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相关概念视频

Multi-input and Multi-variable systems01:22

Multi-input and Multi-variable systems

Cruise control systems in cars are designed as multi-input systems to maintain a driver's desired speed while compensating for external disturbances such as changes in terrain. The block diagram for a cruise control system typically includes two main inputs: the desired speed set by the driver and any external disturbances, such as the incline of the road. By adjusting the engine throttle, the system maintains the vehicle's speed as close to the desired value as possible.
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相关实验视频

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Transcranial Direct Current Stimulation and Simultaneous Functional Magnetic Resonance Imaging
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在模拟飞行过程中,间直流刺激和飞行员表现.

Kathryn A Feltman, Amanda M Kelley

    Aerospace medicine and human performance
    |December 29, 2023
    PubMed
    概括

    在飞行期间应用的跨直流刺激 (tDCS) 在紧急情况下显著提高了飞行员的性能. 这种神经刺激技术在苛刻的航空环境中增强认知功能的前景非常有希望.

    科学领域:

    • 神经科学是一个神经科学.
    • 航空心理学 航空心理学
    • 人类因素工程 人类因素工程

    背景情况:

    • 飞行员的认知表现对于飞行安全至关重要.
    • 旋翼飞机运行带来了独特的挑战,这些挑战可能会影响飞行员的性能.
    • 超直流刺激 (tDCS) 是一种新兴的非侵入性脑刺激技术,具有潜在的认知益处.

    研究的目的:

    • 为了评估应用到右侧后壁皮质皮质的阳极tDCS对模拟旋翼飞机中的飞行员性能的影响.
    • 为了确定tDCS应用的时间 (飞行前与飞行期间) 是否会影响其在飞行中的意外紧急情况中维持认知表现的有效性.

    主要方法:

    • 一个单盲,随机,假控制的研究,涉及22名飞行员在黑模拟器.
    • 参与者接受了积极的或假的tDCS (2-mA道) 到右侧后壁皮质皮质.
    • 刺激是在飞行前20分钟或飞行期间两次10分钟间隔进行的,并在每次会议结束时引入了飞行中的紧急情况.

    主要成果:

    • 在飞行过程中应用的主动tDCS在飞行中的紧急情况后导致接近性能在统计学上显著改善.
    • 与接受飞行前刺激的飞行员相比,在飞行期间接受tDCS的飞行员保持了更精确的接近路径 (glideslope和定位器值接近零).
    • 在二次绩效指标中没有发现显著差异.

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    结论:

    • 在飞行过程中应用tDCS可能有助于保护有效管理意外的飞行紧急情况所需的认知资源.
    • tDCS应用的时间是一个关键因素,在本研究中,在飞行过程中的刺激显示出对表现的优越影响.
    • 这些发现表明,tDCS可以成为提高飞行员在高压航空场景中的弹性和性能的宝贵工具.