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Functional imaging of human right hemispheric activation for exploratory movements
Author(s) -
Gitelman Darren R.,
Alpert Nathaniel M.,
Kosslyn Stephen,
Daffner Kirk,
Scinto Leonard,
Thompson William,
Mesulam MMarsel
Publication year - 1996
Publication title -
annals of neurology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 4.764
H-Index - 296
eISSN - 1531-8249
pISSN - 0364-5134
DOI - 10.1002/ana.410390206
Subject(s) - psychology , right hemisphere , neuroscience , statistical parametric mapping , laterality , lateralization of brain function , functional connectivity , cognitive psychology , medicine , magnetic resonance imaging , radiology
Abstract We employed positron emission tomography to examine the functional anatomy of the exploratory‐motor aspect of spatial attention. Subjects moved their right hand under nonexploratory (control) versus exploratory (active) conditions. Movement architecture and eye movements were matched across conditions. Statistical parametric maps of the exploratory (active) minus nonexploratory (control) tasks in subjects using their right hand in the right hemispace demonstrated activation in right cingulate, premotor and posterior parietal areas. The net activation of multiple right hemisphere cortical areas ipsilateral to the active limb and hemispace strongly supports the predicted, distributed network anatomy and is consistent with possible right hemispheric dominance for exploratory attentional movements.