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NYU Abu Dhabi researchers find grasping motions guided by visuo-haptic signals are most effective

Thursday, March 7, 2019/ Editor -  

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The research study has been featured in the journal Nature: Scientific Reports

Abu Dhabi – March 7, 2019:  NYU Abu Dhabi researchers have found that the availability of both visual and haptic information for a target object significantly improves reach-to-grasp actions, demonstrating that the nervous system utilizes both types of information to optimize movement execution. The findings are featured in the journal Nature: Scientific Reports.

NYU Abu Dhabi Assistant Professor of Psychology Robert Volcic and Postdoctoral Associate Ivan Camponogara compared participants’ grasping movements towards an object sensed through visual, haptic, or visuo-haptic signals using special sensors capable of measuring hand and fingers movement in real-time. 

When movements were based on haptic information only, hand pre-shaping was initiated earlier, fingers closed on the object more slowly, and the final phase was more cautious compared to movements based on only visual information.

Instead, the simultaneous availability of vision and haptics led to faster movements and to an overall decrease of the grip aperture. 

“Our findings also show that each modality contributes to a different extent in different phases of the movement, with haptics being more crucial in the initial phases and vision being more important for the final on-line control,” said Volcic.

“We confirmed that vision and haptics can be flexibly combined to optimize the execution of grasping movement.”


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