Postural Sway Biofeedback Training in Congenitally Blind Children

  • Hideo Nakata
  • Yuko Enzaki
  • Kyonosuke Yabe


The aim of this experiment was to determine whether or not congenitally blind children were able to control postural sway under auditory feedback and to examine the effect of such training in congenitally blind children. To assess postural control, a newly developed apparatus was used. Seven untrained congenitally blind children, aged 6 to 10 years, were tested on a force plate. When anteroposterior sway stayed within 10mm in the sagittal plane, no auditory feedback was given. If anteroposterior sway was more than 10mm, they were presented with a 500-Hz pure tone with a speaker. The width of 10 mm corresponded to approximately 80% of the amplitude of anteroposterior sway in each subject. Information about lateral sway was not provided. Time taken while anteroposterior sway exceeded and returned to the width of 10 mm was defined as the response time to a 500-Hz pure tone. Subjects stood for 60s on a force plate with arms held at the sides and feet together, and performed three trials for each training session. Training sessions were done once a week for five consecutive weeks. The results showed that the total time for which postural sway deviated from the width of 10 mm decreased as training continued. The results also indicated that the response time to the 500-Hz pure tone became shorter as training progressed. It is apparent that congenitally blind children changed their pattern of posture movements for postural correction; it may be associated with changes in postural strategy. Congenitally blind children may be refining their interpretation of auditory feedback and learning to integrate it in the control of posture. We will call the ability of the remaining sensory systems to control posture “nonvisual postural control systems”. In conclusion, it was found that postural sway biofeedback training was effective for the assessment of postural control in congenitally blind children.


Force Plate Auditory Feedback Impaired Child Postural Strategy Sighted Subject 


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  1. 1.
    Edwards AS (1946) Body sway and vision. J Exp Psychol 36:526–536PubMedCrossRefGoogle Scholar
  2. 2.
    Leonard JA (1969) Static and mobile balancing performance of blind adolescent grammar school children. New Outlook Blind 63:65–72Google Scholar
  3. 3.
    Gipsman SC (1981) Effect of visual condition on use of proprioceptive cues in performing a balance task. J Vis Impair Blindness 75(2):50–54Google Scholar
  4. 4.
    Ribadi H, Rider RA, Toole T (1987) A comparison of static and dynamic balance in congenitally blind, sighted, and sighted blindfolded adolescents. Adapt Phys Activity Quart 4:220–225Google Scholar
  5. 5.
    Nakata H (1983) Postural controllabilities of the visually impaired in maintaining upright standing posture (In Japanese with English abstract). Jpn J Hum Posture 3:1–7Google Scholar
  6. 6.
    Woollacott MH, Shumway-Cook A (1990) Changes in posture control across the life span—A system approach. Physical Therapy 70:799–807PubMedGoogle Scholar
  7. 7.
    Horak FB, Nashner LM (1986) Central programming of postural movements: adaptation to altered support surface configurations. J Neurophysiol 55:1369–1381PubMedGoogle Scholar
  8. 8.
    Horak FB, Nashner LM, Diener HC (1990) Postural strategies associated with somatosensory and vestibular loss. Exp Brain Res 82:167–177PubMedCrossRefGoogle Scholar
  9. 9.
    Starkes J, Riach C, Clarke B (1992) The effect of eye closure on postural sway: converging evidence from children and a Parkinson patient. In: Proteau L, Elliot D (eds) Vision and motor control. North-Holland, pp 353–373CrossRefGoogle Scholar
  10. 10.
    Murphy FM, O’Driscoll M (1989) Observations on the motor development of visually impaired children. Physiotherapy 75:505–508CrossRefGoogle Scholar
  11. 11.
    Nakata H (1990) Development of auditory reaction times, using fine and gross motor movements in visually impaired children. In: Kaneko M (ed) Fitness for the aged, disabled, and industrial worker. International series on sport sciences, vol 20. Human Kinetics, pp 148–153Google Scholar
  12. 12.
    Buell C (1950) Motor performance of visually handicapped children. Except Child 17:69–72Google Scholar
  13. 13.
    Burton AW, Walter ED (1992) Assessing balance in adapted physical education: fundamental concepts and applications. Adapt Phys Activity Quart 9:14–46Google Scholar

Copyright information

© Springer-Verlag Tokyo 1994

Authors and Affiliations

  • Hideo Nakata
  • Yuko Enzaki
  • Kyonosuke Yabe

There are no affiliations available

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