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Information content and reward processing in the human striatum during performance of a declarative memory task
Elizabeth Tricomi1, Julie A Fiez
1Department of Psychology, Rutgers University, 353 Smith Hall, 101 Warren Street, Newark, NJ 07102, USA. etricomi@psychology.rutgers.edu
Cognitive, Affective & Behavioral Neuroscience
|December 24, 2011
Summary
Negative feedback
Area of Science:
- Neuroscience
- Cognitive Psychology
Background:
- Negative feedback is crucial for learning and task mastery.
- The caudate nucleus plays a role in processing feedback.
- The amount of information in feedback may influence its processing.
Purpose of the Study:
- To investigate how the amount of information in negative feedback affects processing in the caudate nucleus.
- To examine the relationship between brain activity during feedback processing and learning outcomes.
Main Methods:
- A paired-associate learning task was used.
- The number of response options was manipulated (two vs. four) to vary information content.
- Caudate nucleus activity was measured using fMRI.
- Behavioral measures, including posttest confidence, were recorded.
Main Results:
- Caudate nucleus activation by negative feedback was similar to positive feedback with two options.
- With four options, negative feedback showed reduced caudate nucleus activation.
- Positive feedback was linked to higher posttest confidence.
- Caudate activity correlated with confidence levels following positive feedback.
Conclusions:
- Feedback processing in the caudate nucleus is context-dependent.
- Striatal feedback processing contributes to strengthening declarative memory representations.
- The information content of feedback modulates neural responses.
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