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Titolo:
Sex-specific developmental changes in amygdala responses to affective faces
Autore:
Killgore, WDS; Oki, M; Yurgelun-Todd, DA;
Indirizzi:
Harvard Univ, McLean Hosp, Sch Med, Cognit Neuroimaging Lab, Belmont, MA 02478 USA Harvard Univ Belmont MA USA 02478 Neuroimaging Lab, Belmont, MA 02478 USA
Titolo Testata:
NEUROREPORT
fascicolo: 2, volume: 12, anno: 2001,
pagine: 427 - 433
SICI:
0959-4965(20010212)12:2<427:SDCIAR>2.0.ZU;2-T
Fonte:
ISI
Lingua:
ENG
Soggetto:
FACIAL EXPRESSIONS; CEREBRAL-CORTEX; BRAIN; MRI; ACTIVATION; CHILDREN; EMOTION; FEAR;
Keywords:
adolescence; affect; amygdala; development; dorsolateral prefrontal cortex; emotion; face perception; fear; fMRI; neuroimaging; sex differences;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
29
Recensione:
Indirizzi per estratti:
Indirizzo: Killgore, WDS Harvard Univ, McLean Hosp, Sch Med, Cognit Neuroimaging Lab,115 Mill St, Belmont, MA 02478 USA Harvard Univ 115 Mill St Belmont MA USA02478 , MA 02478 USA
Citazione:
W.D.S. Killgore et al., "Sex-specific developmental changes in amygdala responses to affective faces", NEUROREPORT, 12(2), 2001, pp. 427-433

Abstract

It is hypothesized that adolescent development involves a redistribution of cerebral functions from lower subcortical structures to higher regions ofthe prefrontal cortex to provide greater self-control over emotional behavior. We further hypothesized that this redistribution is likely to be moderated by sex-specific hormonal changes. To examine developmental sex differences in affective processing, 19 children and adolescents underwent fMRI while viewing photographs of faces expressing fear. Males and females differed in the pattern of their amygdala vs prefrontal activation during adolescent maturation. With age, females showed a progressive increase in prefrontal relative to amygdala activation in the left hemisphere, whereas males failed to show a significant age related difference. There appear to be sex differences in the functional maturation of affect-related prefrontal-amygdala circuits during adolescence. NeuroReport 12:427-433 (C) 2001 Lippincott Williams & Wilkins.

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Documento generato il 19/01/20 alle ore 09:04:14