相关实验视频

Updated: Jul 5, 2025

Three Laboratory Procedures for Assessing Different Manifestations of Impulsivity in Rats
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Three Laboratory Procedures for Assessing Different Manifestations of Impulsivity in Rats

Published on: March 17, 2019

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一个强化学习模型,用于逐步比率计划的选择轨迹

Keiko Ihara1, Yu Shikano1,2, Sae Kato1

  • 1Division of Brain Sciences, Institute for Advanced Medical Research, Keio University School of Medicine, Tokyo, Japan.

Frontiers in behavioral neuroscience
|January 25, 2024
PubMed
概括

一个新的坚持模式通过分析选择行为,而不仅仅是断点来更好地捕捉杆压力任务中的动机. 这个模型准确地预测了多巴胺变化和药物对动机的影响.

关键词:
选择粘性粘性的选择多巴胺是多巴胺的一种.纤维光度仪的光度仪.甲基胺的使用方法这里是鼠标鼠标鼠标鼠标鼠标鼠标.运行者调节条件奖励预测错误 奖励预测错误腹部的条纹体 腹部的条纹体

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Progressive-ratio Responding for Palatable High-fat and High-sugar Food in Mice11:16

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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.
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Role of Shaping in Operant Conditioning

Shaping is a technique used in operant conditioning to train complex behaviors by rewarding successive approximations toward the target behavior. This method is necessary because organisms are unlikely to perform complex behaviors spontaneously. Instead, shaping breaks down the desired behavior into small, manageable steps.
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Law of Effect

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.
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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. 
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In psychology, reinforcement is a key concept in behavior modification. B.F. Skinner demonstrated this with his experiments involving rats in what is known as a Skinner box. The rats learned to press a lever to receive food, a primary reinforcer that fulfilled their innate need for nourishment.
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