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Titolo:
An 'automatic pilot' for the hand in human posterior parietal cortex: toward reinterpreting optic ataxia
Autore:
Pisella, L; Grea, H; Tilikete, C; Vighetto, A; Desmurget, M; Rode, G; Boisson, D; Rossetti, Y;
Indirizzi:
Espace & Act, INSERM, U534, D-69676 Bonn, Germany Espace & Act Bonn Germany D-69676 t, INSERM, U534, D-69676 Bonn, Germany Univ Lyon 1, F-69365 Lyon, France Univ Lyon 1 Lyon France F-69365Univ Lyon 1, F-69365 Lyon, France Hospices Civils Lyon, F-69003 Lyon, France Hospices Civils Lyon Lyon France F-69003 vils Lyon, F-69003 Lyon, France
Titolo Testata:
NATURE NEUROSCIENCE
fascicolo: 7, volume: 3, anno: 2000,
pagine: 729 - 736
SICI:
1097-6256(200007)3:7<729:A'PFTH>2.0.ZU;2-C
Fonte:
ISI
Lingua:
ENG
Soggetto:
REACHING MOVEMENTS; PREHENSION MOVEMENTS; UTILIZATION BEHAVIOR; GRASPING MOVEMENTS; UNILATERAL NEGLECT; MOTOR-RESPONSES; VISUAL CONTROL; FRONTAL LOBES; TARGET; MECHANISMS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
50
Recensione:
Indirizzi per estratti:
Indirizzo: Rossetti, Y Espace & Act, INSERM, U534, 16 Ave Lepine,CP 13, D-69676 Bonn,Germany Espace & Act 16 Ave Lepine,CP 13 Bonn Germany D-69676 Germany
Citazione:
L. Pisella et al., "An 'automatic pilot' for the hand in human posterior parietal cortex: toward reinterpreting optic ataxia", NAT NEUROSC, 3(7), 2000, pp. 729-736

Abstract

We designed a protocol distinguishing between automatic and intentional motor reactions to changes in target location triggered at movement onset. Inresponse to target jumps, but not to a similar change cued by a color switch, normal subjects often could not avoid automatically correcting fast aiming movements. This suggests that an 'automatic pilot' relying on spatial vision drives fast corrective arm movements that can escape intentional control. in a patient with a bilateral posterior parietal cortex (PPC) lesion, motor corrections could only be stow and deliberate. We propose that 'on-line' control is the most specific function of the PPC and that optic ataxia could result from a disruption of automatic hand guidance.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 08/04/20 alle ore 22:34:24