2015
DOI: 10.3389/fnhum.2015.00318
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Gray Matter Volume Changes in the Apathetic Elderly

Abstract: This study is to test the hypothesis that apathy in healthy participants is closely related to the prefrontal-basal-ganglia circuit and associated structural changes. We selected 36 healthy aged participants with (n = 18) or without apathy (n = 18) from our database. Participants underwent structural MRI scanning, providing data for voxel-based morphometric analysis to explore gray matter changes associated with apathy. Compared to the non-apathy group, the apathy group showed reduced gray matter volume of the… Show more

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Cited by 10 publications
(14 citation statements)
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“…These findings are consistent with the hypothesis that apathy results from disruption of the prefrontal–basal ganglia system,33 a previous study that showed a negative correlation between apathy severity and grey matter density in the bilateral insula in patients with PD,8 and another study that found putamen grey matter volume reductions in apathetic elderly subjects 34. Unlike a previous study that showed lower striatal DAT levels in apathetic patients with PD compared with non-apathetic patients,4 striatal DAT levels did not contribute to apathy in the current study.…”
Section: Discussionsupporting
confidence: 90%
“…These findings are consistent with the hypothesis that apathy results from disruption of the prefrontal–basal ganglia system,33 a previous study that showed a negative correlation between apathy severity and grey matter density in the bilateral insula in patients with PD,8 and another study that found putamen grey matter volume reductions in apathetic elderly subjects 34. Unlike a previous study that showed lower striatal DAT levels in apathetic patients with PD compared with non-apathetic patients,4 striatal DAT levels did not contribute to apathy in the current study.…”
Section: Discussionsupporting
confidence: 90%
“…; for example, the appearance of apathy has been related to a rapid progression to AD 66,67 Future neuroimaging analysis may help to better understand whether apathy affects all brain areas or is exclusively a frontal lobe pathology, as suggested by some studies. 5,32 In conclusion, this study provides new evidence demonstrating that symptoms of apathy affect mental resources differently, which concurs with Stuss et al, 2 Levy and Dubois 3 and Pagonabarraga et al 26 Assessment of apathy with the LARS in combination with an extensive neuropsychological battery allowed us to examine the influence of symptoms of apathy on cognitive performance. To our knowledge, this study is the first to determine that intellectual curiosity, emotion, action initiation and self-awareness factors are associated with a worse performance in attention, processing speed, verbal fluency, visual and verbal memory, working memory, and executive functioning in healthy elderly people.…”
Section: Discussionsupporting
confidence: 88%
“…And the MOG were also found to be increased in patients with EOD compare to young HC. The study on GMV of occipital gyrus increased in MDD patients were limited, but Yan et al found the GMV of left inferior occipital gyrus (IOG) were increased in aged healthy participants with apathy ( Yan et al, 2015 ). They speculated that the increased GMV of IOG might be compensations that enable effective behavior execution in aged participants.…”
Section: Discussionmentioning
confidence: 99%