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Titolo:
Amygdala response to facial expressions in children and adults
Autore:
Thomas, KM; Drevets, WC; Whalen, PJ; Eccard, CH; Dahl, RE; Ryan, ND; Casey, BJ;
Indirizzi:
Cornell Univ, Weill Med Coll, Sackler Inst Dev Psychobiol, New York, NY 10021 USA Cornell Univ New York NY USA 10021 Dev Psychobiol, New York, NY 10021 USA Univ Pittsburgh, Dept Psychiat, Pittsburgh, PA USA Univ Pittsburgh Pittsburgh PA USA rgh, Dept Psychiat, Pittsburgh, PA USA Univ Wisconsin, Dept Psychiat, Madison, WI USA Univ Wisconsin Madison WI USA Wisconsin, Dept Psychiat, Madison, WI USA Univ Wisconsin, Dept Psychol, Madison, WI USA Univ Wisconsin Madison WI USA v Wisconsin, Dept Psychol, Madison, WI USA
Titolo Testata:
BIOLOGICAL PSYCHIATRY
fascicolo: 4, volume: 49, anno: 2001,
pagine: 309 - 316
SICI:
0006-3223(20010215)49:4<309:ARTFEI>2.0.ZU;2-Q
Fonte:
ISI
Lingua:
ENG
Soggetto:
POSTTRAUMATIC-STRESS-DISORDER; GENDER DIFFERENCES; FACE RECOGNITION; FEAR; EMOTION; ACTIVATION; DAMAGE; FMRI; REPRESENTATION; STIMULI;
Keywords:
development; amygdala; fMRI; emotion; faces; facial expression;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
53
Recensione:
Indirizzi per estratti:
Indirizzo: Thomas, KM Cornell Univ, Weill Med Coll, Sackler Inst Dev Psychobiol, 1300York Ave,Box 140, New York, NY 10021 USA Cornell Univ 1300 York Ave,Box 140 New York NY USA 10021 21 USA
Citazione:
K.M. Thomas et al., "Amygdala response to facial expressions in children and adults", BIOL PSYCHI, 49(4), 2001, pp. 309-316

Abstract

Background: The amygdala plays a central role in the human response to affective or emotionally charged stimuli, particularly fear-producing stimuli. We examined the specificity of the amygdala response to facial expressionsin adults and children. Methods: Six adults and 12 children were scanned in a 1.5-T scanner duringpassive viewing of fearful and neutral faces using an EPI BOLD sequence. All scans were registered to a reference brain, and analyses of variance were conducted on the pooled data to examine interactions with age and gender. Results: Overall, we observed predominantly left amygdala and substantia innominata activity during the presentation of nonmasked fearful faces relative to fixation, and a decrease in activation in these regions with repeated exposure to the faces. Adults showed increased left amygdala activity forfearful faces relative to neutral faces, This pattern was not observed in the children who showed greater amygdala activity with neutral faces than with fearful faces. For the children, there was an interaction of gender andcondition whereby boys but not girls showed less activity with repeated exposure to the fearful faces. Conclusions: This is the first study to examine developmental differences in the amygdala response to facial expressions using functional magnetic resonance imaging. (C) 2001 Society of Biological Psychiatry.

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Documento generato il 25/01/20 alle ore 06:18:12