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Related Concept Videos

Decision Making: P-value Method01:09

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The process of hypothesis testing based on the P-value method includes calculating the P- value using the sample data and interpreting it.
First, a specific claim about the population parameter is proposed. The claim is based on the research question and is stated in a simple form. Further, an opposing statement to the claim  is also stated. These statements can act as null and alternative hypotheses:  a null hypothesis would be a neutral statement while the alternative hypothesis can...
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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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Related Experiment Video

Updated: Jul 9, 2025

Continuous Theta Burst Stimulation of the Posterior Medial Frontal Cortex to Experimentally Reduce Ideological Threat Responses
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Dynamic prefrontal inhibition code mediates reward devaluation.

Yiyan Dong1, Qi Qin2, Yihui Cui2

  • 1Department of Neurology of Sir Run Run Shaw Hospital and School of Brain Science and Brain Medicine, Zhejiang University School of Medicine, Hangzhou 310058, China; Department of Neurology and International Institutes of Medicine, The Fourth Affiliated Hospital, Zhejiang University School of Medicine, Yiwu 322000, China; NHC and CAMS Key Laboratory of Medical Neurobiology, Zhejiang University, Hangzhou 310058, China.

Neuron
|December 7, 2023
PubMed
Summary
This summary is machine-generated.

Repeatedly consuming rewards reduces their pleasantness, a process known as reward devaluation. This study reveals that a weakened inhibitory response in the anterior cingulate cortex (ACC) drives this devaluation, with its overactivity linked to anhedonia.

Area of Science:

  • Neuroscience
  • Behavioral Science

Background:

  • Repeated exposure to rewards typically leads to a decrease in their subjective value, a phenomenon termed reward devaluation.
  • Understanding the neural mechanisms underlying reward devaluation is crucial for comprehending conditions like anhedonia.

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