L. 2009. Encoding of speed and direction of movement in the human supplementary motor area. Neurosurg. 110.1304-1316. Taylor. D.M.. Helms Tillery. St Schwartz. AIL 2002. Direct cortical control of 3D neuroprosthetic devices. Science 296.1829-1832. Truccolo. W. Erwhs, G.ht Donoghue. J.P.. Hochberg. tit. 20