**4. Discussion**

#### *4.1. fMRI Pilot Experiment*

The main goal of this pilot experiment was to determine the extent to which people engage multiple memory systems during a single categorization task. In line with past literature, the results showed that once subjects acquired the formations in the task, rule-based and perceptual similarity categoriation strategies engaged separate neural systems. These two systems were also recruited during a test block where the subjects were forced to generalize the categorizations strategies that they developed during training. For the machine-learning analysis, regions in the superior and inferior parietal lobes, along with MOFC, fusiform, and IFG successfully dissociated between conditions in the task. This provided enough prelimenary evidence to motivate the fully-powered dEEG experiment.
