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Asymmetrical brain activity discriminates between positive and negative affective stimuli in human infants.
Ten-month-old infants viewed videotape segments of an actress spontaneously generating a happy or sad facial expression. Brain activity was recorded from the left and right frontal and parietal scalp regions. In two studies, infants showed greater activation of the left frontal than of the right frontal area in response to the happy segments. Parietal asymmetry failed to discriminate between the conditions. Differential lateralization of the hemispheres for affective processes seems to be established by 10 months of age.
PMID: 7146906 [PubMed - indexed for MEDLINE]
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Cited by 3 PubMed Central articles
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Specific impairments in the recognition of emotional facial expressions in Parkinson's disease.
Clark US, Neargarder S, Cronin-Golomb A.
Neuropsychologia. 2008; 46(9):2300-9. Epub 2008 Mar 30.
[Neuropsychologia. 2008]
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Depressed mood and lateralized prefrontal activity during a Stroop task in adolescent children.
Killgore WD, Gruber SA, Yurgelun-Todd DA.
Neurosci Lett. 2007 Apr 6; 416(1):43-8. Epub 2007 Mar 2.
[Neurosci Lett. 2007]
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Neural responses to facial and vocal expressions of fear and disgust.
Phillips ML, Young AW, Scott SK, Calder AJ, Andrew C, Giampietro V, Williams SC, Bullmore ET, Brammer M, Gray JA.
Proc Biol Sci. 1998 Oct 7; 265(1408):1809-17.
[Proc Biol Sci. 1998]