Experimental Brain Research

, Volume 218, Issue 1, pp 41–47

Production of finely graded forces in humans: effects of simulated weightlessness by water immersion

Research Article
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Abstract

We have shown before that subjects exposed to a changed gravitoinertial environment produce exaggerated manual forces. From the observed pattern of findings, we argued that initial forces were exaggerated because of abnormal vestibular activity and peak forces because of degraded proprioceptive feedback. If so, only peak but not initial forces should be affected by water immersion, an environment that influences proprioceptive feedback but not vestibular activity. The present study was undertaken to scrutinize this prediction. Twelve subjects sat in a chair once immersed in water and once on dry land, while producing pre-trained isometric forces with a joystick. In a control experiment, subjects performed a four-choice reaction-time task. During the joystick task, produced initial forces were comparable in water and on land, while peak (+24%) and end forces (+22%) were significantly higher in water, as was their reaction time (+6%). During the control task, reaction time was comparable in water and on land. Our findings corroborate the above notion that initial forces increase when the vestibular system is stimulated (gravitoinertial change, visual field motion, but not water immersion), while peak forces increase when proprioceptive feedback is degraded (probably all three scenarios) and are not corrected until response end. Our findings further confirm the absence of cognitive slowing in simple-choice reaction tasks under shallow-water immersion conditions.

