Nonstationarities of postural sway.

Time-frequency analysis of visually induced postural sway has uncovered potentially important time-dependent spectral changes in sway, particularly over intervals shorter than most trial lengths (tens of seconds). Specifically, our studies of center of pressure (COP) in response to sinusoidal (0.25...

Ausführliche Beschreibung

Bibliographische Detailangaben
Veröffentlicht in:	IEEE Engineering in medicine and biology magazine 22, 2 (2003).
1. Verfasser:	Loughlin, P.J
Format:	Artikel
Sprache:	English
Schlagworte:	0.25 Hz. Adaptation. Bandwidth. Center of pressure. Conditional mean frequency. Control subjects. Healthy elderly subjects. Healthy young subjects. Human balance. Instantaneous bandwidth. Instantaneous frequency. Low-order conditional moments. Nonstationary analysis. Population-dependent time-varying changes. Postural sway nonstationarities. Sinusoidal moving scene perturbations. Stimulus frequency. Time-dependent spectral changes. Time-frequency analysis. Time-variations. Vestibularly impaired group. Visual perturbations. Visually induced postural sway.