Stimulation modulates gene-linked cell assemblies in the human brain

Key Points:

• Recent advances in direct electrical brain stimulation have demonstrated potential for enhancing human memory, with studies emphasizing the importance of closed-loop and biomarker-guided neuromodulation to improve functional networks and memory outcomes.
• Research on neuronal ensembles and cell assemblies reveals that memory traces are formed and modulated by dynamic patterns of neuronal excitability, gene expression, and synaptic plasticity, highlighting the complex interplay between neural activity and gene regulatory mechanisms.
• Astrocytes and glial cells play a critical role in neuromodulation and synaptic function during electrical brain stimulation, contributing to neurotransmitter release and network oscillations that support memory processes.
• Cutting-edge methodologies, including organotypic brain slice cultures, single-cell multiomic analyses, and advanced computational tools, are enhancing the understanding of human brain circuitry, cell-type diversity, and gene regulatory networks underlying memory and neuromodulation.
• Integration of electrophysiological data with transcriptomic and epigenomic profiling is paving the way for personalized neuromodulation therapies, aiming to optimize deep brain stimulation parameters and extend therapeutic benefits for memory-related disorders.