関連する実験動画

Updated: Sep 9, 2025

A Conflict Model of Reward-seeking Behavior in Male Rats
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A Conflict Model of Reward-seeking Behavior in Male Rats

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ドーパミンは報酬の予測を支援し,報酬の探求を抑制する

Melissa Malvaez1, Andrea Suarez1, Nicholas K Griffin1

  • 1Dept. of Psychology, UCLA, Los Angeles, CA 90095, USA.

bioRxiv : the preprint server for biology
|September 2, 2025
PubMed
まとめ

ドーパミンは 報酬を求める動機付けだけでなく 報酬の追求の仕方を形作ります このドーパミンの信号は 動物が報酬を予測し チェックし 戦略を磨くのに役立ちます

キーワード:
ファイバーフォトメトリー中核アキュンベンオプトジェネティクスパブロフの条件付けパブロフ型から楽器型への移行ベントラル・テグメンタル領域

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Drug dependence, abuse, and addiction are complex phenomena that can precipitate various abnormal states. Physical dependence refers to a state of pharmacological adaptation to a drug. This adaptation often results in tolerance—a reduced response to the drug after repeated administrations. When the drug use is abruptly stopped, withdrawal symptoms occur due to the body's need to readjust from the pharmacologically induced imbalance. However, tolerance and withdrawal symptoms do not...
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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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Incentive Theory: Pull Theory of Motivation

Incentive theory, or the "pull theory" of motivation, suggests that external rewards primarily drive behavior. Individuals are motivated to engage in activities when they anticipate a desirable outcome. This is why people often work hard for promotions or study intensively to achieve high grades. These incentives can be tangible, physical rewards such as money or promotions, or intangible, non-physical rewards like praise and social recognition.
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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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To diagnose ADHD, symptoms must manifest before age 12 and be evident across multiple settings....
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