Metacontrol, Neurostimulation, & Personalized Care – Dr. Hommel & Dr. Colzato - #31 - Aug 30, 2025

Neurostimulation Podcast – Aug 30, 2025Guests: Professor Bernhard Hommel & Professor Lorenza ColzatoHost: Dr. Michael PassmoreEpisode Overview:In this episode, Dr. Passmore is joined by Professors Hommel and Colzato to discuss their recent research on metacontrol—the brain’s ability to balance persistence and flexibility—and how it can be modulated using paired anodal tDCS and methylphenidate. The conversation explores the implications of reducing cortical noise, the significance of the aperiodic EEG exponent, and the potential for individualized, biomarker-guided neurostimulation treatments.Key Topics:Definition and importance of metacontrol in cognitive functionThe spectrum between persistence and flexibility in the brainIndividual variability in cognitive control and its clinical relevanceThe study: combining anodal tDCS over the right inferior frontal cortex with methylphenidateFindings: reduction in cortical noise during task processing, indexed by a rise in the aperiodic EEG exponent (especially at fCZ)Implications for ADHD, OCD, and other disorders affecting attention and cognitive controlThe need for replication and standardization before clinical applicationCultural differences in treatment approaches (pharmacological vs. neurostimulation)The future of personalized, feedback-driven neurostimulation and neurofeedbackTakeaways:Metacontrol is a modifiable brain function, not just an abstract concept.Combined tDCS and methylphenidate can reduce cortical noise during tasks, with the aperiodic exponent as a promising EEG marker.The path to clinical application will require safety, individualization, and further research.Links & Resources:Study in Brain Stimulation Journal:https://www.brainstimjrnl.com/article/S1935-861X(25)00081-6/fulltextAdditional lab content and resources:https://www.bernhard-hommel.eu/enThe Metacontrol Lab YouTube channelhttps://www.youtube.com/@metacontrol-2024Disclaimer:This episode is for educational purposes only and does not constitute medical advice. Do not attempt brain stimulation or drug-device combinations outside of supervised clinical research.Connect:If you enjoyed this episode, please like, subscribe, and leave your questions or comments below. Let us know what topics you’d like to hear about in future episodes!