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相关概念视频

Long-term Depression01:03

Long-term Depression

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Long-term depression, or LTD, is one of the ways by which synaptic plasticity—changes in the strength of chemical synapses—can occur in the brain. LTD is the process of synaptic weakening that occurs over time between pre and postsynaptic neuronal connections. The synaptic weakening of LTD works in opposition to synaptic strengthening by long-term potentiation (LTP) and together are the main mechanisms that underlie learning and memory.
Calcium Ion Concentration Mechanism
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Long-term depression, or LTD, is one of the ways by which synaptic plasticity—changes in the strength of chemical synapses—can occur in the brain. LTD is the process of synaptic weakening that occurs over time between pre and postsynaptic neuronal connections. The synaptic weakening of LTD works in opposition to synaptic strengthening by long-term potentiation (LTP) and together are the main mechanisms that underlie learning and memory.
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Depressive Disorders: Etiology01:27

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Depressive disorders result from a complex interplay of biological, psychological, and sociocultural factors, each contributing uniquely to the development and persistence of the condition. Understanding these factors provides critical insight into the multifaceted nature of depression.
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G-protein coupled receptors are ligand binding receptors that indirectly affect changes in the cell. The actual receptor is a single polypeptide that transverses the cell membrane seven times creating intracellular and extracellular loops. The extracellular loops create a ligand specific pocket which binds to neurotransmitters or hormones. The intracellular loops holds onto the G-protein.
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Depression is a prevalent mental illness marked by persistent sadness and lack of interest in previously enjoyable activities. It can take several forms, including major depression, persistent depressive disorder, and bipolar I and II disorders. Symptoms range from emotional changes like chronic worry to physical changes like sleep disturbances and suicidal thoughts. From a neurobiological perspective, depression is believed to be triggered by abnormalities in the brain's prefrontal cortex,...
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Electroconvulsive therapy (ECT), or shock therapy, remains a critical biomedical intervention for severe, treatment-resistant depression. While its origins can be traced back to Hippocrates' observations that malaria-induced convulsions alleviated mental illness, modern ECT has evolved significantly from its earlier, more primitive applications. First introduced in 1938 by Ugo Cerletti and his colleagues, ECT involves inducing controlled seizures using electrical currents. In its early...
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相关实验视频

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A New Method for Inducing a Depression-Like Behavior in Rats
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感应合和压缩中的功率波动.

Dimitrios A Pinotsis1, Sankaraleengam Alagapan2, Parisa Sarikhani2

  • 1Centre for Clinical, Social and Cognitive Neuroscience and Department of Psychology and Neuroscience, City St George's-University of London, London EC1V 0HB, United Kingdom.

Cerebral cortex (New York, N.Y. : 1991)
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概括

深度大脑刺激 (DBS) 暴露显示了持久的行为效应. 分析神经动态的新措施可以预测DBS治疗后的抑郁症症状严重程度.

关键词:
在 DBS 中,DBS 是 DBS 的代名词.利亚普诺夫指数的指数抑郁 抑郁症 抑郁症 抑郁症 是一种电场是指电场中的电场.

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Network Pharmacology and Validation of the Antidepressant Mechanisms of Qiangzhifang in a Chronic Restraint Stress-induced Depression Rat Model
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An Unpredictable Chronic Mild Stress Protocol for Instigating Depressive Symptoms, Behavioral Changes and Negative Health Outcomes in Rodents
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科学领域:

  • 神经科学是一个神经科学.
  • 计算精神病学是一种计算精神病学.
  • 生物物理学的生物物理.

背景情况:

  • 深度大脑刺激 (DBS) 有急性行为效应,在手术后仍然存在.
  • 局部场势 (LFP) 的β功率波动是抑郁症中DBS暴露的潜在生物标志物.
  • 这些功率波动背后的神经动力学需要详细的研究.

研究的目的:

  • 为了研究大脑功率波动和在手术内DBS后的大脑流动之间的关系.
  • 引入和验证用于量化神经动态的新型动态系统措施.
  • 探索这些措施作为抑郁症症状严重程度的生物标志物的潜力.

主要方法:

  • 分析来自 subcallosal cingulate皮层的局部场潜在 (LFP) 数据.
  • 应用两个新的动态系统指标:不稳定频率和相对漫游时间.
  • 测量与患者队列的汉密尔顿抑郁症评分表得分的相关性.

主要成果:

  • 不稳定频率和相对漫游时间捕捉神经活动和中等电场之间的相互作用.
  • 这些新型措施显示出在区分低和高的汉密尔顿抑郁症评分表得分方面有潜力.
  • 这些发现支持了关于压力下变化的电场的细胞电气合假设.

结论:

  • 新的动态系统测量可以描述与DBS后大脑漫游相关的神经动态.
  • 这些措施可以作为DBS后抑郁症症状严重性的生物标志物.
  • 需要进一步的研究来确认这些措施是否反映了快速抗抑郁作用的一般机制.