Gray matter correlates of impulsivity in psychopathy and in the general population differ by kind, not by degree: a comparison of systematic reviews.
gray matter
healthy
impulsivity
prefrontal cortex
psychopathy
striatum
Journal
Social cognitive and affective neuroscience
ISSN: 1749-5024
Titre abrégé: Soc Cogn Affect Neurosci
Pays: England
ID NLM: 101288795
Informations de publication
Date de publication:
06 07 2021
06 07 2021
Historique:
received:
10
08
2020
revised:
25
01
2021
accepted:
08
04
2021
pubmed:
10
4
2021
medline:
21
10
2021
entrez:
9
4
2021
Statut:
ppublish
Résumé
A fundamental question in neuropsychiatry is whether a neurobiological continuum accompanies the behavioral continuum between subclinical and clinical traits. Impulsivity is a trait that varies in the general population and manifests severely in disorders like psychopathy. Is the neural profile of severe impulsivity in psychopathy an extreme but continuous manifestation of that associated with impulsivity in the general population (different by degree)? Or is it discontinuous and unique (different by kind)? Here, we compare systematic reviews of the relationship between impulsivity and gray matter in psychopathy and in the general population. The findings suggest that the neural profile associated with extreme impulsivity in psychopathy (increased gray matter in rostral and ventral striatum and prefrontal cortexes) is distinct from that associated with impulsivity in the general population (decreased gray matter in rostral and ventral prefrontal cortexes). Severe impulsivity in psychopathy may therefore arise from a pathophysiological mechanism that is unique to the disorder. These findings prompt the need for future studies to directly test the effect of group on the impulsivity-gray matter relationship in samples comprised of healthy individuals and individuals with psychopathy. The results caution against the use of community samples to examine impulsive psychopathic traits in relation to neurobiology.
Identifiants
pubmed: 33835168
pii: 6218714
doi: 10.1093/scan/nsab045
pmc: PMC8259272
doi:
Types de publication
Journal Article
Research Support, N.I.H., Extramural
Langues
eng
Sous-ensembles de citation
IM
Pagination
683-695Subventions
Organisme : NIDA NIH HHS
ID : F32 DA048580
Pays : United States
Organisme : NIAAA NIH HHS
ID : R01 AA026290
Pays : United States
Informations de copyright
© The Author(s) 2021. Published by Oxford University Press.
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