Summary
According to recent observations, influence of body load has to be taken into account for the neuronal control of upright stance in addition to the systems known to be involved in this regulation (e.g. afferent input from vestibular canals, visual and muscle stretch receptors). The modulation of compensatory leg muscle electromyographic (EMG) responses observed during horizontal body posture indicates the existence of a receptor system which responds to loading of the body against the supporting platform. This receptor should be located within the extensor muscles because a compensatory EMG response and a loading effect on this response was only present following translational, but not rotational impulses. As the EMG responses were identical to those obtained during upright stance, it is argued that these load receptors activate postural reflexes. According to recent observations in the spinal cat, this afferent input probably arises from Golgi tendon organs and represents a newly discovered function of these receptors in the regulation of stance and gait.
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References
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
Berger W, Dietz V, Quintern J (1984) Corrective reactions to stumbling in man: neuronal coordination of bilateral leg muscle activity during gait. J Physiol (Lond) 357:109–125
Clément G, Gurfinkel VS, Lestienne F, Lipshits MI, Popov KE (1984) Adaptation of postural control to weightlessness. Exp Brain Res 57:61–72
Conway BA, Hultborn K, Kiehn O (1987) Proprioceptive input resets central locomotor rhythm in the spinal cat. Exp Brain Res 68:643–656
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
Dietz V, Horstmann GA, Berger W (1989a) Interlimb co-ordination of leg muscle activation during perturbation ot stance in humans. J Neurophysiol 62:680–693
Dietz V, Horstmann GA, Trippel M, Gollhofer A (1989b) Human postural reflexes and gravity an — underwater simulation. Neurosci Lett 106:350–355
Dietz V, Quintern J, Sillem M (1987) Stumbling reactions in man: significance of proprioceptive and pre-programmed mechanisms. J Physiol (Lond) 386:149–163
Duysens J, Pearson KG (1980) Inhibition of flexor burst generation by loading ankle extensor muscles in walking cats. Brain Res 187:321–332
Houk JC (1979) Regulation of stiffness by skeletomotor reflexes. Ann Rev Physiol 41:99–114
Nashner LM, Berthoz A (1978) Visual contribution to rapid motor responses during postural control. Brain Res 150:403–407
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Dietz, V., Gollhofer, A., Kleiber, M. et al. Regulation of bipedal stance: dependency on “load” receptors. Exp Brain Res 89, 229–231 (1992). https://doi.org/10.1007/BF00229020
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DOI: https://doi.org/10.1007/BF00229020