Health> Vol.5 No.12A, December 2013

Visual reweighting in postural control is less adaptative in older adults

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ABSTRACT

Postural control is based upon the fusion of sensory cues coming from multiple sources requiring continuously adaptation that may be altered due to aging, leading to the poor postural equilibrium in older adults. Therefore, the purpose of this study was to examine the adaptation in the relationship between the visual information and the body sway in older adults. Fifteen older (70 ± 7.6 years) and 15 younger adults (19 ± 1.1 years) stood upright inside of a moving room. Each participant performed 7 trials, each lasting 60 s, in which in the first 3 trials the room oscillated at 0.2 Hz, amplitude of 0.6 cm, and peak-to-peak velocity of 0.6 cm/s. In the fourth trial, the room oscillated at 0.2 Hz but with amplitude of 3.5 cm and peak-to-peak velocity of 3.5 cm/s. In the following 3 trials, the room oscillated with the same parameters of the first three trials. Body sway magnitude was examined through mean sway amplitude, and the relationship between visual information and induced body sway was examined through coherence and gain. Visual manipulation induced corresponding body sway in both older and younger adults, with no difference being observed between groups in the first three trials. In the fourth trial, mean sway amplitude, coherence and gain values were higher for the older compared to younger adults. Moreover, in the last three trials, older adults still showed higher gain values than observed for the younger adults. Taken together, these results suggest that older adults adapt to abrupt changes in visual cues, but not with the same magnitude as younger adults. Yet, older adults do not take advantage of experienced sensory changes in order to adapt the use of the vision information in the following experiences, indicating the less capability of adaptation to the sensory changes.

Cite this paper

Barela, J. , Genoves, G. , Alleoni, B. and Barela, A. (2013) Visual reweighting in postural control is less adaptative in older adults. Health, 5, 74-79. doi: 10.4236/health.2013.512A010.