Keywords

Force Joystick Isometric Reaction time Unloading Astronaut training 

References

  1. Allum JH, Bloem BR, Carpenter MG, Hulliger M, Hadders-Algra M (1998) Proprioceptive control of posture: a review of new concepts. Gait and Posture 8:214–242PubMedCrossRefGoogle Scholar
  2. Augurelle AS, Smith AM, Lejeune T, Thonnard JL (2003) Importance of cutaneous feedback in maintaining a secure grip during manipulation of hand-held objects. J Neurophysiol 89:665–671PubMedCrossRefGoogle Scholar
  3. Bock O (1994) Joint position sense in simulated changed-gravity environments. Aviat Space Environ Med 65:621–626PubMedGoogle Scholar
  4. Bock O, Cheung BS (1998) Control of isometric force in hypergravity. Aviat Space Environ Med 69(Pt 1):27–31PubMedGoogle Scholar
  5. Bolender H, Stevenin H, Bessone L, Torres A (2006) Preparing for Space. EVA Training at the European Astronaut Centre. ESA Bulletin 128:32–40Google Scholar
  6. Brown JL (1961) Orientation to the vertical during water immersion. Aerosp Med 32:209–217Google Scholar
  7. Casler JG, Cook JR (1998) Cognitive performance in space and analogous environments. Int J Cognit Ergon 3(Pt4):351–372Google Scholar
  8. Chernikoff R, Taylor FV (1952) Reaction time to kinesthetic stimulation resulting from sudden arm displacement. J Exp Psychol 43:1–8PubMedCrossRefGoogle Scholar
  9. Dalecki M, Bock O, Guardiera S (2009) Effects of visual field motion on the production of manual forces and displacements. Aviat Space Environ Med 80:790–795PubMedCrossRefGoogle Scholar
  10. Dalecki M, Bock O, Guardiera S (2010) Simulated flight path control of fighter pilots and novice subjects at 3 Gz in a human centrifuge. Aviat Space Environ Med 81:484–488PubMedCrossRefGoogle Scholar
  11. Davis FM, Osborne JP, Baddeley AD, Graham IM (1972) Diver performance: Nitrogen narcosis and anxiety. Aerosp Med 43:1079–1082PubMedGoogle Scholar
  12. Girgenrath M, Goebel S, Bock O, Pongratz H (2005) Isometric force production in high Gz: mechanical effects, proprioception, and central motor commands. Aviat Space Environ Med 76(Pt4):339–343PubMedGoogle Scholar
  13. Goebel S, Bock O, Pongratz H, Krause W (2006) Practice ameliorates deficits of isometric force production in +3 Gz. Aviat Space Environ Med 77(Pt6):586–591Google Scholar
  14. Granit R (1975) The functional role of muscle spindles: facts and hypothesis. Brain 98:531–556PubMedCrossRefGoogle Scholar
  15. Guardiera S, Bock O, Pongratz H, Krause W (2007a) Acceleration effects on manual performance with isometric and displacement joysticks. Aviat Space Environ Med 78:990–994PubMedCrossRefGoogle Scholar
  16. Guardiera S, Bock O, Pongratz H, Krause W (2007b) Isometric force production in PA-200 tornado pilots exposed to +3 Gz acceleration. Aviat Space Environ Med 78:1072–1074Google Scholar
  17. Guardiera S, Dalecki M, Bock O (2010) Stability of simulated flight path control at +3 Gz in a human centrifuge. Aviat Space Environ Med 81:339–398CrossRefGoogle Scholar
  18. Henningsen H, Knecht S, Ende-Henningsen B (1997) Influence of afferent feedback on isometric fine force resolution in humans. Exp Brain Res 113:207–213PubMedCrossRefGoogle Scholar
  19. Hermsdörfer J, Marquardt C, Philipp J, Zierdt A, Nowak D, Glasauer S, Mai N (1999) Grip forces exerted against stationary held objects during gravity changes. Exp Brain Res 126:205–214PubMedCrossRefGoogle Scholar
  20. Hermsdörfer J, Marquardt C, Philipp J, Zierdt A, Nowak D, Glasauer S, Mai N (2000) Moving weightless objects Grip force control during microgravity. Exp Brain Res 132:52–64PubMedCrossRefGoogle Scholar
  21. Higgins JR, Angel RW (1970) Correction of tracking errors without sensory feedback. J Exp Psychol 84:412–416PubMedCrossRefGoogle Scholar
  22. Iles JF, Pisini JV (1992) Vestibular-evoked postural reactions in man and modulation of transmission in spinal reflex pathways. J Physiol 455:407–424PubMedGoogle Scholar
  23. Jarchow T, Mast FW (1999) The effect of water immersion on postural and visual orientation. Aviat Space Environ Med 70(Pt9):879–886PubMedGoogle Scholar
  24. Johansson RS, Cole KJ (1992) Sensory-motor coordination during grasping and manipulative actions. Curr Opin Neurobiol 2:815–823PubMedCrossRefGoogle Scholar
  25. Johansson RS, Hger C, Backstrom L (1992) Somatosensory control of precision grip during unpredictable pulling loads III. Impairments during digital anesthesia. Exp Brain Res 89:204–213PubMedCrossRefGoogle Scholar
  26. Kennedy PM, Cresswell AG, Chua R, Inglis JT (2007) Vestibulospinal influences on lower limb motoneurons. Can J Physiol Pharmacol 82(Pt8–9):675–681Google Scholar
  27. Lackner J, DiZio P (1992) Gravitoinertial force level affects the appreciation of limb position during muscle vibration. Brain Res 592:175–180PubMedCrossRefGoogle Scholar
  28. Manzey D, Lorenz B (1998) Mental performance during short-term and long-term spaceflight. Brain Res Rew 28:215–221Google Scholar
  29. Mierau A, Girgenrath M, Bock O (2008) Isometric force production during changed-Gz episodes of parabolic flight. Eur J Appl Physiol 102(Pt3):313–318PubMedGoogle Scholar
  30. Nelson JG (1968) The effect of water immersion and body position upon perception of the gravitational vertical. Aerosp Med 39(Pt8):806–811PubMedGoogle Scholar
  31. Pöyhönen T, Avela J (2002) Effect of head-out water immersion on neuromuscular function of the plantarflexor muscles. Aviat Space Environ Med 73(Pt12):1215–1218PubMedGoogle Scholar
  32. Pöyhönen T, Keskinen KL, Hautala A, Savolainen J, Mälkiä E (1999) Human isometric force production and electromyogram activity of knee extensor muscles in water and on dry land. Eur J Appl Physiol 80:52–56CrossRefGoogle Scholar
  33. Ross HE, Reschke MF (1982) Mass estimation and discrimination during brief episodes of zero gravity. Percept Psychophys 31(Pt5):429–436PubMedCrossRefGoogle Scholar
  34. Ross HE, Brodie E, Benson A (1984) Mass discrimination during prolonged weightlessness. Science 225(4658):219–221PubMedCrossRefGoogle Scholar
  35. Rothwell JC, Traub MM, Day BL, Obeso JA, Thomas PK, Marsden CD (1982) Manual motor performance in a deafferented man. Brain 105(Pt 3):515–542PubMedCrossRefGoogle Scholar
  36. Sand DP, Girgenrath M, Bock O, Pongratz H (2003) Production of isometric forces during sustained acceleration. Aviat Space Environ Med 74(Pt1):633–637PubMedGoogle Scholar
  37. Veneziano WH, da Rocha AF, Goncalves CD, Pena AG, Carmo JC, Nascimento FAO, Rainoldi A (2006) Confounding factors in water EMG recordings: an approach to a definitive standard. Med Biol Eng Comput 44:348–351PubMedCrossRefGoogle Scholar
  38. White O, McIntyre J, Augurelle AS, Thonnard JL (2005) Do novel gravitational environments alter the grip-force/load-force coupling at the fingertips? Exp Brain Res 163:324–334PubMedCrossRefGoogle Scholar
  39. Wright WG, DiZio P, Lackner JR (2005) Vertical linear self-motion perception during visual and inertial motion: more than weighted summation of sensory inputs. J Vestib Res 15:185–195PubMedGoogle Scholar

Copyright information

© Springer-Verlag 2012

Authors and Affiliations

  1. 1.Institute of Physiology and AnatomyGerman Sport University CologneCologneGermany
  2. 2.Medical Helpline WorldwideBremenGermany
  3. 3.Institute of Movement and NeurosciencesGerman Sport UniversityCologneGermany

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