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Here, we show that infection with<jats:italic>T. gondii<\/jats:italic>increases the propensity of the infected rats to make more impulsive choices, manifested as delay aversion in an intertemporal choice task. Concomitantly,<jats:italic>T. gondii<\/jats:italic>infection causes reduction in dopamine content and neuronal spine density of the nucleus accumbens core, but not of the nucleus accumbens shell. These results are consistent with a role of the nucleus accumbens dopaminergic system in mediation of choice impulsivity and goal-directed behaviours. Our observations suggest that<jats:italic>T. gondii<\/jats:italic>infection in rats causes a syndromic shift in related behavioural constructs of innate aversion and making foraging decisions.<\/jats:p>","DOI":"10.1098\/rspb.2015.0042","type":"journal-article","created":{"date-parts":[[2015,5,20]],"date-time":"2015-05-20T09:03:04Z","timestamp":1432112584000},"page":"20150042","update-policy":"https:\/\/doi.org\/10.1098\/crossmark-policy","source":"Crossref","is-referenced-by-count":18,"title":["Infection of male rats with<i>Toxoplasma gondii<\/i>results in enhanced delay aversion and neural changes in the nucleus accumbens core"],"prefix":"10.1098","volume":"282","author":[{"given":"Donna","family":"Tan","sequence":"first","affiliation":[{"name":"School of Biological Sciences, Nanyang Technological University, 60 Nanyang Drive, 637551 Singapore"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Linda Jing 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