基于感知指令的多模式有害刺激的疼痛整合
Yu Zhang1,2, Yongkang Zhi1,2, Yu Zhang3
1State Key Laboratory of Cognitive Science and Mental Health, Institute of Psychology, Chinese Academy of Sciences, Beijing 100101, People's Republic of China.
Proceedings. Biological sciences
|June 24, 2025
概括
疼痛整合,而不仅仅是刺激强度,显著放大疼痛感知. 大脑成像显示,前皮质是大脑如何结合多种痛苦感觉的关键.
科学领域:
- 神经科学是一个神经科学.
- 疼痛感知研究 疼痛感知研究
- 感官整合研究 感官整合研究
背景情况:
- 人类不断地处理多个感官输入,疼痛强度通常会随着有害刺激的结合而增加.
- 综合多模式有害刺激到统一的疼痛体验的基础的神经机制尚未完全理解.
- 了解疼痛整合对于在复杂的现实场景中管理疼痛至关重要.
研究的目的:
- 研究来自多式有害刺激的疼痛整合的神经机制.
- 为了确定疼痛整合是否增强了感知,而不仅仅是对感官输入的简单总和.
- 为了识别参与处理综合疼痛信号的大脑区域.
主要方法:
- 四个实验使用多式有害刺激 (热,压力,电) 应用于脚部进行.
- 参与者接受了感知线索,以引导他们的注意力在刺激呈现期间.
- 功能磁共振成像 (fMRI) 用于观察疼痛整合期间的大脑活动.
主要成果:
- 疼痛整合显著增强了整体疼痛感知,超过了单个刺激的附加效应.
- 皮质前皮质被确定为参与疼痛整合的关键区域.
- 在这个过程中,前骨,角和侧皮层之间的连接是至关重要的.
- 脑前的脑活动与参与者的主观疼痛感知有很强的相关性.
结论:
- 疼痛整合是一种独特的过程,可以放大感知到的疼痛,而不仅仅是感官输入的总和.
- 前皮质在整合多模式有害信息方面发挥着独特的作用.
- 了解疼痛整合中的前性功能为临床疼痛管理策略提供了洞察力.
相关概念视频
01:44Nociception
29.5K
Nociception—the ability to feel pain—is essential for an organism’s survival and overall well-being. Noxious stimuli such as piercing pain from a sharp object, heat from an open flame, or contact with corrosive chemicals are first detected by sensory receptors, called nociceptors, located on nerve endings. Nociceptors express ion channels that convert noxious stimuli into electrical signals. When these signals reach the brain via sensory neurons, they are perceived as pain.
29.5K
01:20Pain
637
Pain serves as a critical warning signal that alerts the body to potential or actual harm. When mechanical pressure on the skin is intense, such as from a sharp pinch, the sensation transitions from touch to pain. Similarly, extreme temperatures, like a hot pot handle, convert the sensation of heat into pain. Pain can also result from overstimulation of other senses, such as blinding light, loud noise, or the intense heat from habañero peppers. This ability to sense pain is essential for...
637