Abstract
During pinch grip we partition the vertical tangential forces at the digits according to the friction at the grip surfaces, and the mass distribution of the object. However, we cannot predictively partition the vertical forces to adjust to new frictional conditions after viewing a 180-deg rotation of an object with different textures at each grip surface. Hence, the processes that lead to predictive force partitioning may not access object representations, thereby suggesting that these processes are digit-specific. If this is true, then we should fail to predictively partition our fingertip forces when we rotate our hand. We tested this prediction by comparing the effects of object rotation with hand rotation for repeated lifts of an object that had one slippery grip surface and one rough grip surface. Subjects did not predictively redistribute the vertical tangential forces upon grasping the rotated object. Following object rotation, the vertical tangential force trajectories during the first 100 ms after contact indicated that 12/15 subjects failed to anticipate the reversed digit-friction relationships. All subjects appropriately partitioned the vertical tangential forces between the digits by the second lift after object rotation, confirming previous reports that sensory signals update the memory associated with lifting the object. In contrast, after hand rotation, 13/15 subjects anticipated the new digit-friction relationships and upon grasping the object immediately generated a steep rise in the vertical force trajectory at the rough surface. They also delayed the initial rise in vertical tangential force at the digit encountering the low-friction surface by approximately 65 ms. Thus, anticipatory partitioning of vertical fingertip forces is not strictly digit-specific. Internally driven motor plans can access the relevant memories or internal models for predictively partitioning the vertical tangential forces. It is not clear if this process involves rotating internal representations of fingertip force directly, or if the forces are derived after internally rotating a representation of the object. In contrast to the robust effects of vision on reach kinematics, or on wrist and finger configuration, visual signals about object rotation and orientation apparently do not influence vertical tangential fingertip forces.
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References
Arbib M (1981) Perceptual structures and distributed motor control. In: Brooks V (ed) Handbook of physiology: section 1. The Nervous System, Volume II, Motor Control, Part II. American Physiological Society, Bethesda, MD, pp 1449–1480
Cole K, Rotella D (2002) Old age impairs the use of arbitrary visual cues for predictive control of fingertip forces during grasp. Exp Brain Res 143:35–41
Cole K, Rotella D, Harper J (1998) Tactile impairments cannot explain the effect of age on a grasp and lift task. Exp Brain Res 121:263–269
Cole K, Rotella D, Harper J (1999) Mechanisms for age-related changes of fingertip forces during precision gripping and lifting in adults. J Neurosci 19:3238–3247
Edin BB, Westling G, Johansson RS (1992) Independent control of human finger-tip forces at individual digits during precision lifting. J Physiol 450:547–564
Gentile A (1998) Implicit and explicit processes during acquisition of functional skills. Scand J Occup Ther 5:7–17
Georgopoulos A, Massey J (1987) Cognitive spatial-motor processes. 1. The making of movements at various angles from a stimulus direction. Exp Brain Res 65:361–370
Georgopoulos A, Lurito J, Petrides M, Schwartz A, Massey J (1989) Mental rotation of the neuronal population vector. Science 243:234–236
Gordon A, Forssberg H, Johansson R, Westling G (1991a) Integration of sensory information during the programming of precision grip: comments on the contributions of size cues. Exp Brain Res 85:226–229
Gordon A, Forssberg H, Johansson R, Westling G (1991b) Visual size cues in the programming of manipulative forces during precision grip. Exp Brain Res 83:477–482
Gordon A, Westling G, Cole K, Johansson R (1993) Memory representations underlying motor commands used during manipulation of common and novel objects. J Neurophysiol 69:1789–1796
Gordon A, Forssberg H, Iwasaki N (1994) Formation and lateralization of internal representations underlying motor commands during precision grip. Neurophychologia 32:555–568
