Abstract

Traumatic brain injuries can result in short-lived and long-lasting neurological impairment. Identifying the correct recovery timeframe is challenging, as balance-based metrics may be negatively impacted if testing is performed soon after exercise. Thirty-two healthy controls and seventeen concussed individuals performed a series of balance challenges, including virtual reality optical flow perturbation. The control group completed a backpacking protocol to induce moderate fatigue. Concussed participants had lower spectral power in the motor cortex and central sulcus when compared to fatigued controls. Moreover, concussed participants experienced a decrease in overall theta band spectral power while fatigued controls showed an increase in theta band spectral power. This neural signature may be useful to distinguish between concussed and non-concussed fatigued participants in future assessments.

摘要

创伤性脑损伤可导致短期和长期的神经损伤。确定正确的恢复时间范围具有挑战性，因为如果运动后立即进行测试，基于平衡的指标可能会受到负面影响。三十二名健康对照者和十七名脑震荡个体进行了一系列平衡挑战，包括虚拟现实光流扰动。对照组完成背包旅行方案以诱导中度疲劳。与疲劳的对照组相比，脑震荡的参与者运动皮层和中央沟的光谱功率较低。此外，脑震荡的参与者的整体 θ 波段光谱功率下降，而疲劳的对照者则显示 θ 波段光谱功率增加。