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2017 ; 12
(4
): 671-684
Nephropedia Template TP
gab.com Text
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English Wikipedia
Surface-based morphometry reveals the neuroanatomical basis of the five-factor
model of personality
#MMPMID28122961
Riccelli R
; Toschi N
; Nigro S
; Terracciano A
; Passamonti L
Soc Cogn Affect Neurosci
2017[Apr]; 12
(4
): 671-684
PMID28122961
show ga
The five-factor model (FFM) is a widely used taxonomy of human personality; yet
its neuro anatomical basis remains unclear. This is partly because past
associations between gray-matter volume and FFM were driven by different
surface-based morphometry (SBM) indices (i.e. cortical thickness, surface area,
cortical folding or any combination of them). To overcome this limitation, we
used Free-Surfer to study how variability in SBM measures was related to the FFM
in n?=?507 participants from the Human Connectome Project.Neuroticism was
associated with thicker cortex and smaller area and folding in
prefrontal-temporal regions. Extraversion was linked to thicker pre-cuneus and
smaller superior temporal cortex area. Openness was linked to thinner cortex and
greater area and folding in prefrontal-parietal regions. Agreeableness was
correlated to thinner prefrontal cortex and smaller fusiform gyrus area.
Conscientiousness was associated with thicker cortex and smaller area and folding
in prefrontal regions. These findings demonstrate that anatomical variability in
prefrontal cortices is linked to individual differences in the socio-cognitive
dispositions described by the FFM. Cortical thickness and surface area/folding
were inversely related each others as a function of different FFM traits
(neuroticism, extraversion and consciousness vs openness), which may reflect
brain maturational effects that predispose or protect against psychiatric
disorders.