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较高的认知负载会干扰头手协调:基于虚拟现实的研究.

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  • 1Center of Advanced Technologies in Rehabilitation, Sheba Medical Center, Ramat Gan, Israel.

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此摘要是机器生成的。

认知负荷会影响运动任务中的头手协调. 与持续视觉注意力 (SVA) 相比,分散注意力 (DA) 显著减少了头手同步,影响了所有年龄组的运动时间.

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科学领域:

  • 神经科学是一个神经科学.
  • 认知心理学 认知心理学
  • 人类运动科学科学 人类运动科学

背景情况:

  • 日常活动需要决策和运动控制,通常在不同的认知负载下.
  • 头手协调对于有效执行运动功能至关重要.
  • 认知需求可以影响运动行为,但精确的机制尚未完全理解.

研究的目的:

  • 调查不同认知负载如何影响头手协调.
  • 用虚拟现实神经认知测试平台来评估运动行为的认知诱导的变化.
  • 在认知负荷下分析与年龄相关的头手协调差异.

主要方法:

  • 开发了一种虚拟现实调整的色迹测试 (VR-CTT) 来评估持续视觉注意力 (SVA) 和分化注意力 (DA).
  • 收集了从122名健康参与者 (20-90岁) 进行VR-CTT的头部和手动力学数据.
  • 利用交叉相关性分析量化空间连贯性和头手运动中的相位移动.

主要成果:

  • 在所有年龄组的SVA (Trails A) 和DA (Trails B) 条件中观察到头部和手部运动之间的高空间连贯性 (R ≥ 0.76).
  • 在DA条件下与SVA条件相比,所有参与者的头-手时间滞后 (头领手) 显著增加.
  • 这些发现表明,增加认知资源分配到分分注意力任务中会破坏头手同步.

结论:

  • 与持续视觉注意力任务相比,分化注意力任务会给人带来更大的认知负载,导致头手同步减少.
  • 在认知负载下观察到的头手协调变化在年轻人,中年人和老年人中是一致的.
  • 头-手协调是认知-运动相互作用的敏感指标,以及认知负载对运动控制的影响.