This study examines how the noradrenergic system affects learning processes in healthy individuals without any neurological or psychiatric conditions. The research uses atomoxetine, a medication that belongs to a class of drugs called selective noradrenaline reuptake inhibitors, which affect certain chemical messengers in the brain. The study compares the effects of a 40 mg dose of atomoxetine against a placebo to understand how this medication influences learning abilities.

The investigation focuses on measuring how participants perform during learning tasks under different conditions. Participants will complete two types of learning exercises – one with stable conditions and another with changing conditions. During these tasks, various measurements will be taken, including pupil diameter and brain activity through electroencephalography (a method that records electrical activity in the brain). The study involves taking either atomoxetine or a placebo and then completing these learning tasks.

The research will analyze several aspects of learning and brain function, including changes in brain activity patterns, eye movements, and heart function. Additional measurements include hormone levels in saliva and responses to questionnaires about mood and anxiety. This comprehensive approach aims to better understand how the medication affects learning processes in the brain.