Attention and Sentence Processing Deficits in Parkinson's Disease: The Role of Anterior Cingulate Cortex
Identifieur interne : 002597 ( Main/Exploration ); précédent : 002596; suivant : 002598Attention and Sentence Processing Deficits in Parkinson's Disease: The Role of Anterior Cingulate Cortex
Auteurs : Murray Grossman [États-Unis] ; Peter Crino [États-Unis] ; Martin Reivich [États-Unis] ; Matthew B. Stem [États-Unis] ; Howard I. Hurtig [États-Unis]Source :
- Cerebral Cortex [ 1047-3211 ] ; 1992-NaN.
Abstract
Parkinson's disease (PD) is a complex neurodegenerative condition involving a motor disorder that is related to reduced dopaminergic input to the striatum. Intellectual deficits are also seen in PD, but the pathophysiology of these difficulties is poorly understood. Regional cerebral blood flow (rCBF) was studied in neurologically intact subjects during the performance of attention-demanding, sentence processing tasks using positron emission tomography (PET). The results demonstrated significantly increased rCBF in a distributed set of cerebral regions during the detection of an adjective or a particular agent in a sentence, including anterior cingulate cortex, left inferior and middle frontal cortex, left inferior temporo-occipital cortex, posterolateral temporal cortex, left caudate, and left thalamus. We identified defects in this cerebral network by studying PD patients with two PET techniques. Resting PET studies revealed a significant correlation between regional cerebral glucose metabolism in anterior cingulate cortex and deficits in attending to subtle grammatical aspects of sentences. Studies of PD patients with the PET activation technique revealed little change in anterior cingulate and left frontal CBF during performance of the adjective detection or agent detection tasks. These data suggest that a defect in anterior cingulate cortex contributes to the cognitive impairments observed in PD.
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DOI: 10.1093/cercor/2.6.513
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Intellectual deficits are also seen in PD, but the pathophysiology of these difficulties is poorly understood. Regional cerebral blood flow (rCBF) was studied in neurologically intact subjects during the performance of attention-demanding, sentence processing tasks using positron emission tomography (PET). The results demonstrated significantly increased rCBF in a distributed set of cerebral regions during the detection of an adjective or a particular agent in a sentence, including anterior cingulate cortex, left inferior and middle frontal cortex, left inferior temporo-occipital cortex, posterolateral temporal cortex, left caudate, and left thalamus. We identified defects in this cerebral network by studying PD patients with two PET techniques. Resting PET studies revealed a significant correlation between regional cerebral glucose metabolism in anterior cingulate cortex and deficits in attending to subtle grammatical aspects of sentences. Studies of PD patients with the PET activation technique revealed little change in anterior cingulate and left frontal CBF during performance of the adjective detection or agent detection tasks. These data suggest that a defect in anterior cingulate cortex contributes to the cognitive impairments observed in PD.</div></front></TEI><affiliations><list><country><li>États-Unis</li></country><region><li>Pennsylvanie</li></region></list><tree><country name="États-Unis"><region name="Pennsylvanie"><name sortKey="Grossman, Murray" sort="Grossman, Murray" uniqKey="Grossman M" first="Murray" last="Grossman">Murray Grossman</name></region><name sortKey="Crino, Peter" sort="Crino, Peter" uniqKey="Crino P" first="Peter" last="Crino">Peter Crino</name><name sortKey="Hurtig, Howard I" sort="Hurtig, Howard I" uniqKey="Hurtig H" first="Howard I." last="Hurtig">Howard I. 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