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相关概念视频

Circadian Rhythms and Gene Regulation02:19

Circadian Rhythms and Gene Regulation

The biological clock is involved in many aspects of regulating complex physiology in all animals. It was in 1935 when German zoologists, Hans Kalmus and Erwin Bünning, discovered the existence of circadian rhythm in Drosophila melanogaster. However, the internal molecular mechanisms behind the circadian clock remained a mystery until 1984, when Jeffrey C. Hall, Michael Rosbash, and Michael W. Young discovered the expression of the Per gene oscillating over a 24-hour cycle. In subsequent years,...
Timing and Consequences on Behavior01:08

Timing and Consequences on Behavior

In operant conditioning, the timing of reinforcement is crucial. For animals like rats and cats, immediate reinforcement (within a few seconds) is much more effective than delayed reinforcement. For example, a food reward for a rat needs to follow within 30 seconds of pressing a bar to be effective. 
Humans, however, can respond to delayed reinforcers. We often make decisions between immediate small rewards and delayed larger rewards. This ability to delay gratification is a significant factor...

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Dopamine and serotonin transients predict depressive symptom relief following deep brain stimulation of human subcallosal cingulate cortex.

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Experimenter evidence unmasking as a confound in optional stopping.

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相关实验视频

Updated: Jun 2, 2026

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

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亚秒和多秒多巴胺动态是人类时间感知变化的基础.

Renata Sadibolova1,2,3, Emily K DiMarco4,5, Angela Jiang5

  • 1Department of Psychology, Goldsmiths, University of London; London SE14 6NW, UK.

medRxiv : the preprint server for health sciences
|February 19, 2024
PubMed
概括
此摘要是机器生成的。

人脑中的多巴胺水平会影响我们对时间的感知. 快速的多巴胺信号会使时间间隔感觉更短,而缓慢的多巴胺变化会降低时间的准确性.

科学领域:

  • 神经科学是一个神经科学.
  • 认知心理学 认知心理学
  • 人类受试者研究研究

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Examination of Rapid Dopamine Dynamics with Fast Scan Cyclic Voltammetry During Intra-oral Tastant Administration in Awake Rats
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Author Spotlight: Exploring the Link Between Time Perception of Visual Stimuli and Reading Skills
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Author Spotlight: Exploring the Link Between Time Perception of Visual Stimuli and Reading Skills

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相关实验视频

Last Updated: Jun 2, 2026

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

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背景情况:

  • 时间的感知对于人类的认知和情感至关重要.
  • 多巴胺在计时中的作用已在动物模型中确立,但尚未在人类中直接研究.
  • 了解多巴胺对人类时间感知的影响是一个关键的研究差距.

结论:

  • 多巴胺动态,包括快速信号和更慢的变化,显著调节人类的时间感知.
  • 这些发现为主观时间的神经化学基础提供了新的见解.
  • 这项研究强调了多巴胺系统在意识时间体验中的复杂作用.