Table 1.

Baseline firing rate of VTA neurons. Baseline firing rate of VTA neurons in adult and adolescent rats.

Session	Adults (Hz)	Adolescents (Hz)	z	p
1	4.726	3.163	−2.730	0.005
2	5.998	2.879	−4.029	0.000
3	5.198	3.667	−3.008	0.002
4	4.951	3.245	−2.851	0.004
5	5.502	3.581	−2.985	0.002
6	4.943	4.723	−0.809	0.418
7	4.262	3.801	−0.962	0.336
8	3.750	3.941	0.030	0.975