Haffenden AM, Goodale MA (2002) Learned perceptual associations influence visuomotor programming under limited conditions: cues as surface patterns. Exp Brain Res 147:473–484
Iberall T, Arbib MA (1990) Schemas for the control of hand movements: an essay on cortical localization. In: Goodale MA (ed) Vision and action: the control of grasping. Ablex, Norwood, NJ, pp 163–180
Iberall T, Binhanm G, Arbib MA (1986) Opposition space as a structuring concept for the analysis of skilled hand movements. Springer, Berlin, Heidelberg, New York
Jeannerod M (1986) The formation of finger grip during prehension. A cortically mediated visuomotor pattern. Behav Brain Res 19:99–116
Jeannerod M, Decety J (1990) The accuracy of visuomotor transformation. An investigation into the mechanisms of visual recognition of objects. Ablex Publishing Corporation, NJ
Jeannerod M, Arbib M, Rizzolatti G, Sakata H (1995) Grasping objects: the cortical mechanisms of visuomotor transformation. TINS 18:314–320
Jenmalm P, Johansson R (1997) Visual and somatosensory information about object shape control manipulative fingertip forces. J Neurosci 17:4486–4499
Johansson RS, Westling G (1984) Roles of glabrous skin receptors and sensorimotor memory in automatic control of precision grip when lifting rougher or more slippery objects. Exp Brain Res 56:550–564
Karnath H, Ferber S, Bulthoff H (2000) Neuronal representation of object orientation. Neurophychologia 38:1235–1241
Kawato M (1999) Internal models for motor control and trajectory planning. Curr Opinion in Neurobiol 9:718–727
Krouchev N, Kalaska J (2003) Context-dependent anticipation of different task dynamics: rapid recall of appropriate motor skills using visual cues.
MacKenzie C, Iberall T (1994) The grasping hand. North-Holland, New York
Murata A, Gallese V, Luppino G, Kaseda M, Sakata H (2000) Selectivity for the shape, size and orientation of objects for grasping in neurons of the monkey parietal area AIP. J Neurophysiol 83:2580–2601
Nakamura T, Kuroda T, Wakita M, Kusunoki M, Kato A, Mikami A, Sakata H, Itoh K (2001) From three-dimensional space vision to prehensile hand movements: the lateral intraparietal area links the area V3A and the anterior intraparietal area in macaques. J Neurosci 21:8174–8187
Parsons L, Gabrieli J, Phelps E, Gazzaniga M (1998) Cerebrally lateralized mental representations of hand shape and movement. J Neurosci 18:6539–6548
Quaney B, Rotella D, Peterson C, Cole KJ (2003) ‘Sensorimotor memory’ for fingertip forces: evidence for a task-independent motor memory. J Neurosci 23:1981–1986
Rizzolatti G, Fogassi L, Gallese V (2002) Motor and cognitive functions of the ventral premotor cortex. Curr Opin Neurobiol 12:149–154
Sakata H, Taira M, Kusunoki M, Tsutsui K, Tanaka Y, Shein WN, Miyashita Y (1999) Neural representation of three-dimensional features of manipulation objects with stereopsis. Exp Brain Res 128:160–169
Salimi I, Hollender I, Frazier W, Gordon A (2000) Specificity of internal representations underlying grasp. J Neurophysiol 84:2390–2397
Salimi I, Frazier W, Reilmann R, Gordon AM (2003) Selective use of visual information signaling objects’ center of mass for anticipatory control of manipulative fingertip forces. Exp Brain Res 150:9–18
Sinnaeve A, Dubrowski A, Carnahan H (2002) Evidence for the use of both iconic and long term memory systems for friction when grasping. Society Neurosci Abstract
Wada Y, Kawabata Y, Kotosaka S, Yamamoto K, Kitazawa S, Kawato M (2003) Acquisition and contextual switching of multiple internal models for different viscous force fields. Neurosci Res 46:319–331
Zatsiorsky VM, Gao F, Latash ML (2003) Prehension synergies: effects of object geometry and prescribed torques. Exp Brain Res 148:77–87
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This research was supported by a doctoral scholarship to the first author from the Foundation for Physical Therapy, Inc.
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Quaney, B.M., Cole, K.J. Distributing vertical forces between the digits during gripping and lifting: the effects of rotating the hand versus rotating the object. Exp Brain Res 155, 145–155 (2004). https://doi.org/10.1007/s00221-003-1711-2
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DOI: https://doi.org/10.1007/s00221-003-1711-2