Usually, our bodily movements are performed against gravity. Most studies using a force field have focused on adaptation processes to force applied in the horizontal plane, which is novel to us, but not to force in the gravitational direction. The present study investigated the immediate effects (aftereffects) of a force toward the gravitational direction on the kinematics of reach-to-grasp movements as well as short-term adaptation to the force, simply by adding a weight to participants’ forearm. Healthy young adults performed blocks of 10 reach-to-grasp movements under three weight conditions; as the weights were changed between blocks, the participants experienced weight changes ranging from − 200 to + 200 g. We obtained three main results; first, the height of movement trajectory (trajectory height) was remarkably higher immediately after the forearm weight changed to lighter than after the weight changed to heavier, suggesting that participants planed the trajectory height with the same muscle efforts as in the previous trial. Second, the trajectory height at the end of the block became higher only in 200 g condition, indicating that the participants could not achieve same trajectory height as that without any weight load, at least in ten trials of adaptation period to the 200 g weight load. Third, the coordination between reach and grasp components was preserved immediately after forearm-weight changes. These findings may contribute to further understand how we perform adaptive reach-to-grasp movements with frequent weight changes that are inevitable in everyday life.
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Alturkistani R et al (2020) Affordable passive 3D-printed prosthesis for persons with partial hand amputation. Prosthet Orthot Int 44:92–98. https://doi.org/10.1177/0309364620905220
Biddiss EA, Chau TT (2007) Upper limb prosthesis use and abandonment: a survey of the last 25 years. Prosthet Orthot Int 31:236–257. https://doi.org/10.1080/03093640600994581
Bongers RM (2010) Do changes in movements after tool use depend on body schema or motor learning? Haptics: Generating And Perceiving Tangible Sensations. Pt Ii Proc 6192:271–276
Bootsma RJ, Marteniuk RG, MacKenzie CL, Zaal FT (1994) The speed-accuracy trade-off in manual prehension: effects of movement amplitude, object size and object width on kinematic characteristics. Exp Brain Res 98:535–541
Bouwsema H, van der Sluis CK, Bongers RM (2010) Movement characteristics of upper extremity prostheses during basic goal-directed tasks. Clin Biomech 25:523–529. https://doi.org/10.1016/j.clinbiomech.2010.02.011
Bouwsema H, van der Sluis CK, Bongers RM (2014) Effect of feedback during virtual training of grip force control with a myoelectric prosthesis. PLoS ONE 9:15. https://doi.org/10.1371/journal.pone.0098301
Burkitt JJ, Staite V, Yeung A, Elliott D, Lyons JL (2015) Effector mass and trajectory optimization in the online regulation of goal-directed movement. Exp Brain Res 233:1097–1107. https://doi.org/10.1007/s00221-014-4191-7
Cunningham HA (1989) Aiming error under transformed spatial mappings suggests a structure for visual motor maps. J Exp Psychol-Hum Percept Perform 15:493–506. https://doi.org/10.1037/0096-1522.214.171.1243
Fischinger D, Weiss A, Vincze M (2015) Learning grasps with topographic features. Int J Robot Res 34:1167–1194. https://doi.org/10.1177/0278364915577105
Fitts PM (1954) The information capacity of the human motor system in controlling the amplitude of movement. J Exp Psychol 47:381
Gentilucci M, Roy AC, Stefanini S (2004) Grasping an object naturally or with a tool: are these tasks guided by a common motor representation? Exp Brain Res 157:496–506. https://doi.org/10.1007/s00221-004-1863-8
