Summary
This study examines the roles of somatosensory and vestibular information in the coordination of postural responses. The role of somatosensory information was examined by comparing postural responses of healthy control subjects prior to and following somatosensory loss due to hypoxic anesthesia of the feet and ankles. The role of vestibular information was evaluated by comparing the postural responses of control subjects and patients with bilateral vestibular loss. Postural responses were quantified by measuring 1) spatial and temporal characteristics of leg and trunk EMG activation; 2) ankle, knee, and hip joint kinematics, and 3) surface forces in response to anterior and posterior surface translations under different visual and surface conditions. Results showed that neither vestibular nor somatosensory loss resulted in delayed or disorganized postural responses. However, both types of sensory deficits altered the type of postural response selected under a given set of conditions. Somatosensory loss resulted in an increased hip strategy for postural correction, similar to the movement strategy used by control subjects while standing across a shortened surface. Vestibular loss resulted in a normal ankle strategy but lack of a hip strategy, even when required for the task of maintaining equilibrium on a shortened surface. Neither somatosensory nor vestibular loss resulted in difficulty in utilizing remaining sensory information for orientation during quiet stance. These results support the hypothesis that cutaneous and joint somatosensory information from the feet and ankles may play an important role in assuring that the form of postural movements are appropriate for the current biomechanical constraints of the surface and/or foot. The results also suggest that vestibular information is necessary in controlling equilibrium in a task requiring use of the hip strategy. Thus, both somatosensory and vestibular sensory information play important roles in the selection of postural movement strategies appropriate for their environmental contexts.
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Allum JHJ, Pfaltz CR (1984) Influence of bilateral and acute unilateral peripheral vestibular deficits on early sway stabilizing responses in human tibialis anterior muscles. Acta Otolaryngol (Stockh)406:115–119
Allum JHJ, Pfaltz CR (1985) Visual and vestibular contributions to pitch sway stabilization in the ankle muscles of normals and patients with bilateral peripheral vestibular deficits. Exp Brain Res 58:82–94
Black FO, Nashner LM (1984) Vestibulospinal control differs in patients with reduced versus distorted vestibular function. Acta Otolaryngol (Stockh) 406:110–114
Black FO, Nashner LM (1985) Postural control in four classes of vestibular abnormalities. In: Igarashi M, Black FO (eds) Pathological disorders and postural control. S Karger, Basel, pp 271–281
Black FO, Shupert C, Horak FB, Nashner LM (1988) Abnormal postural control associated with peripheral vestibular disorders. Prog Brain Res 76:263–275
Bussel B, Katz R, Pierrot-Deseilligny E, Bergego C, Hayat A (1980) Vestibular and proprioceptive influences on the postural reactions to a sudden body displacement in man: spinal and supraspinal mechanisms of voluntary motor control and locomotion Prog Clin Neurophys 8:310–322
Chan CWY, Melvill-Jones G, Catchlove RFH (1979) The ‘late’ electromyographic response to limb displacement in man. II. Sensory origin. Electroencephalogr Clin Neurophysiol 46:182–188
Diener HC, Dichgans J, Brucek W, Selink J (1982) Stabilization of human posture during induced oscillations of the body. Exp Brain Res 45:126–132
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
Diener HC, Horak FB, Nashner LM (1988) Influence of stimulus parameters on human postural responses. J. Neurophysiol 59:1888–1905
Fregly AR (1974) Vestibular ataxia and its measurement in man. In: Kornhuber HH (eds) Handbook of sensory physiology, Vol 6. Vestibular system. Springer Verlag, Berlin, pp 321–360
Gordon ME (1986) The biomechanics and muscular synergies of human upright posture. PhD thesis. Stanford University, Palo Alto CA
Gottlieb G. Agarwal G, Jaeger R (1983) Responses to sudden torques about the ankle in man. V. Effects of peripheral ischemia. J Neurophysiol 50:297–312
Gurfinkel VS, Lipshits MI, Mori S, Popov KE (1976) The state of the stretch reflex during quite standing in man. Progr Brain Res 44:473–490
Guralink DB (1984) In: Webster's new world dictionary. Simon and Schuster, New York, p 1407
Horak FB, Diener HC, Nashner LM (1989c) Influence of central set on human postural responses. J Neurophysiol 62:841–853
