脊柱体中部 Thalamic 输入到状体有助于早期行动学习
Emily T Baltz1, Jialin He2, Christina M Gremel3,2
1The Neurosciences Graduate Program, University of California San Diego, La Jolla, California 92093.
概括
脊椎中丘脑 (MD) 投射到条纹体对于学习新动作和适应行为至关重要. 这种途径有助于动物获得和更新行动控制策略.
科学领域:
- 神经科学是一个神经科学.
- 行为神经科学 行为神经科学
背景情况:
- 动作控制依赖于皮质体 - 基底回路来学习和更新动作应急情况.
- 中背丘脑 (MD) 通过前额叶皮层的相互作用参与意志控制,但其在条纹突出中的作用尚不清楚.
研究的目的:
- 为了研究中背脊丘脑 (MD) 投射到背脊中间条纹体 (DMS) 在意志行动控制中的贡献.
- 阐明MD→DMS途径在获取和适应应对行动应急情况中的作用.
主要方法:
- 利用小鼠模型研究两性情欲行动控制.
- 在新动作应急获取和适应过程中,在DMS内的MD终端记录了活性.
- 功能减弱的MD→DMS活动,以评估其对行为控制的必要性.
主要成果:
- 在DMS中MD终端活性 (MD→DMS) 编码了在初始学习新动作突发事件时的动作信息,随着经验的增长而下降.
- MD→DMS活动对于学习和利用对行动的应急控制至关重要.
- 减弱MD→DMS活动影响了勘探,促进了重复性行动,并阻止了适应不断变化的应急行动.
结论:
- 线条体中的MD投射对于基础的可塑性至关重要初始行动策略学习.
- 这些MD→DMS路径对意志行动控制有着显著的贡献,支持在应对不断变化的环境突发事件时获得适应性行为.
相关概念视频
Diencephalon: Thalamus and Information Relay
3.9K
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...
3.9K
Observational Learning
843
Albert Bandura's observational learning, also known as imitation or modeling, occurs when a person observes and imitates another's behavior. It is a quicker process than operant conditioning. A well-known example is the Bobo doll study, where children who saw an adult acting aggressively towards the doll were more likely to act aggressively when left alone, compared to those who observed a nonaggressive adult. Many psychologists view observational learning as a form of latent learning...
843
Associative Learning
1.3K
Associative learning is a fundamental concept in behavioral psychology, wherein a connection is established between two stimuli or events, leading to a learned response. This process is critical in understanding how behaviors are acquired and modified. Conditioning, the mechanism through which associations are formed, can be divided into two main types: classical conditioning and operant conditioning, each elucidating different aspects of associative learning.
Classical conditioning, also known...
Classical conditioning, also known...
1.3K
Cognitive Learning
1.0K
Cognitive learning is based on purposive behavior, incidental learning, and insight learning.
E. C. Tolman's theory of purposive behavior emphasizes that much behavior is goal-directed. He argued that to understand behavior, we must look at the entire sequence of actions leading to a goal. For instance, high school students study hard, not just due to past reinforcement but also to achieve the goal of getting into a good college.
Tolman introduced the idea that behavior is influenced by...
E. C. Tolman's theory of purposive behavior emphasizes that much behavior is goal-directed. He argued that to understand behavior, we must look at the entire sequence of actions leading to a goal. For instance, high school students study hard, not just due to past reinforcement but also to achieve the goal of getting into a good college.
Tolman introduced the idea that behavior is influenced by...
1.0K
Diencephalon: Anatomical Regions
4.9K
The diencephalon, etymologically translated as 'through brain,' plays an integral role as the conduit between the cerebrum and the vast extent of the nervous system. However, the olfactory system is an exception, as it interfaces directly with the cerebrum. The diencephalon, deeply ensconced beneath the cerebrum, primarily consists of three paired structures — the thalamus, hypothalamus, and epithelamus. It also includes accessory structures such as the subthalamus, which houses the...
4.9K
Instinctive Drift
660
Instinctive drift refers to the tendency of animals to revert to their innate behaviors despite repeated reinforcement. Breland and Breland demonstrated this concept in an experiment with a raccoon. The raccoon was trained to pick up two coins and place them in a container in exchange for food. Initially, the raccoon learned to associate the coins with food, making them a conditioned stimulus or a substitute for food. However, over time, the raccoon became less willing to put the coins into the...
660