Haggard P, Wing A (1995) Coordinated responses following mechanical perturbation of the arm during prehension. Exp Brain Res 102:483–494
Hamilton AFdC, Wolpert DM (2002) Controlling the statistics of action: obstacle avoidance. J Neurophysiol 87:2434–2440
Hamilton AFD, Jones KE, Wolpert DM (2004) The scaling of motor noise with muscle strength and motor unit number in humans. Exp Brain Res 157:417–430. https://doi.org/10.1007/s00221-004-1856-7
Harris CM, Wolpert DM (1998) Signal-dependent noise determines motor planning. Nature 394:780–784. https://doi.org/10.1038/29528
Imamizu H, Kawato M (2008) Neural correlates of predictive and postdictive switching mechanisms for internal models. J Neurosci 28:10751–10765
Itaguchi Y (2020) Toward natural grasping with a tool: effects of practice and required accuracy on the kinematics of tool-use grasping. J Neurophysiol 123:2024–2036
Itaguchi Y (2021) Size perception bias and reach-to-grasp kinematics: an exploratory study on the virtual hand with a consumer immersive virtual-reality device. Front Virtual Real. https://doi.org/10.3389/frvir.2021.712378
Itaguchi Y, Fukuzawa K (2014) Hand-use and tool-use in grasping control. Exp Brain Res 232:3613–3622. https://doi.org/10.1007/s00221-014-4053-3
Itaguchi Y, Fukuzawa K (2019) Adaptive changes in automatic motor responses based on acquired visuomotor correspondence. Exp Brain Res 237:147–159
Izawa J, Rane T, Donchin O, Shadmehr R (2008) Motor adaptation as a process of reoptimization. J Neurosci 28:2883–2891. https://doi.org/10.1523/jneurosci.5359-07.2008
Jakobson LS, Goodale MA (1991) Factors affecting higher-order movement planning: a kinematic analysis of human prehension. Exp Brain Res 86:199–208
Jeannerod M (1984) The timing of natural prehension movements. J Mot Behav 16:235–254
Jeannerod M, Michel F, Prablanc C (1984) The control of hand movements in a case of hemianaesthesia following a parietal lesion. Brain 107:899–920
Jones KE, Hamilton AFD, Wolpert DM (2002) Sources of signal-dependent noise during isometric force production. J Neurophysiol 88:1533–1544. https://doi.org/10.1152/jn.2002.88.3.1533
Jovanovic B, Schwarzer G (2017) The development of the grasp height effect as a measure of efficient action planning in children. J Exp Child Psychol 153:74–82. https://doi.org/10.1016/j.jecp.2016.09.002
Kerver N, van Twillert S, Maas B, van der Sluis CK (2020) User-relevant factors determining prosthesis choice in persons with major unilateral upper limb defects: a meta-synthesis of qualitative literature and focus group results. PLoS ONE 15:25. https://doi.org/10.1371/journal.pone.0234342
Kim S, Ogawa K, Lv J, Schweighofer N, Imamizu H (2015) Neural substrates related to motor memory with multiple timescales in sensorimotor adaptation. PLoS Biol 13:e1002312
Koprnicky J, Najman P, Safka J, Ieee (2017) 3D printed bionic prosthetic hands. In: 2017 Ieee International Workshop of Electronics, Control, Measurement, Signals and Their Application to Mechatronics (Ecmsm), p 6
Krakauer JW (2009) Motor learning and consolidation: the case of visuomotor rotation. Adv Exp Med Biol 629:405–421. https://doi.org/10.1007/978-0-387-77064-2_21
Krakauer JW, Pine ZM, Ghilardi MF, Ghez C (2000) Learning of visuomotor transformations for vectorial planning of reaching trajectories. J Neurosci 20:8916–8924. https://doi.org/10.1523/jneurosci.20-23-08916.2000
Li Z, Milutinovic D, Rosen J (2017) From reaching to reach-to-grasp: the arm posture difference and its implications on human motion control strategy. Exp Brain Res 235:1627–1642. https://doi.org/10.1007/s00221-017-4890-y
