期刊
JOURNAL OF NEUROLOGY
卷 260, 期 10, 页码 2481-2490出版社
SPRINGER HEIDELBERG
DOI: 10.1007/s00415-013-6989-9
关键词
Apathy; Structural MRI; Voxel based morphometry; Progressive supranuclear palsy; Alzheimer's disease
资金
- Medical Research Council [G0500443]
- National Institute for Health Research (NIHR) Mental Health Biomedical Research Centre and Dementia Biomedical Research Unit at South London
- Maudsley NHS Foundation Trust
- King's College London
- MRC [G0500443] Funding Source: UKRI
- Medical Research Council [G0500443] Funding Source: researchfish
Apathy is a neurocognitive syndrome of reduced goal-directed behaviour and is an important cause of disability in neurodegenerative disorders. Frontal-subcortical dysfunction is thought to be important in apathy, but the contribution of individual brain regions to different aspects of the apathy syndrome is poorly understood. We aimed to test the hypotheses that apathy in two distinct neurodegenerative disorders would be associated with frontal lobe atrophy and that reduced initiative and emotional blunting would be associated with distinct patterns of atrophy in functionally relevant brain areas. Seventeen patients with progressive supranuclear palsy (PSP) and 17 patients with Alzheimer's disease (AD) underwent structural MRI scanning at 3 T to provide data for voxel based morphometric analysis. Apathy was defined using Robert's 2009 diagnostic criteria and specific symptoms were assessed with the Apathy Inventory. Patients with and without apathy were matched for important demographic and clinical characteristics. Apathy was associated with atrophy of the ventromedial orbitofrontal cortex and left insula in both AD and PSP. Reduced initiative was specifically associated with atrophy of the anterior cingulate and ventrolateral orbitofrontal cortex whilst emotional blunting was specifically associated with atrophy of the left insula. These findings provide further support for the role of medial frontal regions and insular cortex in apathy and suggest that behavioural and emotional aspects of the apathy syndrome may have distinct neuroanatomical bases.
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