PREDOCTORAL FELLOWSHIPS FOR STUDENTS WITH DISABILITIES

描述：（改编自申请人摘要）：本研究将 研究头-躯干位对健康人姿势摇摆的影响 成人使用前庭电刺激（GVS）。在GVS期间， 通过放置在乳突上的电极施加电流。的 刺激使阴极侧的前庭神经超极化， 使阳极侧的前庭神经低极化。这导致姿势性 向阳极摆动。据推测，转动头部相对于 躯干将导致一条平行于穿过 乳突受试者将被要求双脚并拢站立， 平台试验将进行与头部向前，然后把20，40 左右各60度， 正弦GVS。压力中心偏移的方向和大小 将使用测力平台进行测量。的角度和线性运动， 头部（前额）、胸部（T4/T5）和骨盆（S2）将使用 电磁传感器如果发现幅度和 不同头部位置的姿势摆动方向，然后 将研究临床实践的适用性。研究方案 将重复，作为试点研究的一部分，与一些患者， 诊断为近期挥鞭样损伤伴或不伴头晕主诉。 如果发现姿势的幅度或方向存在显著差异， 与健康成人相比， 可能被证明是有用的诊断工具或作为一个结果的措施，以评估 治疗干预。

DESCRIPTION: (Adapted from the Applicant's Abstract): This study will investigate the influence of head-on-trunk position on postural sway in healthy adults using galvanic vestibular stimulation (GVS). During GVS, a small electric current is applied through electrodes placed over the mastoid. The stimulus hyperpolarizes the vestibular nerve on the cathode side and hypopolarizes the vestibular nerve on the anode side. This results in postural sway towards the anode. It is hypothesized that turning the head relative to the trunk will result in a line of sway parallel to a line through the mastoids. Subjects will be asked to stand with their feet together on a force platform. Trials will be conducted with the head forward, and then turned 20,40 and 60 degrees to the right and left with and without the application of sinusoidal GVS. Direction and magnitude of the excursion of center of pressure will be measured using a force platform. The angular and linear movement of the head (forehead), thorax (T4/T5), and pelvis (S2) will be measured using electromagnetic sensors. If a significant difference is found in magnitude and direction of postural sway with different head positions, then the applicability to clinical practice will be investigated. The research protocol will be repeated, as part of a pilot study, with a few patients with a diagnosis of recent whiplash injury with and without complaints of dizziness. If a significant difference is found in the magnitude or direction of postural sway in patients with whiplash injuries as compared with healthy adults then it may prove useful as a diagnostic tool or as an outcome measure to evaluate treatment intervention.