Evidence for Model-based Computations in the Human Amygdala during Pavlovian Conditioning
Charlotte Prevost, Daniel McNamee, Ryan K Jessup, Peter Bossaerts, John P O'Doherty
PLoS Computational Biology | PUBLIC LIBRARY SCIENCE | Published : 2013
Contemporary computational accounts of instrumental conditioning have emphasized a role for a model-based system in which values are computed with reference to a rich model of the structure of the world, and a model-free system in which values are updated without encoding such structure. Much less studied is the possibility of a similar distinction operating at the level of Pavlovian conditioning. In the present study, we scanned human participants while they participated in a Pavlovian conditioning task with a simple structure while measuring activity in the human amygdala using a high-resolution fMRI protocol. After fitting a model-based algorithm and a variety of model-free algorithms to ..View full abstract
Awarded by Science Foundation Ireland
Awarded by Div Of Biological Infrastructure
This work was funded by Science Foundation Ireland grant 08/IN.1/B1844 to JPOD. The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.