在子大脑中,并行执行的动机循环
Alina Steinemer1, Annika Simon1, Onur Güntürkün1
1Department of Biopsychology, Institute of Cognitive Neuroscience, Faculty of Psychology, Ruhr University Bochum, Bochum, Germany.
The Journal of comparative neurology
|April 16, 2024
概括
类似于哺乳动物前额叶皮层的鸟类阴 (NCL) 具有明显的神经元群体,突出到骨和条纹体. 这些投影显示了特定的形态学和地形组织,揭示了并行的帕利奥运动环.
科学领域:
- 神经科学是一个神经科学.
- 比较认知能力的比较
- 鸟类大脑研究研究
背景情况:
- 尾侧 (NCL) 是鸟类状认知网络的关键组成部分,类似于哺乳动物前额皮层 (PFC).
- 该NCL对于工作记忆和决策等执行功能至关重要,位于感官和运动系统之间.
- 它向中间骨 (AI) 和中间条纹体 (MSt) 发送下降的前运动投影.
研究的目的:
- 调查下降NCL对AI和MSt的预测的组织.
- 确定向AI和MSt投射的NCL神经元是否构成一个单一或不同的群体.
- 分析这些投影的地形组织和形态,以及它们与其他下降路径的关系.
主要方法:
- 使用了逆行和逆行病毒追踪实验.
- 分析了与投影目标相关的神经元形态.
- 对AI和MSt的投影进行了地形绘制.
主要成果:
- 两个不同的神经元群体从NCL投射到AI和MSt,每个都有独特的形态.
- 在条形体中观察到一个弱的地形投影,而在AI中发现了一个强大的地形投影,具有明显的感觉终结场.
- 这项研究描述了NCL下降路径和来自hyperpallium apicale的路径之间的关系.
结论:
- 这些发现支持了平行动机循环的模型,这些循环将不同的感觉信息传递到下系统.
- 独特的投影模式表明NCL输出具有专门的角色.
- 这项研究提供了对鸟类运动系统的演变的见解,可能包括歌曲系统.
相关概念视频
Brainstem
2.0K
The brainstem, located inferior to the brain and superior to the spinal cord, serves as a bridge between the cerebrum and the spinal cord. It plays a vital role in relaying information and controlling critical life functions. It comprises three primary regions: the midbrain, pons, and medulla oblongata.
The Midbrain
The midbrain is located beneath the diencephalon and connects the cerebrum with the lower parts of the brain. The cerebral peduncles are prominent midbrain structures that house the...
The Midbrain
The midbrain is located beneath the diencephalon and connects the cerebrum with the lower parts of the brain. The cerebral peduncles are prominent midbrain structures that house the...
2.0K
Lateralization
329
Brain lateralization refers to the division of mental processes and functions between the two hemispheres of the brain, a phenomenon that optimizes neural efficiency and underpins complex abilities in humans. This specialization allows each hemisphere to perform tasks where it has a comparative advantage, facilitating more refined cognitive capabilities across different domains.
329
Lobes of the Cerebrum
638
The cerebral cortex, a critical structure of the brain, is intricately divided into two hemispheres, each consisting of four distinct lobes: occipital, temporal, frontal, and parietal. These lobes function cooperatively to regulate various cognitive and sensory functions, forming the basis of our complex neural capabilities.
Frontal lobe
The frontal lobes, located behind the forehead, are the command center of our brain, controlling personality, intelligence, and voluntary muscle movements....
Frontal lobe
The frontal lobes, located behind the forehead, are the command center of our brain, controlling personality, intelligence, and voluntary muscle movements....
638
Diencephalon: Thalamus and Information Relay
1.6K
The thalamus, often called “the gateway to the cerebral cortex,” is vital in processing and directing sensory and motor signals throughout the brain. Almost all inputs destined for the cerebral cortex, except for olfactory signals, are relayed through the thalamus. The thalamus is a sophisticated relay station, channeling information from various brain regions to the cerebral cortex, as well as a filter, prioritizing certain signals over others based on current physiological...
1.6K
Cerebellum: Anatomical Regions
1.6K
The cerebellum, also known as the "little brain," is located in the posterior cranial fossa, inferior to the tentorium cerebelli and dorsal to the brainstem. It plays a significant role in motor control, coordination, and proprioception.
Cerebellar Structure
Externally, the cerebellum features a highly convoluted surface with numerous folia (narrow ridges) separated by shallow sulci (grooves). The cerebellum is divided into two hemispheres by a thin median structure known as the vermis. The...
Cerebellar Structure
Externally, the cerebellum features a highly convoluted surface with numerous folia (narrow ridges) separated by shallow sulci (grooves). The cerebellum is divided into two hemispheres by a thin median structure known as the vermis. The...
1.6K
Cerebral Hemispheres
328
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...
328


