Jove
Visualize
联系我们
JoVE
x logofacebook logolinkedin logoyoutube logo
关于 JoVE
概览领导团队博客JoVE 帮助中心
作者
出版流程编辑委员会范围与政策同行评审常见问题投稿
图书馆员
用户评价订阅访问资源图书馆顾问委员会常见问题
研究
JoVE JournalMethods CollectionsJoVE Encyclopedia of Experiments存档
教育
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab Manual教师资源中心教师网站
使用条款与条件
隐私政策
政策

相关概念视频

Prediction Intervals01:03

Prediction Intervals

2.2K
The interval estimate of any variable is known as the prediction interval. It helps decide if a point estimate is dependable.
However, the point estimate is most likely not the exact value of the population parameter, but close to it. After calculating point estimates, we construct interval estimates, called confidence intervals or prediction intervals. This prediction interval comprises a range of values unlike the point estimate and is a better predictor of the observed sample value, y. 
2.2K
Drugs Affecting Neurotransmitter Synthesis01:29

Drugs Affecting Neurotransmitter Synthesis

1.3K
Drugs affecting neurotransmitter synthesis can impact the adrenergic neuron and the synthesis of neurotransmitters. For example, α-methyltyrosine and carbidopa target specific enzymes involved in catecholamine synthesis. α-methyltyrosine inhibits the enzyme tyrosine hydroxylase, which converts tyrosine into dopamine. By blocking this enzyme, α-methyltyrosine reduces dopamine production and other catecholamines. Carbidopa, on the other hand, inhibits the enzyme dopa decarboxylase,...
1.3K
Random and Systematic Errors01:20

Random and Systematic Errors

10.9K
Scientists always try their best to record measurements with the utmost accuracy and precision. However, sometimes errors do occur. These errors can be random or systematic. Random errors are observed due to the inconsistency or fluctuation in the measurement process, or variations in the quantity itself that is being measured. Such errors fluctuate from being greater than or less than the true value in repeated measurements. Consider a scientist measuring the length of an earthworm using a...
10.9K
Accuracy and Errors in Hypothesis Testing01:13

Accuracy and Errors in Hypothesis Testing

189
Hypothesis testing is a fundamental statistical tool that begins with the assumption that the null hypothesis H0 is true. During this process, two types of errors can occur: Type I and Type II. A Type I error refers to the incorrect rejection of a true null hypothesis, while a Type II error involves the failure to reject a false null hypothesis.
In hypothesis testing, the probability of making a Type I error, denoted as α, is commonly set at 0.05. This significance level indicates a 5%...
189
Hindsight Biases01:12

Hindsight Biases

3.4K
Hindsight bias leads you to believe that the event you just experienced was predictable, even though it really wasn’t. In other words, you knew all along that things would turn out the way they did. Can you relate this to the phrase "Hindsight is 20/20" now? 
3.4K
Parkinson's Disease: Treatment01:24

Parkinson's Disease: Treatment

244
Neurodegenerative disorders, such as Parkinson's Disease (PD), involve the gradual and irreversible destruction of neurons in particular brain areas. These disorders exhibit standard features like proteinopathies, selective vulnerability of some neurons, and an interaction of intrinsic properties, genetics, and environmental influences in neural injury.
Parkinson's Disease is primarily a result of the loss of dopaminergic neurons in the substantia nigra pars compacta. The cornerstone of...
244

您也可能阅读

相关文章

通过共同作者、期刊和引用图与本文相关的文章。

排序
Same author

Dopamine in the ventral and tail of striatum supports global and local evaluation in reward-threat conflict.

bioRxiv : the preprint server for biology·2026
Same author

Human-level learning of complex novel tasks as theory-based modelling, exploration and planning.

Philosophical transactions. Series A, Mathematical, physical, and engineering sciences·2026
Same author

Artificial intelligence for science: The easy and hard problems.

Philosophical transactions. Series A, Mathematical, physical, and engineering sciences·2026
Same author

Spectral envelopes of facial movements predict intention, cortical representations, and neural prosthetic control.

bioRxiv : the preprint server for biology·2026
Same author

Stiefel Manifold Dynamical Systems for Tracking Representational Drift.

bioRxiv : the preprint server for biology·2026
Same author

Phasic dopamine drives conditioned responding beyond its role in learning.

bioRxiv : the preprint server for biology·2026
Same journal

Glycosylation in Alzheimer's disease.

