Transcranial magnetic stimulation (TMS) is a widely used non-invasive brain stimulation technique. It represents an exciting new frontier in neuroscience research and can be used to examine neural processes, providing insights into pathophysiology and treating a variety of neuropsychiatric illnesses. A Practical Guide to Transcranial Magnetic Stimulation Neurophysiology and Treatment Studies presents an overview of the use of TMS as both an investigational tool and as treatment for neurological and psychiatric disorders. The chapters include an overview of the history and basic principles of TMS and repetitive TMS (rTMS), the different types of TMS coils, different stimulation approaches, the use of neuronavigation, and safety considerations. The utility of single and paired TMS techniques to measure cortical inhibition, facilitation, connectivity and reactivity in motor and non-motor brain areas, the different methods of using TMS to induce brain plasticity, and use of TMS in cognitive studies are explored. It also covers TMS and rTMS combined with electroencephalography (EEG) in neurophysiological studies. The authors provide a summary of the clinical applications of TMS in neurological and psychiatric disorders including depression, schizophrenia, stroke, Parkinson disease, and pain. This up-to-date volume provides a compendious review of the use of TMS and rTMS that will help guide the utility of this methodology in both clinical and research settings. This practical guide will be a useful resource for those new to the field, as well as experienced users, for both research and clinical settings.