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Titolo:
Emotionally arousing pictures increase blood glucose levels and enhance recall
Autore:
Blake, TM; Varnhagen, CK; Parent, MB;
Indirizzi:
Univ Alberta, Dept Psychol, Edmonton, AB T6G 2E9, Canada Univ Alberta Edmonton AB Canada T6G 2E9 hol, Edmonton, AB T6G 2E9, Canada
Titolo Testata:
NEUROBIOLOGY OF LEARNING AND MEMORY
fascicolo: 3, volume: 75, anno: 2001,
pagine: 262 - 273
SICI:
1074-7427(200105)75:3<262:EAPIBG>2.0.ZU;2-D
Fonte:
ISI
Lingua:
ENG
Soggetto:
HIPPOCAMPAL ACETYLCHOLINE-RELEASE; ELDERLY HUMANS; PLASMA-GLUCOSE; MEMORY STORAGE; 24-H MEMORY; RATS; MICE; MODULATION; AMNESIA; EVENTS;
Keywords:
arousal; blood glucose; emotion; human; memory; recall;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
52
Recensione:
Indirizzi per estratti:
Indirizzo: Parent, MB Georgia State Univ, Dept Psychol, Univ Plaza, Atlanta, GA 30303USA Georgia State Univ Univ Plaza Atlanta GA USA 30303 GA 30303 USA
Citazione:
T.M. Blake et al., "Emotionally arousing pictures increase blood glucose levels and enhance recall", NEUROBIOL L, 75(3), 2001, pp. 262-273

Abstract

Arousal enhances memory in human participants and this enhancing effect islikely due to the release of peripheral epinephrine. As epinephrine does not readily enter the brain, one way that peripheral epinephrine may enhancememory is by increasing circulating blood glucose levels. The present study investigated the possibility that emotionally arousing color pictures would improve memory and elevate blood glucose levels in human participants. Blood glucose levels were measured before, 15 min, and 30 min after male university students viewed 60 emotionally arousing or relatively neutral pictures. Participants viewed each picture for 6 s and then had 10 s to rate thearousal (emotional intensity) and valence (pleasantness) of each picture. A free-recall memory test was given 30 min after the last picture was viewed. Although the emotionally arousing and neutral picture sets were given comparable valence ratings, participants who viewed the emotionally arousing pictures rated the pictures as being more arousing, recalled more pictures,and had higher blood glucose levels after viewing the pictures than did participants who viewed the neutral pictures. These findings indicate that emotionally arousing pictures increase blood glucose levels and enhance memory, and that this effect is nor due to differences in the degree of pleasantness of the stimuli. These findings support the possibility that increases in circulating blood glucose levels in response to emotional arousal may bepart of the biological mechanism that allows emotional arousal to enhance memory. (C) 2001 Academic Press.

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Documento generato il 29/03/20 alle ore 01:14:29