主要和次级体感皮质有什么区别

这关键区别初级和次级体感皮质之间is that the primary somatosensory cortex is responsible for receiving and processing the sensory information coming from the躯体感官，，，，本体感受， 还有一些内脏感官，，，，while the secondary somatosensory cortex is responsible for spatial and tactile memory associated with sensory experiences.

当感觉受体受到刺激时，体形感觉起源。感觉受体主要位于皮肤，肌肉，关节和肌腱中。体感皮质是我们大脑的一部分，负责接收和处理来自体感官系统的感觉信息。体感皮质有三个主要部分。主要的体感皮质和次级体感皮质是其中两个。主要体感皮层接收外围感觉信息，而次级体感皮层存储并处理它们。

CONTENTS

1。概述和关键差异
2。什么是主要体感皮质
3。什么是次级体感皮质
4。相似性 - 初级和次级体感皮质
5。主要与次级体感皮质以表格形式
6。Summary – Primary vs Secondary Somatosensory Cortex

什么是主要体感皮质？

这primary somatosensory cortex is the area that receives sensory information from the somatic senses, proprioceptive senses, and visceral senses. This area is also known as S1, and it is located on the postcentralgyrus of the parietal lobe of the brain。Hence, the primary somatosensory cortex plays a vital role in processing afferent somatosensory information. Somatic sensations such as touch, pain, the position of the body, etc., are processed by the primary somatosensory cortex.

从结构上讲，主要的体感皮层由布罗德曼区1、2、3a和3b组成。区域3接收大部分体感输入。触摸感主要由3B区域处理，而区域3A则处理来自本体感受器的信息。区域3B将触摸信息发送到区域1和2进行进一步处理。区域1对于感知对象的质地很重要。区域2负责感知物体的大小和形状。它也负责本体感受。

Neurological disorders occur due to abnormal processing of somatosensory information by the primary somatosensory cortex. Examples of such kinds of diseases are stroke, Parkinson’s disease, dystonia and ataxia.

什么是次级体感皮质?

次级体感皮层是体感系统的一部分。它也称为S2。它位于外侧沟的上部的顶叶区域。实际上，它位于主要体感皮质的后部。与主要体感皮层类似，次级体感皮层负责处理体感信息。它响应体感和视觉刺激。据信S2参与执行高阶功能，例如感觉运动集成，两个身体两半的信息的整合，注意力，学习和记忆等。

Structurally, S2 consists of two parts: Brodmann areas 40 and 43. However, little information is available about the structural organization and function of the human secondary somatosensory cortex in comparison to the primary somatosensory cortex.

初级和次级体感皮质之间的相似性

• 初级和次级体感皮层是体感系统的两个部分。
• 这两个区域的神经元相似。
• 这两个区域的神经元对电刺激的反应幅度相似。
• 两者都位于大脑顶叶。
• 他们从事哺乳动物中的体感信息。

初级和次级体感皮质之间的差异

这primary somatosensory cortex is the part of the somatosensory system that receives and processes sensory information such as touch, temperature, vibration, pressure, and pain coming across the body. Meanwhile, the secondary somatosensory cortex is the part of the somatosensory system that is responsible for spatial and tactile memory associated with sensory experiences. So, this is the key difference between primary and secondary somatosensory cortex.

Besides, the primary somatosensory cortex is also known as S1, while the secondary somatosensory cortex is known as S2. S2 is located in the postcentral gyrus of the parietal lobe whereas S2 is located posterior to the primary somatosensory cortex in the upper part of the lateral sulcus. Moreover, S1 consists of Brodmann areas 1, 2, 3a, and 3b, while S2 consists of Brodmann areas 40 and 43.

以下信息图列出了与表格形式的主要体感皮质之间的差异，以与并排比较。

Summary – Primary vs Secondary Somatosensory Cortex

体感由几个皮质区域组成，包括一级和次级体感皮质。原发性体感皮层负责接收大部分体感输入，包括触摸，温度，振动，压力和疼痛等。虽然，次级体体皮层与具有感官体验相关的空间和触觉记忆有关。因此，这是一级和次级体感皮质之间的关键区别。

参考：

1. Raju，Harsha。“Neuroanatomy, Somatosensory Cortex。”StatPearls [Internet]., U.S. National Library of Medicine, 19 Nov. 2020.
2. Ruben，J。等。“Somatotopic Organization of Human Secondary Somatosensory Cortex。”OUP学术，牛津大学出版社，2001年5月1日。

图片提供：

1。“Blausen 0103大脑感觉和电机” By Blausen.com staff (2014). “Medical gallery of Blausen Medical 2014”;. WikiJournal of Medicine 1 (2). DOI:10.15347/wjm/2014.010. ISSN 2002-4436. – Own work（CC由3.0）通过Commons Wikimedia

2.“”Schematic of cortical areas involved with pain processing and fMRI cropped” Borsook D，Moulton EA，Schmidt KF，Becerra LR。衍生作品：Anthonyhcole（Talk） -(CC BY 2.0)通过Commons Wikimedia