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Table 2 Individual subject diagnoses and perturbation error responses.

From: Stepping stability: effects of sensory perturbation

Participant Diagnosis *Emax Emin Edif
1 HE – Healthy .26 .10 62.0
2 HE – Healthy .31 .15 52.6
3 HE – Healthy .39 .15 60.5
4 HE – Healthy .42 .13 68.6
5 HE – Healthy .46 .17 63.7
6 VH – Unilateral vestibular hypofunction .46 .11 77.0
7 VH – Unilateral vestibular hypofunction .56 .23 59.2
8 VH – Bilateral vestibular hypofunction .61 .34 44.9
9 VH – Unilateral vestibular hypofunction .61 .16 73.6
10 VH – Unilateral vestibular hypofunction .91 .23 74.3
11 VH – Unilateral vestibular hypofunction .94 .27 71.1
12 CB – Idiopathic spinocerebellar degeneration .52 .26 49.3
13 CB – Cerebellar dysfunction .64 .22 65.3
14 CB – Idiopathic spinocerebellar degeneration .94 .39 59.0
  1. *Emax = Maximum fractional error at initiation of perturbation; Emin = Fractional error recovery at 2–3 cycles after perturbation; Edif = Percent difference in fractional error response from initiation to recovery.