Pain After Thalamic Stroke:Right Diencephalic Predominance and Clinical Features in 180 PatientsNeurol 48:1196-1199, Nasreddine,Z.S.&Saver,J.L., 1997
Perseveration in Behavioral NeurologyNeurol 37:1736-1741, Sandson,J.&Albert,M.L., 1987