Visuomotor Coupling during Two-Handed Tasks: An Investigation of Bimanual and Intermanual Coordination

摘要

This study investigated previously observed differences in speed when completing a two-handed task usingeither the bimanual coordination mode (i.e., an individual completing a two-handed task) or the intermanualcoordination mode (i.e., two people completing a two-handed task). When comparing these coordinationmodes, various research domains have reported an intermanual “mode effect” of speed. Research suggeststhat the difference in performance may depend on fundamental characteristics of each coordination modethat facilitate or impede speed during two-handed tasks. To further investigate this intermanual speedadvantage, a task was constructed to exploit a hypothesized bimanual limitation that may underlie this modeeffect: bimanual visuomotor coupling. Results replicated the intermanual speed advantage and showed ahigher degree of visuomotor coupling during bimanual performance. Subsequent analyses suggest that speedduring two-handed tasks may be a function of visuomotor coupling, regardless of coordination mode.