Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
Why can't you tickle yourself?
Autore:
Blakemore, SJ; Wolpert, D; Frith, C;
Indirizzi:
Univ Coll London, Inst Neurol, Wellcome Dept Cognit Neurol, London WC1N 3BG, England Univ Coll London London England WC1N 3BG eurol, London WC1N 3BG, England Royal Edinburgh Hosp, Dept Psychiat, Edinburgh, Midlothian, Scotland RoyalEdinburgh Hosp Edinburgh Midlothian Scotland Midlothian, Scotland
Titolo Testata:
NEUROREPORT
fascicolo: 11, volume: 11, anno: 2000,
pagine: R11 - R16
SICI:
0959-4965(20000803)11:11<R11:WCYTY>2.0.ZU;2-7
Fonte:
ISI
Lingua:
ENG
Soggetto:
PRIMARY SOMATOSENSORY CORTEX; CEREBELLUM; MOVEMENT; SCHIZOPHRENIA; PERCEPTION; STIMULI;
Keywords:
fMRI; forward models; schizophrenia; tickling;
Tipo documento:
Review
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
46
Recensione:
Indirizzi per estratti:
Indirizzo: Blakemore, SJ Univ Coll London, Inst Neurol, Wellcome Dept Cognit Neurol, 12 Queen Sq, London WC1N 3BG, England Univ Coll London 12 Queen Sq London England WC1N 3BG ngland
Citazione:
S.J. Blakemore et al., "Why can't you tickle yourself?", NEUROREPORT, 11(11), 2000, pp. R11-R16

Abstract

It is well known that you cannot tickle yourself. Here, we discuss the proposal that such attenuation of self-produced tactile stimulation is due to the sensory predictions made by an internal forward model of the motor system. A forward model predicts the sensory consequences of a movement based on the motor command. When a movement is self-produced, its sensory consequences can be accurately predicted, and this prediction can be used to attenuate the sensory effects of the movement. Studies are reviewed that demonstrate that as the discrepancy between predicted and actual sensory feedback increases during self-produced tactile stimulation there is a concomitant decrease in the level of sensory attenuation and an increase in tickliness. Functional neuroimaging studies have demonstrated that this sensory attenuation might be mediated by somatosensory cortex and anterior cingulate cortex: these areas are activated less by a self-produced tactile stimulus than by the same stimulus when it is externally produced. Furthermore, evidence suggests that the cerebellum might be involved in generating the prediction of the sensory consequences of movement. Finally, recent evidence suggests that this predictive mechanism is abnormal in patients with auditory hallucinations and/or passivity experiences. NeuroReport 11:11-16 (C) 2000 Lippincott Williams & Wilkins.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 09/04/20 alle ore 13:09:32