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相关概念视频

Parallel Processing01:20

Parallel Processing

252
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...
252
False Memories01:18

False Memories

150
False memories represent a cognitive distortion in which individuals recall events that did not happen, or remember them in an altered form. This phenomenon highlights the brain's constructive nature in processing and recalling memories, emphasizing that memory is not a perfect representation of past events but rather a dynamic reconstruction influenced by various factors.
One primary source of false memories is misattribution, where individuals incorrectly associate external information...
150
Perceptual Constancy01:12

Perceptual Constancy

593
Perceptual constancy is the ability to recognize that objects remain consistent and unchanged even when their appearance varies due to changes in sensory input. There are four main types of perceptual constancy: size constancy, shape constancy, color constancy, and brightness constancy.
Size constancy is the recognition that an object remains the same size, even when its image on the retina changes. For instance, a bus is perceived to be large enough to carry people, even if it looks tiny from...
593
Dark Triad and Person Perception01:29

Dark Triad and Person Perception

5
Person perception is influenced by both external behaviors and the observer’s internal characteristics, including personality traits. Individuals with dark personality traits, comprising psychopathy, Machiavellianism, and narcissism — collectively known as the dark triad – exhibit manipulative and exploitative tendencies in social contexts. These traits affect how they perceive others and how they are perceived.The Role of Dark Personality Traits in Person PerceptionBlack et...
5
Gestalt Principles of Perception01:21

Gestalt Principles of Perception

488
Gestalt principles provide a framework for understanding how humans perceive objects as unified wholes within their context. These principles are essential in explaining the cognitive processes that make sense of complex visual stimuli by organizing them into coherent groups. One fundamental principle is proximity, which posits that objects located close to each other are perceived as a collective group. For instance, when dots are positioned near one another, the visual system interprets them...
488
Perception01:28

Perception

598
Perception is a fundamental psychological process that enables individuals to organize, interpret, and consciously experience sensory information. This process is crucial for understanding and interacting with the world around us. It includes both bottom-up and top-down processing, each playing a distinct role in how we perceive our environment.
Bottom-up processing begins at the sensory level, where receptors detect external environmental stimuli. These could include the tactile sensation of...
598

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相关实验视频

Updated: Sep 19, 2025

Methods to Explore the Influence of Top-down Visual Processes on Motor Behavior
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共享和分歧的神经动力学 背后的虚假和真实的感知.

Joost Haarsma1, Dorottya Hetenyi2, Peter Kok2

  • 1Department of Imaging Neuroscience, UCL Queen Square Institute of Neurology, University College London, London WC1N 3AR, United Kingdom joost.haarsma@maastrichtuniversity.nl.

The Journal of neuroscience : the official journal of the Society for Neuroscience
|June 5, 2025
PubMed
概括

错误的感知,就像在噪音中看到格子一样,涉及类似于真实的大脑信号. 对错误感知的高度信心独特地涉及到增加的声望蛋白α/β大脑波功率.

关键词:
在MEGEG中,MEG是MEG.解码的解码方法是幻觉 幻觉 幻觉 幻觉 幻觉波动的振荡 波动的振荡预测编码的预测编码.

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Creating Virtual-hand and Virtual-face Illusions to Investigate Self-representation
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相关实验视频

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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
  • 视觉感知 视觉感知 视觉感知

背景情况:

  • 虚假的视觉感知可以像真实的感知一样令人信服,表明重叠的神经机制.
  • 错误的感知可能源于内部生成的信号,与外部刺激不同.

研究的目的:

  • 为了调查真实和虚假视觉感知之间的神经重叠.
  • 分析大脑如何处理真假感知中的内容歧视和检测.
  • 识别与高自信错误感知相关的独特神经特征.

主要方法:

  • 应用多变量分析对人类磁脑电图 (MEG) 数据.
  • 参与者执行了一个视觉歧视任务,并没有实际的格子刺激.
  • 只有噪音的试验是为了排除外部定向信号而设计的.

主要成果:

  • 解码分析确定了与错误感知内容相对应的感觉信号.
  • 高信心的错误感知,与真实感知不同,与增加的威望素α/β功率 (11-14 Hz) 相相关.
  • 对于虚假和真实的感知,观察到一种对刺激存在的信心的共享神经代码.

结论:

  • 虚假的视觉感知是由神经信号支持的,用于感觉内容和检测,反映真实感知.
  • 增加的威望素α/β功率是高自信错误感知的一个独特的神经相关物,可能表明自上而下的影响.