Striatum gray matter reduction in males with an overactive behavioral activation system.
Using optimized voxel-based morphometry, we studied the relationship between gray matter volume in brain areas associated with reward and scores on a behavioral activation system measure (the Sensitivity to Reward scale) in a sample of 50 male undergraduates. Voxel-based morphometry analysis revealed a negative correlation between Sensitivity to Reward scores and gray matter volume in the dorsal striatum and prefrontal cortex. Results indicate that a reduced volume in the striatum might be associated with enhanced reward sensitivity and deficits in inhibitory control.
Barrós-Loscertales
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Department of Psychology, Campus Riu Sec, Faculty Ciencies Humanes i Socials, Universitat Jaume I, e-12071 Castelló, Spain.
Meseguer
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Sanjuán
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Belloch
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Parcet
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Torrubia
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Avila
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D000293:Adolescent; D000328:Adult; D003342:Corpus Striatum / Q000033:anatomy & histology* / Q000502:physiology*; D006801:Humans; D007091:Image Processing, Computer-Assisted; D008279:Magnetic Resonance Imaging / Q000379:methods; D008297:Male; D011569:Psychiatric Status Rating Scales; D012044:Regression Analysis; D012201:Reward