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Titolo:
TOWARDS A FUNCTIONAL NEUROANATOMY OF CONSCIOUS PERCEPTION AND ITS MODULATION BY VOLITION - IMPLICATIONS OF HUMAN AUDITORY NEUROIMAGING STUDIES
Autore:
SILBERSWEIG DA; STERN E;
Indirizzi:
CORNELL UNIV,MED CTR,NEW YORK HOSP,FUNCT NEUROIMAGING LAB,POB 171,525E 68TH ST NEW YORK NY 10021
Titolo Testata:
Philosophical transactions-Royal Society of London. Biological sciences
fascicolo: 1377, volume: 353, anno: 1998,
pagine: 1883 - 1888
SICI:
0962-8436(1998)353:1377<1883:TAFNOC>2.0.ZU;2-I
Fonte:
ISI
Lingua:
ENG
Soggetto:
POSITRON-EMISSION-TOMOGRAPHY; CEREBRAL BLOOD-FLOW; IMAGE GENERATION; HUMAN CEREBELLUM; SINGLE SUBJECTS; BASAL GANGLIA; VISUAL-CORTEX; INNER SPEECH; SCHIZOPHRENIA; BRAIN;
Keywords:
FUNCTIONAL NEUROIMAGING; POSITRON EMISSION TOMOGRAPHY; AUDITION; CONSCIOUSNESS; VOLITION;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
57
Recensione:
Indirizzi per estratti:
Citazione:
D.A. Silbersweig e E. Stern, "TOWARDS A FUNCTIONAL NEUROANATOMY OF CONSCIOUS PERCEPTION AND ITS MODULATION BY VOLITION - IMPLICATIONS OF HUMAN AUDITORY NEUROIMAGING STUDIES", Philosophical transactions-Royal Society of London. Biological sciences, 353(1377), 1998, pp. 1883-1888

Abstract

Conscious sensory perception and its modulation by volition are integral to human mental life. Functional neuroimaging techniques provide adirect means of identifying and characterizing in vivo the systems-level patterns of brain activity associated with such mental functions. In a series of positron emission tomography activation experiments, weand our colleagues have examined a range of normal and abnormal auditory states that, when contrasted, provide dissociations relevant to the question of the neural substrates of sensory awareness. These dissociations include sensory awareness in the presence and absence of external sensory stimuli, the transition from sensory unawareness to awareness (or vice versa) in the presence of sensory stimuli, and sensory awareness with and without volition. The auditory states studied includehallucinations, mental imagery, cortical deafness modulated by attention, and hearing modulated by sedation. The results of these studies highlight the distributed nature of the functional neuroanatomy that issufficient, if not necessary, for sensory awareness. The probable roles of unimodal association (as compared with primary) cortices, heteromodal cortices, limbic/paralimbic regions and subcortical structures (such as the thalamus) are discussed. In addition, interactions betweenpre- and postrolandic regions are examined in the context of top-down, volitional modulation of sensory awareness.

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Documento generato il 21/01/20 alle ore 06:51:50