Document Detail

Taste-elicited changes in facial signs of emotion and the asymmetry of brain electrical activity in human newborns.
MedLine Citation:
PMID:  3736825     Owner:  NLM     Status:  MEDLINE    
Recent evidence suggests that frontal brain electrical activity reveals asymmetries in activation in response to positive vs negative affective stimuli. This study was designed to evaluate whether this asymmetry is present at birth. Newborn infants were presented with water followed by a sucrose solution and then by a citric acid solution. Facial expression was videotaped during the presentation of the liquids and EEG was recorded from the frontal and parietal scalp regions on the left and right side. Usable EEG data were obtained from 16 newborn infants in response to these taste conditions. Videotaping of facial expression in response to these stimuli indicated the presence of disgust during both water (the first taste introduced) and citric acid. EEG was Fourier Transformed and power in the 1-3, 3-6 and 6-12 Hz bands was computed. The findings revealed that the water condition produced reductions in right-hemisphere power in the two higher frequency bands in both the scalp regions compared with the other two conditions. The sucrose condition produced greater relative left-sided activation in both regions compared with the water condition. These data, in conjunction with our previous findings of asymmetries in 10-month-old infants, indicate that stimulus-elicited affective asymmetries in brain electrical activity are present at birth.
N A Fox; R J Davidson
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, Non-P.H.S.; Research Support, U.S. Gov't, P.H.S.    
Journal Detail:
Title:  Neuropsychologia     Volume:  24     ISSN:  0028-3932     ISO Abbreviation:  Neuropsychologia     Publication Date:  1986  
Date Detail:
Created Date:  1986-09-17     Completed Date:  1986-09-17     Revised Date:  2009-11-11    
Medline Journal Info:
Nlm Unique ID:  0020713     Medline TA:  Neuropsychologia     Country:  ENGLAND    
Other Details:
Languages:  eng     Pagination:  417-22     Citation Subset:  IM    
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MeSH Terms
Citric Acid
Dominance, Cerebral / physiology*
Emotions / physiology*
Facial Expression*
Frontal Lobe / physiology*
Infant, Newborn
Taste / physiology*
Grant Support
Reg. No./Substance:
0/Citrates; 57-50-1/Sucrose; 77-92-9/Citric Acid; 7732-18-5/Water

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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