Abstract
Haptic information is critically important in complex sensory-motor tasks such as manipulating objects. Its comparable importance in spatial orientation is only beginning to be recognized. We have shown that postural sway in humans is significantly reduced by lightly touching a stable surface with a fingertip at contact force levels far below those physically necessary to stabilize the body. To investigate further the functional relationship between contact forces at the hand and postural equilibrium, we had subjects stand in the tandem Romberg stance while being allowed physically supportive (force contact) and non-physically supportive (touch contact) amounts of index fingertip force on surfaces with different frictional characteristics. Mean sway amplitude (MSA) was reduced by over 50% with both touch and force contact of the fingertip, compared to standing without fingertip contact. No differences in MSA were observed when touching rough or slippery surfaces. The amplitude of EMG activity in the peroneal muscles and the timing relationships between fingertip forces, body sway and EMG activity suggested that with touch contact of the finger or with force contact on a slippery surface, long-loop “reflexes” involving postural muscles were stabilizing sway. With force contact of the fingertip on a rough surface, MSA reduction was achieved primarily through physical support of the body. This pattern of results indicates that light touch contact cues from the fingertip in conjunction with proprioceptive signals about arm configuration are providing information about body sway that can be used to reduce MSA through postural muscle activation.
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References
Burgess PR, Wei JY, Clark FJ, Simon J (1982) Signaling of kinesthetic information by peripheral sensory receptors. Annu Rev Neurosci 5: 171–187
Diener HC, Dichgans J (1986) Long loop reflexes and posture. In: Bles W, Brandt T (eds) Disorders of posture and gait. Elsevier North Holland, Amsterdam pp 41–51
Diener HC, Dichgans J, Guschlbauer B, Mau H (1984) The significance of proprioception on postural stabilization as assessed by ischemia. Brain Res 296: 103–109
Dijkstra TMH, Schöner GS, Gielen CCAM (1994) Temporal stability of the action-perception cycle for postural control in a moving environment. Exp Brain Res 97: 477–486
Farmer LW (1980) Mobility devices. In: Welsh RL, Blasch BB (eds) Foundations of orientation and mobility. American Foundation for the Blind, New York, pp 357–412
Goodwin GM, McCloskey DI, Matthews PBC (1972) The contribution of muscle afferents to kinaesthesia shown by vibration-induced illusions of movement and by the effects of paralysing joint afferents. Brain 95: 705–748
Gordon G (1978) Active touch. The mechanism of recognition of objects by manipulation: a multi-disciplinary approach. Pergamon, Oxford
Holden M, Ventura J, Lackner JR (1987) Influence of light touch from the hand on postural sway. Soc Neurosci Abstr 13: 348
Holden M, Ventura J, Lackner JR (1994) Stabilization of posture by precision contact of the index finger. J Vestib Res 4: 285–301
Horak FB, Nashner LM (1986) Central programming of postural movements: adaptation to altered support-surface configurations. J Neurophysiol 55: 1369–1381
Jeka JJ, Lackner JR (1993) Fingertip contact with rough and slippery surfaces reduces postural sway. Soc Neurosci Abstr 19: 150
Jeka JJ, Lackner JR (1994) Fingertip contact influences human postural control. Exp Brain Res 100: 495–502
Jeka JJ, Easton RD, Benzten BL, Lackner JR (1995) Haptic cues for postural control in sighted and blind individuals. Percept Psychophys (in press)
Johansson RS (1991) How is grasping modified by somatosensory input? In: Humphrey DR, Freund H-J (eds) Motor control: concepts and issues. Wiley, New York, pp 331–355
Johansson RS, Vallbo ÅB (1979) Tactile sensibility in the human hand: relative and absolute densities of four types of mechanoreceptive units in glabrous skin. J Physiol (Lond) 286: 283–300
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
Johnson KO, Hsiao SS (1992) Neural mechanisms of tactual form and texture perception. Annu Rev Neurosci 15: 227–250
Kirk RE (1982) Experimental design: procedures for the behavioral sciences. Brooks/Cole, Belmont, Calif
Klatzky RL, Lederman S, Reed C (1987) There's more to touch than meets the eye: the salience of object attributes for haptics with and without vision. J Exp Psychol Gen 116: 356–369
Lackner JR (1988) Some proprioceptive influences on the perceptual representation of body shape and orientation. Brain 111: 281–297
Lackner JR (1992) Multimodal and motor influences on orientation: implications for adapting to weightless and virtual environments. J Vestib Res 2: 307–322
Lackner JR, Levine MS (1978) Visual direction depends on the operation of spatial constancy mechanisms: the oculobrachial illusion. Neurosci Lett 7: 207–212
Levine MS, Lackner JR (1979) Some sensory and motor factors influencing the control and appreciation of eye and limb position. Exp Brain Res 36: 275–283
Matthews PBC (1981) Evolving views on the internal operation and functional role of the muscle spindle. J Physiol (Lond) 320: 1–30
Matthews PBC (1988) Proprioceptors and their contribution to somatosensory mapping: complex messages require complex processing. Can J Physiol Pharmacol 66: 430–438
Nashner LM (1981) Analysis of stance posture in humans. In: Towe A, Luschei E (eds) Handbook of behavioral neurobiology, vol 5, Motor coordination. Plenum, New York, pp 527–565
Platzer W (1978) Color atlas and textbook of human anatomy, vol 1, Locomotor system. Thieme, Chicago
Rack PMH (1981) Limitations of somatosensory feedback in control of posture and movement. In: Brooks V (ed) Handbook of physiology, sect I, vol II. Am Physiol Soc, Bethesda, pp 229–256
Rothwell JC, Traub MM, Day BL, Obeso JA, Thomas PK, Marsden CD (1982) Manual motor performance in a deafferented man. Brain 105: 515–542
Senders V (1958) Measurement and statistics. Oxford University Press, New York
Solomon HY, Turvey MT (1988) Haptically perceiving the distances reachable with hand-held objects. J Exp Psychol Human Percept Perform 14: 404–427
Srinivasan MA, Whitehouse JM, LaMotte RH (1990) Tactile detection of slip: Surface microgeometry and peripheral neural codes. J Neurophysiol 63: 1323–1332
Vallbo ÅB, Johansson RS (1984) Properties of cutaneous mechaoreceptors in the human hand related to touch sensation. Hum Neurobiol 3: 3–14
Winter DA, Prince F, Stergiou P, Powell C (1993) Medial-lateral and anterior-posterior motor responses associated with centre of pressure changes in quiet standing. Neurosci Res Comm 12: 141–148
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Jeka, J.J., Lackner, J.R. The role of haptic cues from rough and slippery surfaces in human postural control. Exp Brain Res 103, 267–276 (1995). https://doi.org/10.1007/BF00231713
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DOI: https://doi.org/10.1007/BF00231713