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How Variability and Effort Determine Coordination at Large Forces

Fig 1

Experimental setup: participants pressed with a finger (index or little) of both left and right hands on isometric force transducers.

The subjects were required to match the goal force level (a horizontal line in the central bar) as accurately as possible with the summation of each finger’s force level (summation of the force levels is given by the LEDs in the central bar and the individuals’ force levels of the left and right hand are given by the left and right bars, respectively).

Fig 1