Horak FB, Mirka A, Shupert CL (1989a) The role of peripheral vestibular disorders in postural dyscontrol in the elderly. In:Woollacott M, Shumway-Cook A (eds) The development of posture and gait across the lifespan. University of South Carolina Press, Columbia, pp 253–279
Horak FB. Nashner LM (1986) Central programming of postural movements: adaptation to altered support surface configurations. J Neurophysiol 55:1369–1381
Horak FB, Shumway-Cook A, Crowe T, Black FO (1988) Vestibular function and motor proficiency in children with hearing impairments and in learning disabled children with motor impairments. Dev Med Child Neurol 30:64–79
Horak FB, Shupert CL, Mirka A (1989b) Components of postural dyscontrol in the elderly: a review. Neurobiol Aging 10:727–738
Keshner EA, Allum J (1986) Plasticity in pitch sway stabilization: normal habituation and compensation for peripheral vestibular deficits. In: Bles W, Brandt T (eds) Disorders of posture and gait. Elsevier Scientific Publishers, Amsterdam, pp 289–314
Lee DN, Lishman JR (1975) Visual proprioceptive control of stance. J Hum Move Stud 1:87–95
Lewis T, Pickering GW, Rothchild P (1937) Centripetal paralysis arising out of arrested blood flow to the limb, including notes on a form of tingling. Heart 16:1–32
Macpherson JM (1988) Strategies that simplify the control of quadrupedal stance. II. Electromyographic activity. J Neurophysiol 60:218–231
Macpherson JM, Horak FB, Dunbar DC (1989) Stance dependence of automatic postural adjustments in humans. Exp Brain Res78:557–566
Magladuy JW, McDougal DB, Stell J (1950) Electrophysiological studies of nerve and reflex activity in normal man. II. The effects of peripheral ischemia. Bull Johns Hopkins Hosp 86:291–312
Mauritz KH, Dietz V, Haller M (1980) Balancing as a clinical test in the differential diagnosis of sensory-motor disorders. J Neurol Neurosurg Psychiat 43:407–412
McCollum G, Horak FB, Nashner LM (1984) Parsimony in neural calculations for postural movements. In: Bloedel J, Dichgans J, Precht W (eds) Cerebellar functions. Springer, Berlin, pp52–66
Moore SP, Horak FB, Nashner LM (1986) Influence of initial stance position on human postural responses. Soc Neurosci Abstr 12:1301
Nashner LM (1971) A model describing vestibular detection of body sway motion. Acta Otolaryngol 72:429–436
Nashner LM (1976) Adapting reflexes controlling the human posture. Exp Brain Res 26:59–72
Nashner LM, Cordo PJ (1981) Relation of automatic postural responses and reaction-time voluntary movements of human leg muscles. Exp Brain Res 43:395–405
Nashner LM, McCollum G (1985) The organization of human postural movements: a formal basis and experimental synthesis. Behav Brain Sci 8:135–172
Nashner LM, Black FO, Wall C (1982) Adaptation to altered support and visual conditions during stance: patients with vestibular deficits. J Neurosci 2:536–544
Nashner LM, Shupert CL, Horak FB (1988) Head-trunk movement coordination in the standing posture. Progr Brain Res 76:243–251
Nashner LM, Shupert CL, Horak FB, Black FO (1990) Organization of posture controls: an analysis of sensory and mechanical constraints. Progr Brain Res (in press)
Nashner LM, Woollacott M, Tuma G (1979) Organization of rapid responses to postural and locomotor-like perturbations of standing man. Exp Brain Res 36:463–476
Shupert CL, Black FO, Horak FB, Nashner LM (1988) Coordination of the head and body in response to support surface translations in normals and patients with bilaterally reduced vestibular function. In: Amblard B, Berthoz A, Clarac F (eds) Posture and gait: development, adaptation and modulation. Elsevier Science Publishers, Amsterdam, pp 281–289
Shupert CL, Horak FB, Black FO (1990) The effect of peripheral vestibular disorders on head-trunk coordination during postural sway in humans. In: Berthoz A, Graf W, Vidal P (eds), The headneck sensory motor system: evolution, development, neuronal mechanisms, and disorders. John Wiley and Sons Ltd, Chichester England (in press)
Sinclair DC (1948) Observations on sensory paralysis produced by compression of a human limb. J Neurophysiol 11:75–92
Webb P (1964) Bioastronautics data handbook. Nat Aeronaut Space Admin SP-3006, Washington
Wolfson LI, Whipple R, Amerman P, Kleinberg A (1986) Stressing the postural response: a quantitative method for testing balance. J Am Ger Soc 34:845–850
Woollacott MH, Shumway-Cook A; Nashner LM (1986) Aging and posture control: changes in sensory organization and muscular coordination. Int J Neurosci 23:97–114
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Horak, F.B., Nashner, L.M. & Diener, H.C. Postural strategies associated with somatosensory and vestibular loss. Exp Brain Res 82, 167–177 (1990). https://doi.org/10.1007/BF00230848
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DOI: https://doi.org/10.1007/BF00230848