在人类大脑的休息体运动区域中,手的视觉表现
Yara El Rassi1, Giacomo Handjaras1, Cristina Perciballi2
1IMT School for Advanced Studies Lucca, 55100, Lucca, Italy.
Scientific reports
|August 7, 2024
概括
在体运动皮层中休息的大脑活动反映了关于手的视觉信息. 这些区域的自发大脑活动模式编码了人手的视觉表现和使用.
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
- 发动机控制器的控制器
背景情况:
- 视觉信息处理对于运动控制,感知和注意力至关重要.
- 在体运动区域的自发大脑活动 (静止状态) 与与任务相关的活动相关,并可能编码环境的预测模型.
- 人体运动皮质整合了感觉和运动信息,以产生和控制运动.
研究的目的:
- 调查人类体运动皮层中自发活动是否受到手和非手物体的视觉刺激的调节.
- 为了确定手部刺激所代表的"使用"或行动是否会影响自发活动模式.
- 检查休息状态和任务唤起活动模式之间的相似性,以应对视觉手部刺激.
主要方法:
- 功能磁共振成像 (fMRI) 用于测量大脑活动.
- 多变量模式分析 (MVPA) 用于比较静止状态活动与任务唤起的模式.
- 刺激包括自然手,机器人手,手套和控制对象 (食物).
主要成果:
- 与其他刺激相比,在左体运动皮质的静止状态活动和自然手图像引起的模式之间发现了显著更强的空间相关性.
- 在视觉皮层中没有观察到显著的任务-休息相似性.
- 人体运动区域的自发活动模式对人手的视觉表现有敏感性.
结论:
- 人体运动皮层内的自发活动编码了人手的视觉表现.
- 这些发现表明,即使在休息状态下,大脑也会通过保持身体部位的表示及其潜在用途来为行动做准备.
- 这项研究强调了静止状态大脑活动在表示和预测与运动控制相关的感官信息中的作用.
更多相关视频
相关概念视频
01:33Somatosensation
36.5K
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.
36.5K
01:24Somatosensory, Motor, and Association Cortex
455
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...
455
01:14Motor and Sensory Areas of the Cortex
3.6K
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....
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....
3.6K
01:11Cerebrum: Anatomical Overview II
1.6K
Each cerebral hemisphere can be divided into three main regions. The outermost region, the cerebral cortex, is a thin layer (2 to 4 millimeters thick) made up of gray matter, consisting of neuron cell bodies, dendrites, glial cells, and blood vessels. The middle region, or white matter, is primarily composed of myelinated nerve fibers organized into three types of large tracts: association fibers, commissures, and projection fibers. Association fibers connect different areas within the same...
1.6K
01:21Association Areas of the Cortex
5.2K
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,...
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,...
5.2K
01:05Cerebral Hemispheres
308
The human brain, a complex organ, is functionally divided into two cerebral hemispheres—left and right. These hemispheres are interconnected by a structure of paramount importance, the corpus callosum. This substantial bundle of neural fibers is not just a bridge between the hemispheres but a crucial element for the brain's comprehensive functioning. It enables efficient communication between the two hemispheres, allowing each side of the brain to control and receive sensory and motor...
308