Effects of Brain Stimulation on Card Sorting Task Performance
Author Information
Author(s): Ko Ji Hyun, Monchi Oury, Ptito Alain, Petrides Michael, Strafella Antonio P.
Primary Institution: Montreal Neurological Institute, McGill University
Hypothesis
Does stimulation of the dorsolateral prefrontal cortex influence monitoring of working memory without interfering with other executive functions?
Conclusion
Stimulation of the dorsolateral prefrontal cortex during feedback significantly impaired performance on the Wisconsin Card Sorting Task.
Supporting Evidence
- rTMS applied during feedback impaired performance on the WCST.
- Timing of rTMS application was crucial for its effects on task performance.
- Participants were trained on the WCST before the rTMS sessions.
Takeaway
When scientists used a special brain stimulation on a part of the brain that helps with memory, it made people do worse on a card-matching game when they got feedback.
Methodology
The study used repetitive transcranial magnetic stimulation (rTMS) on the dorsolateral prefrontal cortex and a control site while participants performed the Wisconsin Card Sorting Task.
Potential Biases
Potential biases may arise from the small sample size and the specific demographic of participants.
Limitations
The study's findings may not generalize beyond the specific tasks and conditions tested.
Participant Demographics
Ten healthy right-handed subjects aged 19-33 with no neurological or psychiatric disorders.
Statistical Information
P-Value
p = .023
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
Want to read the original?
Access the complete publication on the publisher's website