TY - GEN
T1 - Multi-digit position and force coordination in three- and four-digit grasping
AU - Naceri, Abdeldjallil
AU - Moscatelli, Alessandro
AU - Santello, Marco
AU - Ernst, Marc O.
N1 - Funding Information:
This work was partially supported by a National Science Foundation Grant BCS-1153034 (MS), by the European Commission under IP grant no. 248587 “THE Hand Embodied”, by the European Commission under IP grant no. 601165 “WEARable HAPtics” and by the DFG Center of Excellence EXC 277: Cognitive Interaction Technology (CITEC).
Publisher Copyright:
© Springer-Verlag Berlin Heidelberg 2014.
PY - 2014
Y1 - 2014
N2 - In this paper, we investigate the redundancy problem by examining how humans control grasping of a hand-held object using three- and four-digits in response to external perturbations. Our results revealed a similar variability in digits’ initial placements when grasping with three- and four-digits. Moreover, the distribution of digit normal forces were modulated depending on the number of digits used, their locations, and the type of the external perturbations. Our results suggest that the redundancy problem was addressed by the central nervous system in a similar fashion on a trial-to-trial basis in terms of digits’ initial placements, but differently in terms of digits normal force distribution that was controlled online depending on the number of digits actively involved in the grasp.
AB - In this paper, we investigate the redundancy problem by examining how humans control grasping of a hand-held object using three- and four-digits in response to external perturbations. Our results revealed a similar variability in digits’ initial placements when grasping with three- and four-digits. Moreover, the distribution of digit normal forces were modulated depending on the number of digits used, their locations, and the type of the external perturbations. Our results suggest that the redundancy problem was addressed by the central nervous system in a similar fashion on a trial-to-trial basis in terms of digits’ initial placements, but differently in terms of digits normal force distribution that was controlled online depending on the number of digits actively involved in the grasp.
KW - Redundancy problem
KW - Threeand four-digits grasping
KW - Unconstrained grasping
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U2 - 10.1007/978-3-662-44193-0_14
DO - 10.1007/978-3-662-44193-0_14
M3 - Conference contribution
AN - SCOPUS:84910136999
T3 - Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
SP - 101
EP - 108
BT - Haptics
A2 - Duriez, Christian
A2 - Duriez, Christian
A2 - Auvray, Malika
A2 - Auvray, Malika
PB - Springer Verlag
T2 - 9th International Conference on Haptics: Neuroscience, Devices, Modeling, and Applications, EuroHaptics 2014
Y2 - 24 June 2014 through 26 June 2014
ER -