Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
Integration of visual and somatosensory target information in goal-directed eye and arm movements
Autore:
Neggers, SFW; Bekkering, H;
Indirizzi:
Max Planck Inst Psychol Res, Dept Cognit & Act, D-80802 Munich, Germany Max Planck Inst Psychol Res Munich Germany D-80802 80802 Munich, Germany
Titolo Testata:
EXPERIMENTAL BRAIN RESEARCH
fascicolo: 1, volume: 125, anno: 1999,
pagine: 97 - 107
SICI:
0014-4819(199903)125:1<97:IOVAST>2.0.ZU;2-R
Fonte:
ISI
Lingua:
ENG
Soggetto:
PRIMATE SUPERIOR COLLICULUS; SACCADIC EYE; HAND MOVEMENTS; POSITION; COORDINATION; PERFORMANCE; STIMULI; MONKEY; LIMB;
Keywords:
saccade; hand movement; sensorimotor integration; reaction time; accuracy;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
30
Recensione:
Indirizzi per estratti:
Indirizzo: Neggers, SFW Maxch,anck Inst Psychol Res, Dept Cognit & Act, Leopoldstr 24, D-80802 Muni Max Planck Inst Psychol Res Leopoldstr 24 Munich Germany D-80802
Citazione:
S.F.W. Neggers e H. Bekkering, "Integration of visual and somatosensory target information in goal-directed eye and arm movements", EXP BRAIN R, 125(1), 1999, pp. 97-107

Abstract

In this study, we compared separate and coordinated eye and hand movementstowards visual or somatosensory target stimuli in a dark room, where no visual position information about the hand could be obtained. Experiment 1 showed that saccadic reaction times (RTs) were longer when directed to somatosensory targets than when directed to visual targets in both single- and dual-task conditions. However, for hand movements, this pattern was only found in the dual-task condition and not in the single-task condition. Experiment 1 also showed that correlations between saccadic and hand RTs were significantly higher when directed towards somatosensory targets than when directed towards visual targets. Importantly, experiment 2 indicated that this was not caused by differences in processing times at a perceptual level. Furthermore, hand-pointing accuracy was found to be higher when subjects had to move their eyes as well (dual task) compared to a single-task hand movement. However, this effect was more pronounced for movements to visual targets than to somatosensory targets. A schematic model of sensorimotor transformations for saccadic eye and goal-directed hand movements is proposed and possible shared mechanisms of the two motor systems are discussed.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 09/08/20 alle ore 23:31:24