Table 1.

Training conditions and mean sessions required to meet training criteria for each group

Left	Right	Side sequence	Drug sequence	Sessions to criteria (±SEM)
0.1 pram	sal	L–R–L–R...	pram–sal–pram–sal...	110 (±16.6)
1.0 sum	sal	L–R–L–R...	sum–sal–sum–sal...	66 (±7.1)
0.1 pram	1.0 sum or sal	L–R–L–R...	pram–sum–pram–sal...	139 (±13.0)a
1.0 sum	0.1 pram or sal	L–R–L–R...	sum–pram–sum–sal...	129 (±15.6)

pram Pramipexole, sum sumanirole, L left, R right

^aOnly five of eight rats met training criteria. The other three rats experienced 310, 143, and 150 sessions, respectively, before being dropped from the experiment.