Nature neuroscience·2026
Same journal

Neuropixels harness the light.

Nature neuroscience·2026
Same journal

Clarity in clearance pathways.

Nature neuroscience·2026
Same journal

Hypothalamic specification in a dish.

Nature neuroscience·2026
Same journal

Author Correction: A route for cerebrospinal fluid flow through leptomeningeal arterial-venous overlaps enables macromolecule and fluid shunting.

Nature neuroscience·2026
Same journal

Author Correction: Prefrontal engrams of long-term fear memory perpetuate pain perception.

Nature neuroscience·2026
查看所有相关文章

相关实验视频

Updated: Jun 19, 2025

Comprehensive Profiling of Dopamine Regulation in Substantia Nigra and Ventral Tegmental Area
09:54

Comprehensive Profiling of Dopamine Regulation in Substantia Nigra and Ventral Tegmental Area

Published on: August 10, 2012

25.8K

通过预测错误和超越解释多巴胺.

Samuel J Gershman1,2, John A Assad3, Sandeep Robert Datta3

  • 1Department of Psychology and Center for Brain Science, Harvard University, Cambridge, MA, USA. gershman@fas.harvard.edu.

Nature neuroscience
|July 25, 2024
PubMed
概括
此摘要是机器生成的。

对于奖励预测错误 (RPEs) 至关重要的相性多巴胺信号传递,需要一个概括的RPE概念来解释其多样化的功能,包括动物的升级,感官反应和动作选择.

更多相关视频

Errors as a Means of Reducing Impulsive Food Choice
07:07

Errors as a Means of Reducing Impulsive Food Choice

Published on: June 5, 2016

8.6K
Presynaptic Dopamine Dynamics in Striatal Brain Slices with Fast-scan Cyclic Voltammetry
08:49

Presynaptic Dopamine Dynamics in Striatal Brain Slices with Fast-scan Cyclic Voltammetry

Published on: January 12, 2012

21.9K

相关实验视频

Last Updated: Jun 19, 2025

Comprehensive Profiling of Dopamine Regulation in Substantia Nigra and Ventral Tegmental Area
09:54

Comprehensive Profiling of Dopamine Regulation in Substantia Nigra and Ventral Tegmental Area

Published on: August 10, 2012

25.8K
Errors as a Means of Reducing Impulsive Food Choice
07:07

Errors as a Means of Reducing Impulsive Food Choice

Published on: June 5, 2016

8.6K
Presynaptic Dopamine Dynamics in Striatal Brain Slices with Fast-scan Cyclic Voltammetry
08:49

Presynaptic Dopamine Dynamics in Striatal Brain Slices with Fast-scan Cyclic Voltammetry

Published on: January 12, 2012

21.9K

科学领域:

  • 神经科学是一个神经科学.
  • 计算精神病学是一种计算精神病学.
  • 行为生物学 行为生物学

背景情况:

  • 主导理论认为,相位多巴胺信号奖励预测错误 (RPEs).
  • 这种基于RPE的解释在解释所有观察到的多巴胺信号特性方面面临挑战.
  • 在科学文献中,对多巴胺作用的相互矛盾的解释仍然存在.

研究的目的:

  • 为解决对RPE理论的多巴胺信号传递的经验挑战.
  • 调和对多巴胺功能的现有解释.
  • 探索多巴胺信号传递的统一理论的前景.

主要方法:

  • 对RPE理论的三个关键经验挑战的分析:多巴胺激增,感觉/运动特征反应和行动选择影响.
  • 重新评估和概括预测错误的概念.
  • 讨论各种经验发现和复杂的多巴胺电路.

主要成果:

  • 一个通用的预测错误概念可以解决多巴胺激增,感觉/运动反应和动作选择.
  • 某些经验发现仍然需要在基本的RPE编码之外进行理论解释.
  • 多巴胺信号表现出多样化的功能和复杂的底层电路.

结论:

  • RPE理论,当适当修改和概括时,为理解关键多巴胺功能提供了一个强大的框架.
  • 需要进一步的理论发展,以涵盖多巴胺信号多样性的全谱.
  • 一个统一的理论必须整合多种多巴胺功能和涉及的复杂的神经回路.