相关实验视频
Updated: Jul 12, 2025

07:13
A Two-interval Forced-choice Task for Multisensory Comparisons
Published on: November 9, 2018
11.0K
动态模式和神经模式的过渡是感知决策的基础
bioRxiv : the preprint server for biology
|October 31, 2023
概括
研究人员发现了感知决策的两阶段过程,涉及感官输入,其次是承诺的自主动态. 这揭示了感官证据不再影响选择的关键时刻.
科学领域:
- 神经科学是一个神经科学.
- 计算神经科学是一种神经科学.
- 决策科学 决策科学 决策科学
背景情况:
- 感知决策依赖于感官刺激来指导行动.
- 吸引网络被假设为调解这个过程,但它们在行为中的作用尚不清楚.
研究的目的:
- 为了调查潜在的感知决策的神经动态.
- 确定具体的神经机制和决策承诺的时间.
主要方法:
- 利用无监督的深度学习方法来分析来自老鼠额叶皮层和条纹体的同时神经活动.
- 在涉及积累脉动性听觉证据的任务期间记录的神经活动.
主要成果:
- 确定了两个连续的动态模式:感官输入主导和自主动态.
- 提出的第二个制度代表了决策承诺,其特点是独特的"神经模式".
- 开发了一个模型,从神经活动中推断内部决策承诺时间 (nTc),显示 nTc 不影响决策后的证据.
结论:
- 感知选择形成涉及神经动态和模式的快速,协调的过渡.
- 推断的决策承诺时间 (nTc) 为剖析决策过程中的内部状态变化提供了一个关键标记.
更多相关视频
07:34Perceptual and Category Processing of the Uncanny Valley Hypothesis' Dimension of Human Likeness: Some Methodological Issues
Published on: June 3, 2013
17.4K
10:35Multi-layer Cortical Ca2+ Imaging in Freely Moving Mice with Prism Probes and Miniaturized Fluorescence Microscopy
Published on: June 13, 2017
31.2K
相关概念视频
Reason and Intuition
6.5K
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...
6.5K
Perception
479
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...
Bottom-up processing begins at the sensory level, where receptors detect external environmental stimuli. These could include the tactile sensation of...
479
Perceptual Constancy
411
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...
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...
411
Subliminal Perception
273
Subliminal perception refers to the processing of sensory information that occurs below the level of conscious awareness. Researchers study subliminal perception by presenting a stimulus, such as a word or image, very quickly, typically around 50 milliseconds. This rapid presentation is often followed by another stimulus, such as a pattern of dots or lines, which blocks further mental processing of the initial stimulus. As a result, if participants cannot identify the initial stimulus better...
273
Sensory Perception: Organization of the Somatosensory System
3.0K
The somatosensory system is the central and peripheral nervous system component that senses and processes touch, pressure, pain, temperature, and body position or proprioception. The process of sensation takes place at three levels:
The receptor level:
The receptor level is the first stage of sensation. It involves the detection of a stimulus by specialized sensory receptors. The stimulus must arrive within the receptor's receptive field. Next, the receptor converts the energy of the...
The receptor level:
The receptor level is the first stage of sensation. It involves the detection of a stimulus by specialized sensory receptors. The stimulus must arrive within the receptor's receptive field. Next, the receptor converts the energy of the...
3.0K
Factors Affecting Perception
1.6K
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...
An illustrative example of a perceptual set is the scenario where an airline pilot told...
1.6K