Robbins, T. W. & Everitt, B. J. (1999). Interaction of the dopaminergic system with mechanisms of associative learning and cognition: Implications for drug abuse. Psychological Science, 10(3), 199-202.

Summary:
This study focuses on the role of the dopaminergic system in addiction to stimulant drugs.

Questions:

1. Which areas of the brain are involved in the dopaminergic system?
2. How do stimulant drugs enhance the effects aversive stimuli?
3. How do stimulant drugs enhance the effects of rewarding stimuli?

Whalen, P. J. (1998). Fear, vigilance, and ambiguity: Initial neuroimaging studies of the human amygdala. Current Directions in Psychological Science, 7(6), 177 188.

Summary:
This study focuses on the amygdala’s responses to ambiguous and unambiguous, masked and unmasked stimuli.

Questions:

1. Where is the amygdala located?
2. Why did the researchers present emotional stimuli to the participants?
3. In what way is the amygdala implied by animal research on the fear system.