Todd, G., Taylor, J.L., Baumann, D., Butler, J.E., Duma, S.R., Hayes, M., Carew-Jones, F., Piguet, O., Behnke, S., Ridding, M.C., Berg, D. and Double, K.L. (2010) Substantia nigra echomorphology and motor cortex excitability. NeuroImage, 50, 1351-1356.
