Figure 1. Experimental Design.

a. Depiction of the encoding task (left panel) and cued recall task (right panel). During encoding stem-unique nouns are presented with occasional emotional nouns (E) and perceptually distinct nouns (P). During the cued recall task three letter stems of the nouns encoded on the first day are presented. The stems of the perceptual nouns are not presented in a distinct font. b. Schematic of the study design over 3 days. Note that propranolol is only administered on Day 2. BP = blood pressure measurement.