Distinct changes in cortical and spinal excitability following high-frequency repetitive TMS to the human motor cortex. - Quartarone,A.; Bagnato,S.; Rizzo,V.; Morgante,F.; Santaposangelo,A.; Battaglia,F.; Messina,C.; Siebner,H.R.; Girlanda,P. (Exp Brain Res, 2005)