Fig. 1: Experimental set-up and motor performance.
From: Hypergravity is more challenging than microgravity for the human sensorimotor system
A Global view of the experimental set-up including the kinematic markers, the EMG electrodes, the push-button to standardize the fingertip start position and the electromagnet to unexpectedly perturb reach movement initiation (20% of trials). Reaching movements were performed toward either a (B) close target or (C) far target during parabolic flights, which allowed a modification of the gravitational environment (D). E Endpoint errors as a function of the gravitational environment. The illuminated target is represented as a dotted circle (diameter: 4 cm). Motor performance was impaired in hypergravity (1.8g), as shown by (F) endpoints errors on the Z axis and (G) success rate in each gravitational environment. Error bars represent standard deviation. **P < 0.01.
