Deep Work: Rules for Focused Success in a Distracted World · chapter 1 · id deep-work-c1-07-neuroscience-shows-that-focuse

“Neuroscience shows that focused practice builds myelin around neural circuits, improving skill acquisition. This provides the biological mechanism for why deep work is valuable.”

needs contextconfidence: high⚠ extracted by pipeline, re-audit pending

Receipts

Motor skill learning requires active central myelination -- Science (2014)paywalled — manual check queued
Motor skill learning stimulates generation of myelinating oligodendrocytes. Genetic blockade of oligodendrocyte differentiation strongly impairs training-induced improvements.
Oligodendrocyte dynamics dictate cognitive performance -- Nature Communications (2023)source alive
Performance in working memory tasks depends on oligodendrocyte genesis proportional to the number generated during training.

This claim is a stable, citable object. If you can falsify a verdict, tell us — corrections are loud here.