相关实验视频
Updated: Jul 23, 2025

07:13
A Two-interval Forced-choice Task for Multisensory Comparisons
Published on: November 9, 2018
11.0K
模式独立或模式特定? 常见的计算是视觉和听觉决策中信任判断的基础
Rebecca K West1, William J Harrison1,2, Natasha Matthews1
1School of Psychology, University of Queensland, Queensland, Australia.
PLoS computational biology
|July 14, 2023
概括
人类对决策的信心依赖于一种跨感官的共同的元认知过程. 这个过程根据感官不确定性和证据强度进行调整,表明统一而又可适应的信心评估.
科学领域:
- 认知神经科学 认知神经科学
- 计算神经科学是一种神经科学.
- 心理学 心理学 心理学
背景情况:
- 了解人类如何评估对自己决策的信心至关重要,但仍然不清楚.
- 现有的模型往往侧重于单一的感官模式,限制跨模式的洞察力.
研究的目的:
- 调查对感知决策的信心判断的计算机制.
- 确定这些机制是否在视觉和听觉模式之间一致.
主要方法:
- 在视觉和听觉分类任务中对信心判断的计算建模.
- 操纵证据的强度和感官不确定性.
- 缩放证据强度,非缩放证据强度和贝叶斯模型的比较.
主要成果:
- 参与者的信任判断与两种模式的规模化证据强度模型保持一致.
- 贝叶斯模型提供了一个较弱的解释,特别是对于复杂的任务.
- 感官不确定性显著影响信心评估.
结论:
- 一个统一的元认知过程是感官领域对感知决策的信心判断的基础.
- 这个共同的过程是通过模式特定的参数调来调节的.
- 感官不确定性在信心评估中起着至关重要的作用.
相关概念视频
Confidence Coefficient
7.7K
The confidence coefficient is also known as the confidence level or degree of confidence. It is the percent expression for the probability, 1-α, that the confidence interval contains the true population parameter assuming that the confidence interval is obtained after sufficient unbiased sampling; for example, if the CL = 90%, then in 90 out of 100 samples the interval estimate will enclose the true population parameter. Here α is the area under the curve, distributed equally under...
7.7K
Auditory Perception
384
The auditory system is essential for sound perception, utilizing various critical structures. When sound waves enter the outer ear, they travel through the ear canal and cause the eardrum to vibrate. These vibrations are then transmitted to the middle ear, where three tiny bones – the malleus, incus, and stapes – amplify the sound. This amplification is crucial, as it ensures that the sound vibrations are strong enough to be conveyed to the inner ear. These vibrations then reach the...
384
Interpretation of Confidence Intervals
6.0K
A confidence interval is a better estimate of the population than a point estimate, as it uses a range of values from a sample instead of a single value.
Confidence intervals have confidence coefficients that are crucial for their interpretation. The most common confidence coefficients are 0.90, 0.95, and 0.99, which can be written as percentages–90%, 95%, and 99%, respectively.
Suppose a person calculates a confidence interval with a confidence coefficient of 0.95. In that case, they can...
Confidence intervals have confidence coefficients that are crucial for their interpretation. The most common confidence coefficients are 0.90, 0.95, and 0.99, which can be written as percentages–90%, 95%, and 99%, respectively.
Suppose a person calculates a confidence interval with a confidence coefficient of 0.95. In that case, they can...
6.0K
Confirmation Biases
5.5K
The confirmation bias is the tendency to focus on information that confirms our existing beliefs and ignore information that is inconsistent with our expectations. For example, if you think that your professor is not very nice, you notice all of the instances of rude behavior exhibited by the professor while ignoring the countless pleasant interactions he is involved in on a daily basis. Have you ever fallen prey to the confirmation bias, either as the source or target of such bias?
5.5K
Perceiving Loudness, Pitch, and Location
241
The human brain perceives pitch through two primary mechanisms reflected in place theory and frequency theory. Each mechanism describes how sound waves are interpreted as specific pitches by the brain, offering insights into the intricate processes of auditory perception.
Place theory, or place coding, suggests that different pitches are heard because various sound waves activate specific locations along the cochlea's basilar membrane. The brain determines the pitch of a sound by...
Place theory, or place coding, suggests that different pitches are heard because various sound waves activate specific locations along the cochlea's basilar membrane. The brain determines the pitch of a sound by...
241
Confidence Intervals
6.6K
An unbiased point estimate is often insufficient to predict a population estimate, such as population mean or population proportion. In this scenario, a confidence interval is used. A confidence interval is an estimate similar to a sample proportion. However, unlike the point estimate which is a single value, the confidence interval contains a range of values. These values have lower and upper limits, known as confidence limits, and can be designated as L1 and L2, respectively.
A...
A...
6.6K

