Neurophysiological Effect of Ketamine on Prefrontal Cortex in Treatment-Resistant Depression: A Combined Transcranial Magnetic Stimulation–Electroencephalography Study. (July 2019) - Ramakrishnan, Nithya; Murphy, Nicholas R. E.; Walker, Christopher P.; Cuellar Leal, Valeria A.; Soares, Jair C.; Cho, Raymond Y. J.; Selvaraj, Sudhakar