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Fig. 2 | Journal of NeuroEngineering and Rehabilitation

Fig. 2

From: Continuous supplementary tactile feedback can be applied (and then removed) to enhance precision manipulation

Fig. 2

The experimental setup, where the subject sits at a desk and performs a virtual reality pick-and-lift task while wearing the Haptic Thimble device (the position of the participant’s arm is exaggerated for clarity purpose). In A) a typical successful trial is shown, where the object is approached and lifted above the target line (black solid line), while the contact force exerted (purple solid line) is below the breaking threshold (red dashed line). Vertical dashed lines represent the separations between the phases of the grasp. In B) the four experimental conditions are exemplified: for each of them, a familiarization (Fam) phase precedes the execution of 20 trials of the task, while a distinct tactile feedback is provided. A questionnaire (Q) follows each condition.

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