Fig. 1: Recording sites and EDID task.
From: Reward recalibrates rule representations in human amygdala and hippocampus intracranial recordings
A Positions of amygdala and hippocampus contacts that were used for analysis. Different colors represent different patients. B Trial procedure of EDID shifting task. On each trial, patients had to find which one of four stimuli, which varied on two dimensions (letters and shapes), was correct by pressing one of two buttons corresponding to its location on the screen and then monitoring the feedback. Once they had selected the correct stimulus for three trials in a row, it would then change either within (ID) or between (ED) stimulus dimensions. For example, it might change from T to S (ID) or T to ellipse (ED). After six rule changes, a new stimulus set would appear. There were four stimulus sets in total. Two examples of the stimulus sets used are displayed in the top and bottom rows. Two choices were made on each trial so that the superimposition of the letters and shapes could be swapped to allow for calculation of which stimulus the patient believed to be the rule. The choice stimuli were presented for 2.1 s after which a response cue appeared signaling that they could respond. Correct and incorrect feedback was presented for .6 s. See methods for more details.
