Coordinated Flexibility: How Initial Gaze Position Modulates Eye-Hand Coordination and Reaching

Autor/inn/en	Adam, Jos J.; Buetti, Simona; Kerzel, Dirk
Titel	Coordinated Flexibility: How Initial Gaze Position Modulates Eye-Hand Coordination and Reaching
Quelle	In: Journal of Experimental Psychology: Human Perception and Performance, 38 (2012) 4, S.891-901 (11 Seiten) PDF als Volltext Verfügbarkeit
Sprache	englisch
Dokumenttyp	gedruckt; online; Zeitschriftenaufsatz
ISSN	0096-1523
DOI	10.1037/a0027592
Schlagwörter	Eye Movements; Nonverbal Communication; Psychomotor Skills; Perceptual Motor Coordination; Role; Human Body; Correlation; Brain Hemisphere Functions + Suchen Sie Ihr Suchwort? Augenbewegung; Non-verbal communication; Nonverbale Kommunikation; Psychomotorische Aktivität; Körperkoordination; Rollen; Menschlicher Körper; Korrelation
Abstract	Reaching to targets in space requires the coordination of eye and hand movements. In two experiments, we recorded eye and hand kinematics to examine the role of gaze position at target onset on eye-hand coordination and reaching performance. Experiment 1 showed that with eyes and hand aligned on the same peripheral start location, time lags between eye and hand onsets were small and initiation times were substantially correlated, suggesting simultaneous control and tight eye-hand coupling. With eyes and hand departing from different start locations (gaze aligned with the center of the range of possible target positions), time lags between eye and hand onsets were large and initiation times were largely uncorrelated, suggesting independent control and decoupling of eye and hand movements. Furthermore, initial gaze position strongly mediated manual reaching performance indexed by increments in movement time as a function of target distance. Experiment 2 confirmed the impact of target foveation in modulating the effect of target distance on movement time. Our findings reveal the operation of an overarching, flexible neural control system that tunes the operation and cooperation of saccadic and manual control systems depending on where the eyes look at target onset. (Contains 5 figures.) (As Provided).
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Erfasst von	ERIC (Education Resources Information Center), Washington, DC
Update	2017/4/10