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Titolo:
Hemispheric differences in brain activity related to the recognition of emotional expressions by 5-year-old children
Autore:
de Haan, M; Nelson, CA; Gunnar, MR; Tout, KA;
Indirizzi:
Univ Minnesota, Inst Child Dev, Minneapolis, MN 55455 USA Univ Minnesota Minneapolis MN USA 55455 ld Dev, Minneapolis, MN 55455 USA
Titolo Testata:
DEVELOPMENTAL NEUROPSYCHOLOGY
fascicolo: 4, volume: 14, anno: 1998,
pagine: 495 - 518
SICI:
8756-5641(1998)14:4<495:HDIBAR>2.0.ZU;2-6
Fonte:
ISI
Lingua:
ENG
Soggetto:
EVENT-RELATED POTENTIALS; FACIAL EXPRESSIONS; FACES; INFANTS; PERCEPTION; STIMULI; ADULTS; DISCRIMINATION; SPECIALIZATION; DISSOCIATION;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Social & Behavioral Sciences
Citazioni:
53
Recensione:
Indirizzi per estratti:
Indirizzo: Nelson, CA Univ Minnesota, Inst Child Dev, 51 E River Rd, Minneapolis, MN 55455 USA Univ Minnesota 51 E River Rd Minneapolis MN USA 55455 55455 USA
Citazione:
M. de Haan et al., "Hemispheric differences in brain activity related to the recognition of emotional expressions by 5-year-old children", DEV NEUROPS, 14(4), 1998, pp. 495-518

Abstract

Event-related potentials were recorded while 5-year-olds (N= 44) watched slides of a woman posing happy, angry, and fearful, expressions. In 1 session, children were instructed to press a button whenever they saw the happy face, and in another, they were instructed to respond to the fearful face. Four event-related potential components (N170,P280,N400, and P700) differed in amplitude, latency, or both at right compared to left hemisphere recording sites, and hemispheric differences were present at both anterior (F3, F4) and posterior (T5, T6) recording sites. Hemispheric differences in the amplitude of the P700 were influenced by the task instructions: The P700 was larger at the right posterior than the left posterior recording site for nontarget, but not for target, faces. In contrast, hemispheric differences inthe components preceding the P700 were not affected by task instructions. These results suggest that hemispheric differences in brain activity related to recognition of expressions are modulated by the neurocognitive processes involved in attending to a particular expression.

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Documento generato il 29/11/20 alle ore 01:51:20