Sleep spindle related modulation of cortical excitability and GABAergic inhibition probed by real-time phase-triggered paired-pulse TMS - Friederike Breuer; Katrin Himmerich; Sianna Groesser; Katrin Knietsch; Saman Seifpour; Anastasiia Grigoreva; Umair Hassan; Ulf Ziemann; Til Ole Bergmann (Brain Stimulation)