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相关概念视频

Behaviorism01:28

Behaviorism

2.4K
The field of behaviorism was pioneered by figures such as Ivan Pavlov, John B. Watson, and B.F. Skinner fundamentally shifted the focus of psychology to the observable and controllable aspects of human and animal behavior. This shift marked a critical evolution in the discipline, emphasizing scientific rigor and experimental methodology.
The core premise of behaviorism is its focus on observable behavior rather than internal thoughts or feelings. This approach argues that true scientific...
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Purposive Learning01:22

Purposive Learning

180
E. C. Tolman emphasized the purposiveness of behavior — the idea that much of our behavior is goal-directed. For instance, employees who aim for a promotion work diligently to meet their targets. Tolman argued that when classical conditioning and operant conditioning occur, the organism acquires certain expectations. In classical conditioning, a child might fear a dog because they expect it to bite. In operant conditioning, a person might consistently work overtime because they expect a...
180
Innate Behavior01:10

Innate Behavior

Innate BehaviorInnate behavior is a type of instinctive action that animals are born knowing how to perform, without needing to learn or practice. Examples include baby sea turtles heading straight for the ocean after hatching or spiders spinning webs without instruction. These behaviors are hardwired into their brains and bodies to support survival. Common innate behaviors include migration, hibernation, feeding reflexes, and courtship dances, which are automatic responses that help animals...
Reinforcement Schedules01:24

Reinforcement Schedules

227
Positive reinforcement is a powerful method for teaching new behaviors to both animals and humans. B.F. Skinner demonstrated this with his experiments using rats in a Skinner box. When a rat pressed a lever, it received a food pellet. This immediate reward encouraged the rat to repeat the behavior. This method, where a reward follows every instance of the behavior, is known as continuous reinforcement. It is highly effective for establishing new behaviors quickly.
Once a behavior is learned,...
227
Operant Conditioning01:21

Operant Conditioning

1.7K
Operant conditioning, a key concept in behavioral psychology, involves using reinforcement and punishment to alter the likelihood of a behavior being repeated. B.F. introduced this type of conditioning. Skinner focused on voluntary behaviors and the consequences that follow them, influencing whether these behaviors will be strengthened or diminished.
Reinforcement in operant conditioning can be positive or negative, both of which serve to increase the likelihood of a behavior. Positive...
1.7K
Law of Effect01:06

Law of Effect

1.5K
B.F. Skinner, a prominent figure in behavioral psychology, introduced operant conditioning by emphasizing the role of consequences in shaping behavior. This theory builds upon the law of effect proposed by Edward Thorndike, which posits that behaviors followed by satisfying outcomes are likely to be repeated. In contrast, those followed by unsatisfying outcomes are less likely to recur.
Edward Thorndike's foundational work involved studying learning in animals, particularly using puzzle...
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相关实验视频

Updated: Aug 14, 2025

Operant Sensation Seeking in the Mouse
08:39

Operant Sensation Seeking in the Mouse

Published on: November 10, 2010

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自发行为是通过强化而形成的,

Jeffrey E Markowitz1,2, Winthrop F Gillis1, Maya Jay1

  • 1Department of Neurobiology, Harvard Medical School, Boston, MA, USA.

Nature
|January 18, 2023
PubMed
概括

大脑中的多巴胺波动

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Pavlovian Conditioned Approach Training in Rats
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Three Laboratory Procedures for Assessing Different Manifestations of Impulsivity in Rats

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相关实验视频

Last Updated: Aug 14, 2025

Operant Sensation Seeking in the Mouse
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Operant Sensation Seeking in the Mouse

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科学领域:

  • 神经科学
  • 动物的行为

背景情况:

  • 动物自发行为是由大脑排序的动作模块组成的.
  • 控制自然,自我激励行为的神经机制仍然不清楚.

研究的目的:

  • 调查多巴胺在背侧条纹体 (DLS) 在自发行为中的作用.
  • 了解多巴胺波动如何塑造行为序列和模块表达.

主要方法:

  • 在露天探索中利用光度记录和光遗传学操纵.
  • 校准闭环光遗传学以精确控制多巴胺水平.

主要成果:

  • DLS中的多巴胺波动与自发行为模块序列相关.
  • 随着时间的推移,多巴胺会影响序列变化,模块强化和行为活力.
  • 由内源性多巴胺关系预测的光遗传多巴胺操纵效应在模块和个体之间有所不同.

结论:

  • DLS中的多巴胺可能充当教学信号,引导小鼠在序列生成过程中最大限度地增加多巴胺.
  • 这表明参与结构化任务的电路也形成了不受约束的自发行为.