Table 1.

Quantitative densitometric analysis of ³H-SCH 23390 binding to D₁/D₅ receptors in the CA₁ region of the hippocampus

Group	n	3H-SCH binding, dpm/mm2
Naive	6	42  ±  8.1
Shocked	6	50  ±  9.3
Trained 0 h	6	52  ±  9.9
Trained 1 h	6	52  ±  7.5
Trained 3 h	6	98  ±  8.9†
Trained 6 h	6	74  ±  10.5*
Trained 9 h	6	51  ±  9.3

Data are expressed as mean ± SEM. 

^*P < 0.05;  

^†P < 0.01 in Newman–Keuls test after ANOVA.