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声学合用于双盲人类低强度聚焦超声波神经调节的声学合.

Aditya Kapoor1,2, Andrew Strohman3,4, Yunruo Ni4

  • 1Fralin Biomedical Research Institute at Virginia Tech Carilion, Roanoke, VA, 24016, USA.

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概括

研究人员开发了一种新的,具有成本效益的凝塑料合装置,用于双盲低强度聚焦超声波 (LIFU) 研究. 这一创新确保了无法区分的真实和虚假设备,提高了神经调节研究的可靠性.

关键词:
这是一个双盲,双盲.人类 人类 人类 人类 人类 人类 人类低强度聚焦超声波低强度聚焦超声波通过神经调节进行神经调节.虚假的控制控制是假的

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科学领域:

  • 神经科学是一个神经科学.
  • 生物医学工程 生物医学工程
  • 声学工程 声学工程

背景情况:

  • 低强度聚焦超声波 (LIFU) 是一种非侵入性神经调节技术,用于精确准大脑电路.
  • 在LIFU研究中实施双盲是减轻实验偏差和确保可重复结果的关键.
  • 现有的超声波合方法在创建有效的双盲协议方面存在挑战.

研究的目的:

  • 开发和评估一种新的,基于3D打印的热塑性合装置,用于在人类LIFU研究中实现双盲.
  • 为了创建视觉和触觉上无法区分的verum (超声传输) 和sham (超声阻塞) 合装置.
  • 评估开发的合装置的声学特性,包括插入损失和光束特性.

主要方法:

  • 用3D打印的不同厚度 (1.5-2.5毫米) 和灌装密度 (25-100%) 的烯二甲乙 styrene (ABS) 盘被嵌入到凝聚合物矩阵中.
  • 对人类神经调节频率 (0.2-1 MHz) 的声学插入损失和光束特征进行了评估.
  • 维鲁姆设备的设计是为了实现声学透明度,而假装设备则包含一个内部空气间隙来阻止超声波传输.

主要成果:

  • 在1.5毫米厚度和50%灌装的ABS显示出低插入损失 (0.9±0.04dB在0.50MHz),适用于verum设备.
  • 假装设备由于内部空气间隙,实现了显著的插入损失 (31dB在0.50MHz).
  • Verum 装置对光束形状的影响最小,辐射偏移 (0.3 ± 0.2 mm) 和轴偏移 (0.5 mm) 较小.

结论:

  • 一种新的,具有成本效益的凝塑料合装置,可以在LIFU研究中实现有效的双盲.
  • 该设备可根据各种LIFU传感器形状进行定制,保持视觉和触觉无法区分.
  • 这种方法提高了人类LIFU实验结果的可靠性和严格性,因为它提供了对盲目的实际解决方案.