1. Bruce, C.J. and Goldberg, M.E. Primate frontal eye fields. I. Single neurons discharging before saccades. J. Neurophysiol. 53: 603–635, 1985.
2. DeLong, M.R. and Georgopoulos, A.P. Motor functions of the basal ganglia. In: Handbook of Physiology, The Nervous System, edited by V.B. Brooks. Bethesda, MD: Am. Physiol. Soc., 1981, sect. 1, part 2, vol. II, chapt. 21, pp. 1017–1061.
3. Graybiel, A.M. Organization of the nigrotectal connection: an experimental tracer study in the cat. Brain Res. 143: 339–348, 1978.
4. Hikosaka, O. and Sakamoto, M. Cell activity in monkey caudate nucleus preceding saccadic eye movements. Exp. Brain Res. 63: 659–662, 1986.
5. Hikosaka, O. and Sakamoto, M. Neural activities in the monkey basal ganglia related to attention, memory and anticipation. Brain Dev. 8: 454–462, 1986.