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Titolo:
The temporal response of the brain after eating revealed by functional MRI
Autore:
Liu, YJ; Gao, JH; Liu, HL; Fox, PT;
Indirizzi:
Univ Florida, Dept Psychiat, Gainesville, FL 32610 USA Univ Florida Gainesville FL USA 32610 Psychiat, Gainesville, FL 32610 USA Univ Florida, Inst Brain, Gainesville, FL 32610 USA Univ Florida Gainesville FL USA 32610 st Brain, Gainesville, FL 32610 USA Univ Texas, Hlth Sci Ctr, Res Imaging Ctr, San Antonio, TX 78284 USA Univ Texas San Antonio TX USA 78284 maging Ctr, San Antonio, TX 78284 USA Univ Texas, Hlth Sci Ctr, Dept Physiol, San Antonio, TX 78284 USA Univ Texas San Antonio TX USA 78284 pt Physiol, San Antonio, TX 78284 USA
Titolo Testata:
NATURE
fascicolo: 6790, volume: 405, anno: 2000,
pagine: 1058 - 1062
SICI:
0028-0836(20000629)405:6790<1058:TTROTB>2.0.ZU;2-1
Fonte:
ISI
Lingua:
ENG
Soggetto:
POSITRON-EMISSION-TOMOGRAPHY; TASTE PERCEPTION; HYPOTHALAMUS; SATIATION; CORTEX; HUMANS; FOOD;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Life Sciences
Physical, Chemical & Earth Sciences
Citazioni:
30
Recensione:
Indirizzi per estratti:
Indirizzo: Liu, YJ Univ Florida, Dept Psychiat, 100 Newell Dr, Gainesville, FL 32610 USA Univ Florida 100 Newell Dr Gainesville FL USA 32610 , FL 32610 USA
Citazione:
Y.J. Liu et al., "The temporal response of the brain after eating revealed by functional MRI", NATURE, 405(6790), 2000, pp. 1058-1062

Abstract

After eating, the human brain senses a biochemical change and then signalssatiation, but precisely when this occurs is unknown. Even for well-established physiological systems like glucose-insulin regulation, the timing of interaction between hormonal processes and neural events is inferred mostlyfrom blood sampling(1-6). Recently, neuroimaging studies have provided in vivo information about the neuroanatomical correlates of the regulation of energy intake(7-10). Temporal orchestration of such systems, however, is crucial to the integration of neuronal and hormonal signals that control eating behaviour(11). The challenge of this functional magnetic resonance imaging study is to map not only where but also when the brain will respond after food ingestion. Here we use a temporal clustering analysis technique to demonstrate that eating-related neural activity peaks at two different timeswith distinct localization. Importantly, the differentiated responses are interacting with an internal signal, the plasma insulin. These results support the concept of temporal parcellation of brain activity(12), which reflects the different natures of stimuli and responses. Moreover, this study provides a neuroimaging basis for detecting dynamic processes without prior knowledge of their timing, such as the acute effects of medication and nutrition in the brain.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 28/11/20 alle ore 04:38:31