Early brainstem [18F]THK5351 uptake is linked to cortical hyperexcitability in healthy aging. - Van Egroo M; Chylinski D; Narbutas J; Besson G; Muto V; Schmidt C; Marzoli D; Cardone P; Vandeleene N; Grignard M; Luxen A; Salmon E; et al. (JCI insight, 2021)