AUTHOR=Kosheleff Alisa R. , Araki Jingwen , Tsan Linda , Chen Grace , Murphy Niall P. , Maidment Nigel T. , Ostlund Sean B. TITLE=Junk Food Exposure Disrupts Selection of Food-Seeking Actions in Rats JOURNAL=Frontiers in Psychiatry VOLUME=9 YEAR=2018 URL=https://www.frontiersin.org/journals/psychiatry/articles/10.3389/fpsyt.2018.00350 DOI=10.3389/fpsyt.2018.00350 ISSN=1664-0640 ABSTRACT=
There is growing evidence that repeated consumption of highly palatable, nutritionally poor “junk food” diets can produce deficits in cognition and behavioral control. We explored whether long-term junk-food diet exposure disrupts rats' ability to make adaptive choices about which foods to pursue based on (1) expected reward value (outcome devaluation test) and (2) cue-evoked reward expectations (Pavlovian-to-instrumental test). Rats were initially food restricted and trained on two distinct response-outcome contingencies (e.g., left press