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相关概念视频

Long-term Potentiation01:35

Long-term Potentiation

Long-term potentiation, or LTP, is one of the ways by which synaptic plasticity—changes in the strength of chemical synapses—can occur in the brain. LTP is the process of synaptic strengthening that occurs over time between pre- and postsynaptic neuronal connections. The synaptic strengthening of LTP works in opposition to the synaptic weakening of long-term depression (LTD) and together are the main mechanisms that underlie learning and memory.
Higher Mental Functions of Brain: Learning and Memory01:26

Higher Mental Functions of Brain: Learning and Memory

Memory is one of the most vital higher mental functions of the brain. Memory is closely related to learning because it enables us to retain information and experiences from our past to use them in our present life. It also helps us to remember facts, events, and skills, such as riding a bike or swimming. There are two types of memory — declarative memory, which involves memorizing facts or events, and procedural memory, which enables us to remember how to do something like writing or playing an...
Cerebral Hemispheres01:05

Cerebral Hemispheres

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...
Organization of the Brain01:30

Organization of the Brain

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...
Long-term Potentiation01:25

Long-term Potentiation

Long-term potentiation, or LTP, is one of the ways by which synaptic plasticity—changes in the strength of chemical synapses—can occur in the brain. LTP is the process of synaptic strengthening that occurs over time between pre and postsynaptic neuronal connections. The synaptic strengthening of LTP works in opposition to the synaptic weakening of long-term depression (LTD) and together are the main mechanisms that underlie learning and memory.
Hebbian LTP
LTP can occur when presynaptic neurons...
Neuroplasticity01:01

Neuroplasticity

Neuroplasticity reflects the brain's remarkable capacity to adapt and evolve, responding dynamically to learning, experiences, or injury by reorganizing its neural circuitry. This reorganization involves creating new neural connections and refining old ones through a series of biological processes that contribute to the brain's lifelong development and adaptability.

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单侧条形深脑刺激改善认知控制.

Elizabeth M Sachse, Evan M Dastin-van Rijn, Jonathan P Bennek

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    此摘要是机器生成的。

    单边深度大脑刺激 (DBS) 有效地改善了认知控制,匹配双边刺激.

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    科学领域:

    • 神经科学是一个神经科学.
    • 精神疾病 精神疾病
    • 深度大脑刺激 深度大脑刺激

    背景情况:

    • 腹腔囊/腹腔条纹体 (VCVS) 的深度大脑刺激 (DBS) 通过增强认知控制来治疗强迫症等精神疾病.
    • 由于对刺激参数和目标如何影响神经活动和行为的不完全理解,VCVS DBS的临床疗效受到限制.
    • 之前的研究使用认知控制建立了VCVS DBS的临床前模型,但没有解决在人类中观察到的横向性影响.

    研究的目的:

    • 在VCVS DBS的动物模型中研究横向性效应,特别是比较单边和双边的中条纹体刺激.
    • 为了确定单边刺激是否可以改善认知控制,类似于双边刺激.
    • 为了检查认知控制的性别差异,从刺激中改善认知控制.

    主要方法:

    • 利用动物模型研究认知控制,这是精神疾病中受损的关键决策组成部分.
    • 进行了右和左单侧中条纹体刺激,并评估了对反应时间和准确性的影响.
    • 采用计算建模来分析刺激如何改变决策变量.

    主要成果:

    • 右侧和左侧单侧刺激都通过减少响应时间而改善认知控制,而不会影响准确性.
    • 这些发现复制了之前研究中双边刺激观察到的认知控制改善.
    • 计算建模表明,单边和双边刺激调节相同的决策变量.
    • 女性在刺激后表现出与男性相同的认知控制改善.

    结论:

    • 在动物模型中,单边中条纹体刺激在增强认知控制方面与双边刺激同样有效.
    • 这证实了动物模型用于研究DBS机制的有效性,并表明单边刺激可能提供治疗优势.
    • 研究结果证实,性行为不会影响通过刺激改善认知控制,为DBS疗法提供了关键的见解.