Rethinking excitation/inhibition balance in the human brain

Abstract

The balance between neural excitation (E) and inhibition (I) shapes cognition, development and brain-based disorders. Electroencephalography and magnetic resonance spectroscopy allow non-invasive quantification of the E/I ratio but yield discrepancies that challenge their use in this context. Addressing these differences is essential for advancing biomarkers and brain-based therapies.