奖励系统中的静止状态功能连接在性刺激处理过程中调解皮质下集成
Carolina Fiederer1, Tara Chand2,3, Louise Martens1
1Department of Psychiatry, Eberhard Karls University, Tübingen, Germany.
概括
大脑的奖励系统中休息状态的功能连接,特别是中脑和内核之间 (NAcc),与处理色情刺激有关. 更高的连接性促进了参与性行为的皮下区域的激活.
科学领域:
- 神经成像是一种神经成像.
- 神经科学是一个神经科学.
- 人类的性行为.
背景情况:
- 情色刺激会激活大脑的奖励系统.
- 神经成像研究表明,在视觉性爱刺激期间会发生激活.
- 对于这些激活的静态网络架构存在有限的研究.
研究的目的:
- 为了研究在色情刺激处理过程中人类奖励系统的休息状态功能连接.
- 为了将静止状态的功能连接与与任务相关的神经激活相关联.
主要方法:
- 在37名健康的异性恋男性中,休息状态和与任务相关的fMRI组合.
- 使用色情和非色情视频片段进行基于任务的fMRI.
- 关联的神经元激活向量与休息状态功能连接 (rs-FC) 之间的核心 accumbens (NAcc) 和中脑.
主要成果:
- 在视觉性爱刺激期间观察到皮层和皮下区域的神经功能激活的增加.
- 发现中脑和NAcc之间的rs-FC增加.
- 较高的中脑-NAcc rs-FC与较大的神经元响应度相关,在下皮层区域,如下丘脑,丘脑和周水管灰色.
结论:
- 结果支持中边缘奖励通路在处理色情刺激中的作用.
- 上部中脑-NAcc rs-FC有助于同时激活对于性行为整合至关重要的皮质下区域.
更多相关视频
08:23A Multimodal Imaging- and Stimulation-based Method of Evaluating Connectivity-related Brain Excitability in Patients with Epilepsy
Published on: November 13, 2016
11.1K
08:36Dynamic Inter-subject Functional Connectivity Reveals Moment-to-Moment Brain Network Configurations Driven by Continuous or Communication Paradigms
Published on: March 21, 2019
7.2K
相关概念视频
Functional Brain Systems: Limbic System
The limbic system, often called the "emotional brain," is a complex set of structures located deep within the brain. The intricate network of the limbic system supports a wide range of psychological functions, from emotional regulation to memory formation and sensory processing. This functional brain region encompasses specific parts of the diencephalon and the cerebrum, integrating the higher mental functions of the cerebral cortex with the primitive emotional responses of the deep brain...
Functional Brain Systems: Reticular Formation
The reticular formation is a complex network of gray and white matter located within the brainstem extending from the medulla to the midbrain.
Within the reticular formation, there are several distinct nuclei that can be classified into three broad categories. The Raphe nuclei are located along the midline of the brainstem. They are primarily known for their role in synthesizing and releasing serotonin, a neurotransmitter involved in regulating mood, appetite, sleep, and circadian rhythms. The...
Within the reticular formation, there are several distinct nuclei that can be classified into three broad categories. The Raphe nuclei are located along the midline of the brainstem. They are primarily known for their role in synthesizing and releasing serotonin, a neurotransmitter involved in regulating mood, appetite, sleep, and circadian rhythms. The...
Optimal Arousal Theory
The optimal arousal theory suggests that performance is maximized when an individual experiences a moderate level of arousal. This theory is closely tied to the Yerkes-Dodson law, which illustrates an inverted U-shaped relationship between arousal and performance. The law, formulated by psychologists Robert Yerkes and John Dodson, implies an ideal arousal level for optimal performance, and deviations from this level can lead to declines in effectiveness.
Inverted U-Shaped Performance Curve
The...
Inverted U-Shaped Performance Curve
The...
