
Progress in Neuro-Psychopharmacology and Biological Psychiatry, Год журнала: 2024, Номер 136, С. 111167 - 111167
Опубликована: Окт. 9, 2024
The combination of transcranial magnetic stimulation and electroencephalography (TMS-EEG) is emerging as a valuable tool for investigating brain functions in health disease. However, the detailed neural mechanisms underlying TMS-EEG responses, including TMS-evoked EEG potentials (TEPs) TMS-induced oscillations (TIOs), remain largely unknown. Combining with pharmacological interventions provides unique opportunity to elucidate roles specific receptor-mediated neurotransmissions these responses. Here, we investigated involvement muscarinic acetylcholine receptor (mAChR)-mediated cholinergic neurotransmission responses by evaluating effects mAChR antagonists on TEPs TIOs twenty-four healthy participants using randomized, placebo-controlled crossover design. were measured before after administering single oral dose scopolamine (a non-selective antagonist), biperiden (an M1 or placebo, TMS targeting left medial prefrontal cortex (mPFC), angular gyrus (AG), supplementary motor area (SMA). results indicated that mAChR-mediated played role TEPs, but not TIOs, target-specific manner. Specifically, significantly increased amplitude local TEP component between approximately 40 63 ms post-stimulus when was applied SMA, mPFC AG. Biperiden produced similar less pronounced effect. Importantly, independent those sensory-evoked caused TMS-associated sensory stimulation. These findings expand our understanding physiology, providing insights its application physiological clinical research.
Язык: Английский