Journal
EXPERIMENTAL BRAIN RESEARCH
Volume 194, Issue 2, Pages 191-196Publisher
SPRINGER
DOI: 10.1007/s00221-008-1687-z
Keywords
Neurologic focal brain lesion patients; Prefrontal cortex; Parietal cortex; Object-based attention
Categories
Ask authors/readers for more resources
We demonstrate that attention to object representations is vitally dependent on the prefrontal cortex. Object-based selective attention was compared in neurologic patients with unilateral damage to either the dorsolateral prefrontal cortex (DLPFC) or the parietal cortex and in healthy controls. Our task required a top-down attentional modulation of object representations in which spatial location played no role. All groups could invoke top-down object-based selection, but the DLPFC patients showed a selective deficit when target stimuli were in the hemifield contralateral to the lesioned hemisphere. Our findings indicate that in the healthy brain, anterior cortical mechanisms are crucial for attending to object-centered representations, whereas posterior cortical mechanisms are necessary for attending to objects at locations in the visual scene.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available