UCLA Department of Psychology

This document contains supporting material for "Design of a neurally plausible

model of fear learning" by FB Krasne, MS Fanselow, and M Zelikowsky. The model is

referred to as FRAT (for Fraidy Rat). The first main section of this paper provides a full

mathematical description of the model. The second section presents a number of

simulations that were not included in the main paper.