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相关概念视频

Decision Making: Traditional Method01:14

Decision Making: Traditional Method

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The process of hypothesis testing based on the traditional method includes calculating the critical value, testing the value of the test statistic using the sample data, and interpreting these values.
First, a specific claim about the population parameter is decided based on the research question and is stated in a simple form. Further, an opposing statement to this claim is also stated. These statements can act as null and alternative hypotheses, out of which a null hypothesis would be a...
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Decision Making: P-value Method01:09

Decision Making: P-value Method

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The process of hypothesis testing based on the P-value method includes calculating the P- value using the sample data and interpreting it.
First, a specific claim about the population parameter is proposed. The claim is based on the research question and is stated in a simple form. Further, an opposing statement to the claim  is also stated. These statements can act as null and alternative hypotheses:  a null hypothesis would be a neutral statement while the alternative hypothesis can...
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Decision Making01:20

Decision Making

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Decision-making is a fundamental cognitive process that involves evaluating alternatives and selecting among them. This process can range from simple choices, such as deciding what to wear, to complex decisions, like choosing a major in college or a career path. The complexity of the decision often dictates the approach we use, which can be broadly categorized into two types: automatic and controlled decision-making.
Automatic decision-making is fast, intuitive, and relies on gut feelings...
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What is Evolutionary History?02:35

What is Evolutionary History?

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Scientists record evolutionary history by analyzing fossil, morphological, and genetic data. The fossil record documents the history of life on Earth and provides evidence for evolution. However, both fossil and living organisms offer evidence that outlines Earth’s evolutionary history.
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Convergent Evolution

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Evolution shapes the features of organisms over time, ensuring that they are suited for the environments in which they live. Sometimes, selection pressure leads to the rise of similar but unrelated adaptations in organisms with no recent common ancestors, a process known as convergent evolution.
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Multiple Allele Traits

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相关实验视频

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A System for Tracking the Dynamics of Social Preference Behavior in Small Rodents
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追踪一个单一选择的演变.

Bharath Chandra Talluri1, Hendrikje Nienborg1

  • 1Laboratory of Sensorimotor Research, National Eye Institute, National Institutes of Health, Bethesda, United States.

eLife
|October 21, 2024
PubMed
概括

同时测量数百个大脑神经元,发现漂移-扩散动态是决策过程的关键. 这项研究为认知神经机制提供了新的见解.

科学领域:

  • 神经科学是一个神经科学.
  • 认知科学 认知科学
  • 计算神经科学是一种神经科学.

背景情况:

  • 了解决策的神经基础是神经科学的一个基本挑战.
  • 之前的模型提出了各种神经机制,但直接证据将特定动态与决策联系起来是有限的.

研究的目的:

  • 研究灵长类动物决策背后的神经动态.
  • 为神经计算中漂移扩散模型的作用提供经验证据.

主要方法:

  • 在决策任务期间,前额叶皮质数百个神经元的同时电生理记录.
  • 分析神经活动模式及其与行为选择和反应时间的相关性.
  • 计算建模测试漂移-扩散动态与观察到的神经数据.

主要成果:

  • 神经活动表现出随着时间的推移逐渐积累的证据,与漂移-扩散模型一致.
  • 证据积累的速度因任务难度和决策信心而异.
  • 同时记录捕获了人口层面的动态,这些动态与漂移-扩散过程的预测非常相似.

结论:

  • 这些发现为漂移扩散动态作为神经决策的基本机制提供了强有力的支持.
关键词:
决策是做出决策的过程.漂移 - 扩散 - 漂移 - 扩散这些神经像素是神经像素.神经科学 神经科学顶层皮质 (parietal cortex) 是一个表面皮质.人口代码 人口代码反应时间反应时间.rhesus 子 子 子 子

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  • 同时的多神经元记录提供了一个强大的方法来揭示认知过程的神经基础.
  • 这项研究提升了我们对大脑如何整合信息来做出决定的理解.