Maat B, Smit G, Plettenburg D, Breedveld P (2018) Passive prosthetic hands and tools: a literature review. Prosthet Orthot Int 42:66–74. https://doi.org/10.1177/0309364617691622
Malfait N, Shiller DM, Ostry DJ (2002) Transfer of motor learning across arm configurations. J Neurosci 22:9656–9660
Marteniuk RG, Leavitt JL, Mackenzie CL, Athenes S (1990) Functional-relationships between grasp and transport components in a prehension task. Hum Mov Sci 9:149–176. https://doi.org/10.1016/0167-9457(90)90025-9
Miyamoto H, Nakano E, Wolpert DM, Kawato M (2004) TOPS (Task Optimization in the Presence of Signal-Dependent Noise) model. Syst Comput Jpn 35:48–58
Ostlie K, Magnus P, Skjeldal OH, Garfelt B, Tambs K (2011) Mental health and satisfaction with life among upper limb amputees: a Norwegian population-based survey comparing adult acquired major upper limb amputees with a control group. Disabil Rehabil 33:1594–1607. https://doi.org/10.3109/09638288.2010.540293
Osu R, Hirai S, Yoshioka T, Kawato M (2004) Random presentation enables subjects to adapt to two opposing forces on the hand. Nat Neurosci 7:111–112
Paulignan Y, Mackenzie C, Marteniuk R, Jeannerod M (1991) Selective perturbation of visual input during prehension movements. 1. The effects of changing object position. Exp Brain Res 83:502–512
Rand MK, Shimansky Y, Stelmach GE, Bloedel JR (2004) Adaptation of reach-to-grasp movement in response to force perturbations. Exp Brain Res 154:50–65. https://doi.org/10.1007/s00221-003-1637-8
Rocha N, da Costa CSN, Savelsbergh G, Tudella E (2009) The effect of additional weight load on infant reaching. Infant Behav Dev 32:234–237. https://doi.org/10.1016/j.infbeh.2008.12.012
Schot WD, Brenner E, Smeets JBJ (2017) UNUSUAL prism adaptation reveals how grasping is controlled. Elife 6:13. https://doi.org/10.7554/eLife.21440
Shadmehr R, Mussa-Ivaldi FA (1994) Adaptive representation of dynamics during learning of a motor task. J Neurosci 14:3208–3224
Ten Kate J, Smit G, Breedveld P (2017) 3D-printed upper limb prostheses: a review. Disabil Rehabilit-Assist Technol 12:300–314. https://doi.org/10.1080/17483107.2016.1253117
Tipper SP, Howard LA, Jackson SR (1997) Selective reaching to grasp: Evidence for distractor interference effects. Vis Cogn 4:1–38. https://doi.org/10.1080/713756749
Tretriluxana J, Gordon J, Winstein CJ (2008) Manual asymmetries in grasp pre-shaping and transport-grasp coordination. Exp Brain Res 188:305–315. https://doi.org/10.1007/s00221-008-1364-2
Wing AM, Fraser C (1983) The contribution of the thumb to reaching movements. Q J Exp Psychol Sect A 35:297–309
Wing AM, Turton A, Fraser C (1986) Grasp size and accuracy of approach in reaching. J Mot Behav 18:245–260
Yamada C, Itaguchi Y, Fukuzawa K (2019) Effects of the amount of practice and time interval between practice sessions on the retention of internal models. PLoS ONE. https://doi.org/10.1371/journal.pone.0215331
Yan X, Wang QN, Lu ZC, Stevenson IH, Kording K, Wei KL (2013) Generalization of unconstrained reaching with hand-weight changes. J Neurophysiol 109:137–146. https://doi.org/10.1152/jn.00498.2012
This work was supported by the Japan Society for Promotion of Science, KAKENHI (grant numbers 17H06345 and 20H01785).
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This study design was approved by the ethics committee of Shizuoka University (No. 19-45).
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Ando, L., Itaguchi, Y. The heavier the arm, the higher the action: the effects of forearm-weight changes on reach-to-grasp movements. Exp Brain Res 240, 1515–1528 (2022). https://doi.org/10.1007/s00221-022-06350-6