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相关概念视频

Reason and Intuition01:37

Reason and Intuition

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The human brain processes information for decision-making using one of two routes: an intuitive system and a rational system (Epstein, 1994; popularized by Kahneman, 2011 as System 1 and System 2, respectively). The intuitive system is quick, impulsive, and operates with minimal effort, relying on emotions or habits to provide cues for what to do next, while the rational system is logical, analytical, deliberate, and methodical. Research in neuropsychology suggests that the...
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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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Parallel Processing01:20

Parallel Processing

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The brain processes sensory information rapidly due to parallel processing, which involves sending data across multiple neural pathways at the same time. This method allows the brain to manage various sensory qualities, such as shapes, colors, movements, and locations, all concurrently. For instance, when observing a forest landscape, the brain simultaneously processes the movement of leaves, the shapes of trees, the depth between them, and the various shades of green. This enables a quick and...
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Factors Affecting Perception01:25

Factors Affecting Perception

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Perception is influenced by perceptual set, context, motivation, and emotion. Perceptual set, or perceptual expectancy, refers to the tendency to perceive things in a particular way, influenced by previous experiences and expectations. This phenomenon affects the interpretation of stimuli, creating a set of mental tendencies and assumptions that impact sensory perceptions of sound, taste, touch, and sight.
An illustrative example of a perceptual set is the scenario where an airline pilot told...
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Fixed Action Patterns01:06

Fixed Action Patterns

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A fixed action pattern (FAP) is a specific, hard-wired sequence of behaviors that occurs in response to an external stimulus, called a sign stimulus. The behavior is “fixed” because it is essentially unchangeable—proceeding similarly across individuals of a species every time it occurs.
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相关实验视频

Updated: May 27, 2025

Transferring Cognitive Tasks Between Brain Imaging Modalities: Implications for Task Design and Results Interpretation in fMRI Studies
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Transferring Cognitive Tasks Between Brain Imaging Modalities: Implications for Task Design and Results Interpretation in fMRI Studies

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对于相同的感知决策任务,多个大脑激活模式.

Johan Nakuci1, Jiwon Yeon2, Nadia Haddara3

  • 1School of Psychology, Georgia Institute of Technology, Atlanta, GA, USA. jnakuci@gmail.com.

Nature communications
|February 19, 2025
PubMed
概括
此摘要是机器生成的。

研究人员发现,相同的认知任务可以使用不同的大脑激活模式来执行. 这挑战了以前关于决策过程中大脑功能的假设,并揭示了隐藏的神经变异性.

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Cross-Modal Multivariate Pattern Analysis
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Cross-Modal Multivariate Pattern Analysis

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Correlating Behavioral Responses to fMRI Signals from Human Prefrontal Cortex: Examining Cognitive Processes Using Task Analysis
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Correlating Behavioral Responses to fMRI Signals from Human Prefrontal Cortex: Examining Cognitive Processes Using Task Analysis

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相关实验视频

Last Updated: May 27, 2025

Transferring Cognitive Tasks Between Brain Imaging Modalities: Implications for Task Design and Results Interpretation in fMRI Studies
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Transferring Cognitive Tasks Between Brain Imaging Modalities: Implications for Task Design and Results Interpretation in fMRI Studies

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Cross-Modal Multivariate Pattern Analysis
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Correlating Behavioral Responses to fMRI Signals from Human Prefrontal Cortex: Examining Cognitive Processes Using Task Analysis
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科学领域:

  • 神经科学是一个神经科学.
  • 认知科学 认知科学
  • 心理学 心理学 心理学

背景情况:

  • 描述影响认知和行为的内脑状态的变异是困难的.
  • 了解大脑如何完成具有一致结果但潜在不同神经过程的任务至关重要.

研究的目的:

  • 为了调查在同一任务中的不同试验中是否发生不同的大脑区域激活模式.
  • 使用功能性MRI (fMRI) 数据探索任务完成的神经基础.

主要方法:

  • 功能性MRI (fMRI) 用于在三个感知决策实验中记录大脑范围的信号.
  • 分析了试验对试验的大脑激活波动.
  • 在基于激活相似性的小组试验中,应用了模块化-最大化聚类.

主要成果:

  • 在所有实验中都发现了多种不同的和稳定的试验亚型.
  • 一个子类型显示显著的默认模式网络 (DMN) 激活,与对需要注意力的任务的预期相反.
  • 其他亚型在任务积极网络中表现出激活,但DMN亚型表现出类似的行为表现.

结论:

  • 同样的感知决策任务可以通过多个不同的大脑激活模式来执行.
  • 这表明神经灵活性和认知过程中隐藏的变异性比以前理解的更大.
  • 在任务执行过程中,默认模式网络的作用可能比通常假设的要复杂得多.