References

[1] Polastri, P.F., Barela, J.A., Kiemel, T. and Jeka, J.J. (2012) Dynamics of inter-modality re-weighting during human postural control. Experimental Brain Research, 223, 99-108. http://dx.doi.org/10.1007/s00221-012-3244-z
[2] Forssberg, H. and Nashner, L.M. (1982) Ontogenetic development of postural control in man: adaptation to altered support and visual conditions during stance. The Journal of Neuroscience, 2, 545-552.
[3] Nashner, L.M., Black, F.O. and Wall, C. (1982) Adaptation to altered support and visual conditions during stance: Patients with vestibular deficits. The Journal of Neuroscience, 2, 536-544.
[4] Peterka, R.J. (2002) Sensorimotor integration in human postural control. Journal of Neurophysiology, 88, 1097-1118.
[5] Oie, K.S., Kiemel, T. and Jeka, J.J. (2001) Human multisensory fusion of vision and touch: Detecting nonlinearity with small changes in the sensory environment. Neuroscience Letters, 315, 113-116.
[6] Jeka, J.J., Oie, K.S. and Kiemel, T. (2008) Asymmetric adaptation with functional advantage in human sensorimotor control. Experimental Brain Research, 191, 453-463. http://dx.doi.org/10.1007/s00221-008-1539-x
[7] Mergner, T., Maurer, C. and Peterka, R.J. (2003) A multisensory posture control model of human upright stance. Progress in Brain Research 142, 189-201.
http://dx.doi.org/10.1016/S0079-6123(03)42014-1
[8] Barela, J.A., Toledo, D.R., Ferreira, D.M.A. and Polastri, P.F. (2009) Repesagem e adaptacao sensorial no controle postural de adultos. Neurociências 5, 141-149.
[9] Rinaldi, N.M., Polastri, P.F. and Barela, J.A. (2009) Agerelated changes in postural control sensory reweighting. Neuroscience Letters, 467, 225-229.
http://dx.doi.org/10.1016/j.neulet.2009.10.042
[10] Kiemel, T., Oie, K.S. and Jeka, J.J. (2002) Multisensory fusion and the stochastic structure of postural sway. Biological Cybernetics, 87, 262-277.
http://dx.doi.org/10.1007/s00422-002-0333-2
[11] van der Kooij, H., Jacobs, R., Koopman, B. and van der Helm, F. (2001) An adaptive model of sensory integration in a dynamic environment applied to human stance control. Biological Cybernetics, 84, 103-115.
http://dx.doi.org/10.1007/s004220000196
[12] Carver, S., Kiemel, T. and Jeka, J.J. (2006) Modeling the dynamics of sensory reweighting. Biological Cybernetics, 95, 123-134.
http://dx.doi.org/10.1007/s00422-006-0069-5
[13] Berger, L., Chuzel, M., Buisson, G. and Rougier, P. (2005) Undisturbed upright stance control in the elderly: Part 1. Age-related changes in undisturbed upright stance control. Journal of Motor Behavior, 37, 348-358.
http://dx.doi.org/10.3200/JMBR.37.5.348-358
[14] Prioli, A.C., Cardozo, A.S., de Freitas Junior, P.B. and Barela, J.A. (2006) Task demand effects on postural control in older adults. Human Movement Science, 25, 435-446. http://dx.doi.org/10.1016/j.humov.2006.03.003
[15] Sturnieks, D.L., St. George, R. and Lord, S.R. (2008) Balance disorders in the elderly. Neurophysiologie Clinique = Clinical Neurophysiology, 38, 467-478.
http://dx.doi.org/10.1016/j.neucli.2008.09.001
[16] Horak, F.B. (2006) Postural orientation and equilibrium: what do we need to know about neural control of balance to prevent falls? Age and Ageing, 35, ii7-ii11.
http://dx.doi.org/10.1093/ageing/afl077
[17] Prioli, A.C., Freitas Junior, P.B. and Barela, J.A. (2005) Physical activity and postural control in the elderly: Coupling between visual information and body sway. Gerontology, 51, 145-148. http://dx.doi.org/10.1159/000083984
[18] Jeka, J.J., Allison, L.K. and Kiemel, T. (2010) The dynamics of visual reweighting in healthy and fall-prone older adults. Journal of Motor Behavior, 42, 197-208.
http://dx.doi.org/10.1080/00222895.2010.481693
[19] Allison, L.K., Kiemel, T. and Jeka, J.J. (2006) Multisensory reweighting of vision and touch is intact in healthy and fall-prone older adults. Experimental Brain Research, 175, 342-352.
http://dx.doi.org/10.1007/s00221-006-0559-7
[20] Wade, M.G., Lindquist, R., Taylor, J.R. and Treat-Jacobson, D. (1995) Optical flow, spatial orientation and the control of posture in the elderly. The Journals of Gerontology, 50B, P51-P58.
http://dx.doi.org/10.1093/geronb/50B.1.P51
[21] Teasdale, N. and Simoneau, M. (2001) Attentional demands for postural control: The effects of aging and sensory reintegration. Gait and Posture, 14, 203-210.
[22] Lord, S.R., Tiedemann, A., Chapman, k., Munro, B., Murray, S.M. and Sherrington, C. (2005) The effects of an individualized fall prevention program on fall risk and falls in older people: A randomized, controlled trial. Journal of American Geriatrics Society, 53, 1296-1304.
http://dx.doi.org/10.1111/j.1532-5415.2005.53425.x
[23] Anson, E. and Jeka, J.J. (2010) Sensory reweighting: a rehabilitative mechanism? In: C. L. Armstrong and L. Morrow, Eds., Handbook of Medical Neuropsychology, Springer Science, Amsterdam, pp. 519-529.
http://dx.doi.org/10.1007/978-1-4419-1364-7_29
[24] Wade, M.G. and Jones, G. (1997) The role of vision and spatial orientation in the maintenance of posture. Physical Therapy, 77, 619-628.
[25] Eikema, D.J., Hatzitaki, V., Tzovaras, D. and Papaxanthis, C. (2012) Age-dependent modulation of sensory reweighting for controlling posture in a dynamic virtual environment. Age, 34, 1381-1392.
http://dx.doi.org/10.1007/s11357-011-9310-9
[26] Woollacott, M.H., Shumway-Cook, A. and Nashner, L.M. (1986) Aging and posture control changes in sensory organization and muscular coordination. International Journal of Aging and Human Development, 23, 97-114.
http://dx.doi.org/10.2190/VXN3-N3RT-54JB-X16X
[27] Wolpert, D.M., Ghahramani, Z. and Jordan, M.I. (1995) An internal model for sensorimotor integration. Science, 269, 1880-1882.
http://dx.doi.org/10.1126/science.7569931
[28] Lafargue, G., Noel, M. and Luyat, M. (2013) In the elderly, failure to update internal models leads to over-optimistic predictions about upcoming actions. PLoS One, 8, Article ID: e51218.
http://dx.doi.org/10.1371/journal.pone.0051218
[29] Baccini, M., Rinaldi, L.A., Federighi, G., Vannucchi, L., Paci, M. and Masotti, G. (2007) Effectiveness of fingertip light contact in reducing postural sway in older people. Age and Ageing, 36, 30-35.
http://dx.doi.org/10.1093/ageing/afl072
[30] Toledo, D.R. and Barela, J.A. (2010) Sensory and motor differences between young and older adults: Somatosensory contribution to postural control. Revista Brasileira de Fisioterapia, 14, 267-275.

  
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