Neurophysiological modulations in the (pre)motor-motor network underlying age-related increases in reaction time and the role of GABA levels - a bimodal TMS-MRS study. - Stefanie Verstraelen; Koen Cuypers; Celine Maes; Melina Hehl; Shanti Van Malderen; Oron Levin; Mark Mikkelsen; Raf L. J. Meesen; Stephan P. Swinnen (NeuroImage, 2021)