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相关概念视频

Somatosensation01:33

Somatosensation

36.7K
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.
36.7K
Somatosensory, Motor, and Association Cortex01:24

Somatosensory, Motor, and Association Cortex

559
The somatosensory cortex in the parietal lobes is crucial for interpreting sensory data such as touch, temperature, and proprioception. The somatosensory cortex, situated in the parietal lobes, plays a vital role in interpreting sensory information like touch, temperature, and proprioception—awareness of body position. This specialized brain region features an organized structure wherein neurons at the top primarily process sensations originating from the lower body. In contrast, those at...
559
Motor and Sensory Areas of the Cortex01:14

Motor and Sensory Areas of the Cortex

4.0K
The cerebral cortex, the brain's outermost layer, is pivotal in processing complex cognitive tasks, emotions, and various sensory inputs and executing voluntary motor activities. This intricate structure is divided into three primary functional areas: the motor areas, sensory areas, and association areas.
Motor Areas
The motor areas located in the frontal lobe are central to controlling voluntary movements. This region is further subdivided into the primary motor cortex and the premotor cortex....
4.0K
Association Areas of the Cortex01:21

Association Areas of the Cortex

5.5K
Association areas are regions of the cerebral cortex that do not have a specific sensory or motor function. Instead, they integrate and interpret information from various sources to enable higher cognitive processes such as memory, learning, and decision-making. Some key association areas include the following:
Prefrontal Association Area: This area is located in the frontal lobe and is involved in planning, decision-making, and moderating social behavior. It connects with primary motor areas,...
5.5K
Overview of Somatic Sensory Pathways01:29

Overview of Somatic Sensory Pathways

4.6K
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...
4.6K
Sensory Perception: Organization of the Somatosensory System01:11

Sensory Perception: Organization of the Somatosensory System

3.1K
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...
3.1K

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相关实验视频

Updated: Jul 21, 2025

Tactile Semiautomatic Passive-Finger Angle Stimulator TSPAS
04:40

Tactile Semiautomatic Passive-Finger Angle Stimulator TSPAS

Published on: July 30, 2020

3.0K

状皮层中的动态空间编码介导着触觉-运动转换.

Janina Klautke1, Celia Foster2,3, W Pieter Medendorp4

  • 1Biological Psychology and Neuropsychology, University of Hamburg, Hamburg, Germany.

Nature communications
|July 27, 2023
PubMed
概括
此摘要是机器生成的。

后顶层皮质 (PPC) 灵活地更新触摸的空间代码. 它整合了触觉位置和身体姿势来规划运动,这对于身体意识和互动至关重要.

更多相关视频

Investigating Object Representations in the Macaque Dorsal Visual Stream Using Single-unit Recordings
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Investigating Object Representations in the Macaque Dorsal Visual Stream Using Single-unit Recordings

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Design and Use of an Apparatus for Presenting Graspable Objects in 3D Workspace
09:11

Design and Use of an Apparatus for Presenting Graspable Objects in 3D Workspace

Published on: August 8, 2019

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相关实验视频

Last Updated: Jul 21, 2025

Tactile Semiautomatic Passive-Finger Angle Stimulator TSPAS
04:40

Tactile Semiautomatic Passive-Finger Angle Stimulator TSPAS

Published on: July 30, 2020

3.0K
Investigating Object Representations in the Macaque Dorsal Visual Stream Using Single-unit Recordings
07:08

Investigating Object Representations in the Macaque Dorsal Visual Stream Using Single-unit Recordings

Published on: August 1, 2018

8.4K
Design and Use of an Apparatus for Presenting Graspable Objects in 3D Workspace
09:11

Design and Use of an Apparatus for Presenting Graspable Objects in 3D Workspace

Published on: August 8, 2019

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科学领域:

  • 神经科学是一个神经科学.
  • 认知神经科学 认知神经科学
  • 人类运动控制人体运动控制

背景情况:

  • 触摸运动涉及整合触觉和自身感知信息.
  • 后壁皮质 (PPC) 涉及触觉处理和运动规划.
  • 在PPC中,触觉感知和运动控制之间的精确相互作用仍然不清楚.

研究的目的:

  • 为了研究后额叶皮质 (PPC) 如何表示触觉信息和运动目标.
  • 了解底层的神经机制转化感官输入到目标导向的运动.
  • 阐明PPC在整合身体自我意识的解剖学和空间参考框架中的作用.

主要方法:

  • 功能磁共振成像 (fMRI) 用于记录人类参与者的大脑活动.
  • 多声元模式分析 (MVPA) 应用于fMRI数据来解码神经表征.
  • 参与者在不同的空间和解剖结构中执行了涉及脚触觉刺激的任务,需要感官区分和运动反应.

主要成果:

  • 在感官处理过程中,触觉位置在前PPC中被解剖编码,在后PPC中被空间编码.
  • 在运动指令之后,PPC转移到仅仅以空间坐标表示运动目标.
  • 在PPC中观察到神经编码在感觉,基于规则和运动信息方面存在显著的重叠.

结论:

  • 根据任务需求,PPC在更新其空间表示方面表现出了显著的灵活性.
  • 这种神经灵活性可以将感官信息转化为适当的运动指令,以便与环境和自己的身体相互作用.
  • 这些发现凸显了PPC在传感运动整合和身体表现方面的关键作用.