相关实验视频
Updated: May 24, 2025

09:31
Touchscreen Sustained Attention Task SAT for Rats
Published on: September 15, 2017
9.7K
与前脑和脑干神经调节核的注意力依赖性合在整个寿命中不同
Nicholas G Cicero1, Elizabeth Riley2, Khena M Swallow2
1Department of Psychology, Cornell University, Ithaca, NY, 14853, USA. ngc26@cornell.edu.
GeroScience
|March 4, 2025
概括
脑子 脑子 脑子 脑子
科学领域:
- 神经科学是一个神经科学.
- 认知科学 认知科学
- 衰老研究研究 衰老研究
背景情况:
- 注意状态对学习和记忆至关重要,受皮层下神经调节系统的影响,如基础前脑 (BF) 和 (LC).
- 这些关键的大脑区域是第一个表现出与年龄相关的变化,可能会影响认知功能.
- 了解BF,LC和皮质目标 (后侧环状皮质,海马体) 在整个生命周期之间的相互作用至关重要.
研究的目的:
- 研究BF和LC神经调节核及其皮质点之间的功能连接在年轻人和老年人.
- 检查注意力和行为突出如何影响不同年龄段的这种连接.
- 确定神经调节系统角色的年龄相关变化及其对神经认知衰老的影响.
主要方法:
- 功能磁共振成像 (fMRI) 在听觉目标区分任务中使用.
- 在年轻人 (19-45岁) 和老年人 (66-86岁) 中分析了依赖任务的功能连接性.
- 检查了与目标和分心器处理相关的连接模式.
主要成果:
- 在年轻的成年人中,BF连接与目标处理相关,而LC连接与分心处理有关.
- 这些角色在老年人中是反向的,LC连接与目标处理相关,BF与分心处理相关.
- 在相关的亚核 (Meynert的基底核,中间隔膜核) 中观察到与年龄相关的连接模式,中年成年人显示过渡模式.
结论:
- 皮下神经调节系统 (BF和LC) 在处理注意力突出时表现出不同的和年龄逆转的角色.
- 老年人对行为上无关紧要的干扰因素的突出性增加,这可能是由反向的BF-LC功能合驱动的.
- 这些功能连接的寿命差异可能会导致衰老中的广泛皮质变化;中年是一个潜在的干预窗口.
更多相关视频
相关概念视频
Diencephalon: Hypothalamus and Coordination
1.3K
The hypothalamus is a small yet highly complex and essential brain region that plays a crucial role in regulating various bodily functions. Anatomically, it is located at the base of the brain, just above the brainstem and below the thalamus, forming part of the limbic system.
The hypothalamus interacts with other brain regions, including the pituitary gland, through a direct physical connection called the hypothalamic-pituitary axis. The hypothalamus receives somatic and visceral inputs and...
The hypothalamus interacts with other brain regions, including the pituitary gland, through a direct physical connection called the hypothalamic-pituitary axis. The hypothalamus receives somatic and visceral inputs and...
1.3K
Neurotransmitters
767
Neurotransmitters are essential chemical messengers within the nervous system, facilitating the communication between neurons. These chemical messengers, varying in function and effect, are critical for sustaining various aspects of neurological health and emotional well-being.
767
Organization of the Brain
690
The brain is an integral component of the nervous system and serves as the center for processing sensory inputs, making decisions, and directing bodily actions. This complex organ is organized into three primary sections: the hindbrain, midbrain, and forebrain, each responsible for a range of vital functions.
Hindbrain
The hindbrain, located at the base of the brain, plays a vital role in regulating automatic processes that sustain life. It includes the medulla oblongata, which is essential for...
Hindbrain
The hindbrain, located at the base of the brain, plays a vital role in regulating automatic processes that sustain life. It includes the medulla oblongata, which is essential for...
690
Diencephalon: Anatomical Regions
1.5K
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...
1.5K
Brainstem
1.6K
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...
1.6K
Functional Brain Systems: Reticular Formation
1.5K
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...
1.5K

