Table 2.

Basal concentrations of dopamine within the limbic and nigrostriatal systems 17 days following repeated amphetamine (2.5 mg/kg, ip.) or saline pre-treatment.

DA Concentrations (pg/µg tissue)
Region	Treatment	Mean±SEM	F	p
Central Nucleus of the Amygdala	Sensitized	10.7±4.7	3.667	0.055
	Non-Sensitized	29.8±2.8
	Control	24.3±5.9
Medial Prefrontal Cortex	Sensitized	1.3±0.1	2.198	0.133
	Non-Sensitized	1.2±0.1
	Control	1.6±0.1
Dorsal Raphe Nucleus	Sensitized	7.0±0.7	2.156	0.138
	Non-Sensitized	10.6±0.8
	Control	9.4±1.0
Median Raphe Nucleus	Sensitized	3.3±0.5	2.982	0.071
	Non-Sensitized	5.0±0.3
	Control	4.6±0.4
Nucleus Accumbens Core	Sensitized	142.3±7.5	0.363	0.700
	Non-Sensitized	150.9±4.5
	Control	146.9±5.8
Substantia Nigra	Sensitized	8.4±2.1	0.524	0.599
	Non-Sensitized	5.0±1.1
	Control	8.2±2.0