Science Advances

Supplementary Materials

This PDF file includes:

  • Hand displacement: LMM fit and raw data
  • Power analysis
  • Motion velocity and normal force
  • Fig. S1. Convention for the angles of the hand trajectory in experiments 1 to 3.
  • Fig. S2. Experiment 1: The angular deviation of the hand trajectory as a function of the orientation of the grating in participants P01 to P10.
  • Fig. S3. Experiment 1B (lubricated surface): The angular deviation of the hand trajectory as a function of the orientation of the grating in participants P01 to P04.
  • Fig. S4. Experiment 2: The angular deviation of the hand trajectory as a function of the orientation of the grating in participants P01 to P11.
  • Fig. S5. Experiment 3: The angular deviation of the hand trajectory as a function of the orientation of the grating in participants P01 to P08.
  • Fig. S6. If participants were following the ridges, then the absolute error would have been larger for ±30° stimuli and smaller for ±60°, which was the opposite of what we found.
  • Fig. S7. Velocity and force profile in a representative participant.
  • Fig. S8. The distribution of peak velocity across trials and participants in experiment 1.
  • Fig. S9. The distribution of peak velocity across trials and participants in experiment 2 (with-glove/without-glove experiment).
  • Fig. S10. The distribution of peak velocity across trials and participants in experiment 3 (virtual target experiment).

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