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相关概念视频

Somatosensation01:33

Somatosensation

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The somatosensory system relays sensory information from the skin, mucous membranes, limbs, and joints. Somatosensation is more familiarly known as the sense of touch. A typical somatosensory pathway includes three types of long neurons: primary, secondary, and tertiary. Primary neurons have cell bodies located near the spinal cord in groups of neurons called dorsal root ganglia. The sensory neurons of ganglia innervate designated areas of skin called dermatomes.
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贝塔静止状态功能连接性预测触觉空间敏度.

Ryoki Sasaki1,2, Sho Kojima1,3, Naofumi Otsuru1,3

  • 1Institute for Human Movement and Medical Sciences, Niigata University of Health and Welfare, 1398 Shimami-cho, Kita-Ku, Niigata City, Niigata 950-3198, Japan.

Cerebral cortex (New York, N.Y. : 1991)
|June 21, 2023
PubMed
概括

初级体感皮质 (S1) 中特定的β皮质皮质网络和局部抑制网络预测触觉空间敏度. 较强的S1连接和较弱的体感官门与更好的两点歧视性能相关.

关键词:
功能连接性的功能连接性磁脑脑摄影 (MEG) 是一种磁脑脑摄影技术.主要的体感皮层 (somatosensory cortex) 是一个主要的体感皮层.索马托感官门的关闭触觉空间敏度是一种触觉空间敏度.

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科学领域:

  • 神经科学是一个神经科学.
  • 认知科学 认知科学
  • 感官处理 感官处理

背景情况:

  • 触觉感知依赖于主要的体感皮质 (S1) 和它的连接.
  • 在S1中体感门预测触觉性能,但皮质皮质连接的作用尚不清楚.

研究的目的:

  • 研究皮质皮质和局部网络如何预测触觉空间敏度.
  • 阐明大脑连接在触觉感知中的功能相关性.

主要方法:

  • 在42名成年人中进行磁脑电图 (MEG),记录休息状态和唤起的反应.
  • 评估了S1种子静止状态功能连接 (rs-FC) 和使用对联脉冲刺激的体感门.
  • 用定制设备测量了两点歧视值.

主要成果:

  • 在S1和表皮/部区域之间的β rs-FC与歧视值负相关 (更强的连接性能更好).
  • N20m响应的体感门与歧视值负相关 (在较弱的门关下表现更好).

结论:

  • 特定的贝塔皮质皮质网络功能性地支持触觉空间敏度.
  • 局部抑制网络,体感门表示,也在触觉空间分辨率中发挥着至关重要的作用.