Tags

Type your tag names separated by a space and hit enter

Destabilization of human balance control by static and dynamic head tilts.
Gait Posture. 2006 Apr; 23(3):315-23.GP

Abstract

To better understand the effects of varying head movement frequencies on human balance control, 12 healthy adult humans were studied during static and dynamic (0.14, 0.33, 0.6 Hz) head tilts of +/- 30 degrees in the pitch and roll planes. Postural sway was measured during upright stance with eyes closed and altered somatosensory inputs provided by a computerized dynamic posturography (CDP) system. Subjects were able to maintain upright stance with static head tilts, although postural sway was increased during neck extension. Postural stability was decreased during dynamic head tilts, and the degree of destabilization varied directly with increasing frequency of head tilt. In the absence of vision and accurate foot support surface inputs, postural stability may be compromised during dynamic head tilts due to a decreased ability of the vestibular system to discern the orientation of gravity. This instability may compound the risk of falling following recovery from balance disorders or adaptation to altered gravity conditions such as space flight. Thus, dynamic head tilts may improve the diagnostic sensitivity of computerized dynamic posturography, particularly for healthy subjects recovering from temporary balance control deficits.

Authors+Show Affiliations

Neurosciences Laboratory, Human Adaptation and Countermeasures Office, NASA Johnson Space Center, Houston, TX, USA. wpaloski@ems.jsc.nasa.govNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, N.I.H., Extramural
Research Support, U.S. Gov't, Non-P.H.S.

Language

eng

PubMed ID

15961313

Citation

Paloski, William H., et al. "Destabilization of Human Balance Control By Static and Dynamic Head Tilts." Gait & Posture, vol. 23, no. 3, 2006, pp. 315-23.
Paloski WH, Wood SJ, Feiveson AH, et al. Destabilization of human balance control by static and dynamic head tilts. Gait Posture. 2006;23(3):315-23.
Paloski, W. H., Wood, S. J., Feiveson, A. H., Black, F. O., Hwang, E. Y., & Reschke, M. F. (2006). Destabilization of human balance control by static and dynamic head tilts. Gait & Posture, 23(3), 315-23.
Paloski WH, et al. Destabilization of Human Balance Control By Static and Dynamic Head Tilts. Gait Posture. 2006;23(3):315-23. PubMed PMID: 15961313.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Destabilization of human balance control by static and dynamic head tilts. AU - Paloski,William H, AU - Wood,Scott J, AU - Feiveson,Alan H, AU - Black,F Owen, AU - Hwang,Emma Y, AU - Reschke,Millard F, Y1 - 2005/06/14/ PY - 2004/12/21/received PY - 2005/04/05/revised PY - 2005/04/05/accepted PY - 2005/6/18/pubmed PY - 2006/8/11/medline PY - 2005/6/18/entrez SP - 315 EP - 23 JF - Gait & posture JO - Gait Posture VL - 23 IS - 3 N2 - To better understand the effects of varying head movement frequencies on human balance control, 12 healthy adult humans were studied during static and dynamic (0.14, 0.33, 0.6 Hz) head tilts of +/- 30 degrees in the pitch and roll planes. Postural sway was measured during upright stance with eyes closed and altered somatosensory inputs provided by a computerized dynamic posturography (CDP) system. Subjects were able to maintain upright stance with static head tilts, although postural sway was increased during neck extension. Postural stability was decreased during dynamic head tilts, and the degree of destabilization varied directly with increasing frequency of head tilt. In the absence of vision and accurate foot support surface inputs, postural stability may be compromised during dynamic head tilts due to a decreased ability of the vestibular system to discern the orientation of gravity. This instability may compound the risk of falling following recovery from balance disorders or adaptation to altered gravity conditions such as space flight. Thus, dynamic head tilts may improve the diagnostic sensitivity of computerized dynamic posturography, particularly for healthy subjects recovering from temporary balance control deficits. SN - 0966-6362 UR - https://www.unboundmedicine.com/medline/citation/15961313/Destabilization_of_human_balance_control_by_static_and_dynamic_head_tilts_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0966-6362(05)00038-X DB - PRIME DP - Unbound Medicine ER -