Fig 1.
Graphical representation of the monkeys' postural conditions.
Schematic drawing of the reach-to-grasp movement performed by the monkey (from right to left). Marker positions upon the hand are illustrated in the callout.
Fig 2.
Superimposition of the velocity and grip profiles for the snatching and the unconstrained conditions.
Arrows indicate the correspondence between the time at which the maximum grip aperture and the beginning of the low velocity phase occur for an individual movement for the snatching condition. Dashed lines = velocity profiles. Solid Lines = grip profiles.
Fig 3.
Superimposition of the velocity profiles for the snatching and the unconstrained conditions for the six individuals considered.
This figure well represents how stereotypical this type of movements was with specific reference to the break point occurring along the deceleration phase. The arrow indicates the beginning of the break point.
Table 1.
Average SD (Variable Error) in mm in wrist Y-Position at Maximum Aperture and Pre-Contact for each subject.
The corresponding mean grip aperture in millimeters is reported in parentheses.
Table 2.
Significant values for the considered correlation for each subject.