Spontaneously Fluctuating Motor Cortex Excitability in Alternating Hemiplegia of Childhood: A Transcranial Magnetic Stimulation Study. oleh William M Stern, Mahalekshmi Desikan, Damon Hoad, Fatima Jaffer, Gionata Strigaro, Josemir W Sander, John C Rothwell, Sanjay M Sisodiya