Changes in Brain Cell Excitability After Impulse Control Training in Rats
Author Information
Author(s): Hayton Scott J., Olmstead Mary C., Dumont Éric C.
Primary Institution: Queen's University, Kingston, Ontario, Canada
Hypothesis
The excitability of prelimbic neurons would be reduced to compensate for the increased glutamatergic transmission after impulse control training.
Conclusion
Training in an impulse control task decreased the excitability of certain brain neurons, which may help regulate behavior.
Supporting Evidence
- Training in the impulse control task decreased the excitability of layer V pyramidal neurons in the prelimbic region.
- Subjects trained in the Operant Control task showed increased excitability in infralimbic neurons.
- Excitability changes were correlated with performance on the impulse control task.
Takeaway
When rats learned to wait before pressing a lever for food, some brain cells became less excitable, which helps them control their impulses better.
Methodology
Rats were trained in a response inhibition task, and their brain cells' excitability was measured using whole-cell patch clamp recordings.
Potential Biases
Potential biases may arise from the specific training conditions and the limited demographic of the subjects.
Limitations
The study focused only on male rats and specific brain regions, which may limit the generalizability of the findings.
Participant Demographics
Thirty-nine male Long-Evans rats aged 21 post-natal days at the start of the experiment.
Statistical Information
P-Value
p<0.001
Statistical Significance
p<0.001
Digital Object Identifier (DOI)
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