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相关概念视频

Somatosensation01:33

Somatosensation

36.6K
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.
36.6K
Sensory Functions of the Skin01:16

Sensory Functions of the Skin

5.0K
The skin is the largest organ of the human body and plays a crucial role in our sensory perception. It contains a vast network of sensory receptors that contribute to the skin's protective function by perceiving physical, biological, and environmental cues and generating relevant responses.
There are two main categories of receptors on the skin: capsulated and non-capsulated. The non-capsulated ones are mainly the pain receptors. The capsulated ones can be further categorized based on the...
5.0K
Sensory Perception: Organization of the Somatosensory System01:11

Sensory Perception: Organization of the Somatosensory System

3.0K
The somatosensory system is the central and peripheral nervous system component that senses and processes touch, pressure, pain, temperature, and body position or proprioception. The process of sensation takes place at three levels:
The receptor level:
The receptor level is the first stage of sensation. It involves the detection of a stimulus by specialized sensory receptors. The stimulus must arrive within the receptor's receptive field. Next, the receptor converts the energy of the...
3.0K
Tactile and Chemical Senses01:27

Tactile and Chemical Senses

296
Tactile senses encompass touch, temperature, and pain, each mediated by specific receptors. Touch receptors detect mechanical energy or pressure against the skin. Sensory fibers from these receptors enter the spinal cord and relay information to the brain stem. Here, most fibers cross over to the opposite side of the brain. The touch information then moves to the thalamus, which projects a map of the body's surface onto the somatosensory areas of the parietal lobes in the cerebral cortex.
296
Overview of Somatic Sensory Pathways01:29

Overview of Somatic Sensory Pathways

4.5K
Somatic sensory or somatosensory pathways refer to the neural pathways that carry information related to touch, pressure, pain, temperature, and proprioception from the skin, muscles, tendons, and joints to the brain. These pathways involve several stages of processing and integration of sensory information.
The somatosensory system is divided into three main pathways: the dorsal (or posterior) column-medial lemniscus, spinothalamic (or anterolateral), and spinocerebellar pathways.
The dorsal...
4.5K
Major Somatic Sensory Pathways01:28

Major Somatic Sensory Pathways

962
Sensory impulses related to touch, pressure, vibration, and proprioception from various body parts, such as the limbs, trunk, neck, and posterior head, travel to the cerebral cortex through the posterior column-medial lemniscus pathway. The pathway’s name derives from the two white-matter tracts that convey the impulses: the spinal cord's posterior column and the brainstem's medial lemniscus. First-order sensory neurons extend their axons into the spinal cord, forming the...
962

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相关实验视频

Updated: Jul 5, 2025

Fabrication of the Composite Regenerative Peripheral Nerve Interface C-RPNI in the Adult Rat
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Fabrication of the Composite Regenerative Peripheral Nerve Interface C-RPNI in the Adult Rat

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一种全蛋白质多感官高度生物皮肤.

Shengyou Li1,2, Andeng Liu1, Wu Qiu3

  • 1Research Institute for Biomimetics and Soft Matter, College of Physical Science and Technology, Fujian Provincial Key Laboratory for Soft Functional Materials Research, Xiamen University, Xiamen 361005, China.

ACS nano
|January 23, 2024
PubMed
概括

研究人员开发了一种仿真人类触摸受体的丝纤维蛋白生物皮肤 (SFBS). 这种先进的材料使机器人和假肢能够感知压力,振动和纹理,增强现实性和功能性.

关键词:
电容传感器 电容传感器电子皮肤 电子皮肤机械感受器的机械感受器丝纤维素中的丝纤维素.电流电流是电流电流的电流.

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Author Spotlight: Developing a Unique Modular Microphysiological System to Mimic Human Barrier Tissue
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科学领域:

  • 生物材料工程 生物材料工程
  • 机器人技术 机器人技术 机器人技术
  • 神经科学是一个神经科学.

背景情况:

  • 现实的机器人需要先进的材料来模仿人类皮肤的感觉功能.
  • 现有的人工皮肤技术往往缺乏生物皮肤的敏感性和多功能性.

研究的目的:

  • 开发一种全蛋白丝纤维蛋白生物皮肤 (SFBS),能够模拟快速适应 (FA) 和缓慢适应 (SA) 的人类皮肤受体.
  • 为机器人和假肢领域的应用创造一种多功能的人造皮肤,其特性与人体皮肤相似.

主要方法:

  • 制造机械明显的丝纤维蛋白薄膜和水凝,以模仿表皮和皮肤层.
  • 将SA和FA传感器集成到SFBS结构中.
  • 描述SFBS的特性,包括伸展性,弹性,模量,生物相容性和可降解性.
  • 测试SFBS用于静态压力传感,高频振动检测,材料区分和物体形态识别.

主要成果:

  • SFBS表现出类似皮肤的特性:伸展性 (>140%),弹性,低模量 (<10 kPa),生物相容性和可降解性.
  • 在体外和体内均表现出高度敏感的静压传感器 (1.083 kPa-1).
  • 成功检测到高频振动 (50-400 Hz) 并区分不同的材料和滑动运动.
  • 识别了物体之间的细微形态差异,展示了先进的触觉感知能力.

结论:

  • 开发的SFBS为创建先进的皮肤等价物提供了实用方法.
  • 这项技术具有显著的潜力,可以提高机器人,假肢和智能设备的现实性和功能.
  • 一个与SFBS集成的康复手套显示了恢复中风患者感官反的潜力.