The F3 zone is an electrode position in the international 10–20 EEG system, located over the left Dorsolateral Prefrontal Cortex (DLPFC). It is a primary target for tDCS and other neuromodulation protocols aimed at cognitive focus, working memory, and executive function.
Why F3
- •Left DLPFC — implicated in verbal working memory, planning, and cognitive control
- •Standard target — widely used in research for depression and cognition
- •Reproducible — 10–20 system allows consistent placement across sessions
In ONDA Life
The Electric Medicine article describes tDCS protocols targeting the F3 zone for cognitive focus.