment that investigates the relationship of transient visual object memory, visuospatial orienting, and object recognition. Delayed object matching and visuospatial orienting involved a highly overlapping network of brain areas. Common areas were the frontal eye fields (FEF), the pre-supplementary motor area (pre-SMA)/SMA complex, the precentral gyri, and the horizontal and descending branches of the intraparietal sulcus (IPS). Selective delay activation was observed anterior to the FEF and in the ascending part of the IPS. Right dorsolateral prefrontal cortex was involved in goal-directed visual search, but showed no delay activity.

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