J Gen Psychol, Vol. 134, No. 2. (April 2007), pp. 199-216.
Curr Biol, Vol. 17, No. 19. (9 October 2007), pp. 1663-1668.
J Exp Anal Behav, Vol. 76, No. 2. (September 2001), pp. 235-243.
Exp Clin Psychopharmacol, Vol. 14, No. 3. (August 2006), pp. 318-328.
J. Neurosci., Vol. 27, No. 21. (23 May 2007), pp. 5796-5804.
Learning and Motivation, Vol. 23, No. 3. (August 1992), pp. 326-342.
Psychological Science, Vol. 18, No. 1. (January 2007), pp. 58-63.
Curr Biol, Vol. 17, No. 1. (9 January 2007), pp. 49-53.
J Exp Anal Behav, Vol. 63, No. 3. (May 1995), pp. 313-329.
Nature Neuroscience, Vol. 9, No. 9. (20 August 2006), pp. 1161-1168.
J. Neurosci., Vol. 27, No. 1. (3 January 2007), pp. 245-250.
J Neurosci, Vol. 26, No. 51. (20 December 2006), pp. 13213-13217.
PLoS Comput Biol, Vol. 2, No. 11. (10 November 2006)
Med Hypotheses, Vol. 67, No. 6. (2006), pp. 1372-1374.
Neural Networks, Vol. 19, No. 8. (October 2006), pp. 1277-1301.
Neuron, Vol. 51, No. 4. (17 August 2006), pp. 509-520.
J Exp Anal Behav, Vol. 85, No. 3. (May 2006), pp. 425-435.
Addiction, Vol. 96, No. 1. (January 2001), pp. 73-86.
J Neurophysiol, Vol. 94, No. 4. (October 2005), pp. 2457-2471.
Behav Processes, Vol. 72, No. 3. (1 June 2006), pp. 273-282.
Science, Vol. 312, No. 5774. (5 May 2006), pp. 754-758.
J Neurophysiol (18 January 2006)
Biology Letters, Vol. 1, No. 2. (June 2005), pp. 223-226.
Science, Vol. 306, No. 5695. (15 October 2004), pp. 503-507.
J Neurosci, Vol. 18, No. 7. (1 April 1998), pp. 2613-2625.
European Journal of Neuroscience, Vol. 22, No. 6. (September 2005), pp. 1502-1512.
Biol Psychiatry (24 August 2005)
Curr Biol, Vol. 15, No. 20. (25 October 2005), pp. 1855-1860.
J Exp Psychol Learn Mem Cogn, Vol. 31, No. 5. (September 2005), pp. 1121-1133.
Science, Vol. 306, No. 5703. (10 December 2004), pp. 1944-1947.
J Neurophysiol, Vol. 94, No. 2. (August 2005), pp. 1469-1497.
Medical Hypotheses, Vol. In Press, Corrected Proof
Proc Biol Sci, Vol. 271, No. 1556. (7 December 2004), pp. 2459-2465.
Neurocomputing, Vol. 32-33 (June 2000), pp. 679-684.
Curr Biol, Vol. 15, No. 7. (12 April 2005), pp. 594-602.
BMC Neurosci, Vol. 6, No. 1. (3 February 2005)
Nat Neurosci, Vol. 7, No. 8. (August 2004), pp. 887-893.
J Neurosci, Vol. 24, No. 20. (19 May 2004), pp. 4718-4722.
Psychopharmacology (Berl), Vol. 160, No. 3. (March 2002), pp. 290-298.
Psychol Bull, Vol. 82, No. 4. (July 1975), pp. 463-496.
Psychopharmacology (Berl), Vol. 175, No. 2. (September 2004), pp. 206-214.
Psychopharmacology (Berl), Vol. 146, No. 4. (October 1999), pp. 362-372.
Behav Processes, Vol. 67, No. 3. (30 November 2004), pp. 343-356.
Neural Netw, Vol. 15, No. 4-6. (l 2002), pp. 617-634.
J Exp Anal Behav, Vol. 67, No. 3. (May 1997), pp. 353-366.
Ann N Y Acad Sci, Vol. 1021 (June 2004), pp. 33-50.
Science, Vol. 292, No. 5526. (29 June 2001), pp. 2499-2501.
Journal of the Experimental Analysis of Behavior, Vol. 21 (1974), pp. 485-489.
Psychonomic Bulletin and Review, Vol. 10, No. 4. (1 December 2003), pp. 965-970.
J Comp Psychol, Vol. 108, No. 2. (June 1994), pp. 126-133.