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Precision weighting of cortical unsigned prediction error signals benefits learning, is mediated by dopamine, and is impaired in psychosis.
Haarsma J, Fletcher PC, Griffin JD, Taverne HJ, Ziauddeen H, Spencer TJ, Miller C, Katthagen T, Goodyer I, Diederen KMJ, Murray GK. Haarsma J, et al. Among authors: fletcher pc. Mol Psychiatry. 2021 Sep;26(9):5320-5333. doi: 10.1038/s41380-020-0803-8. Epub 2020 Jun 24. Mol Psychiatry. 2021. PMID: 32576965 Free PMC article.
Frontal responses during learning predict vulnerability to the psychotogenic effects of ketamine: linking cognition, brain activity, and psychosis.
Corlett PR, Honey GD, Aitken MR, Dickinson A, Shanks DR, Absalom AR, Lee M, Pomarol-Clotet E, Murray GK, McKenna PJ, Robbins TW, Bullmore ET, Fletcher PC. Corlett PR, et al. Among authors: fletcher pc. Arch Gen Psychiatry. 2006 Jun;63(6):611-21. doi: 10.1001/archpsyc.63.6.611. Arch Gen Psychiatry. 2006. PMID: 16754834 Clinical Trial.
Psychological effects of ketamine in healthy volunteers. Phenomenological study.
Pomarol-Clotet E, Honey GD, Murray GK, Corlett PR, Absalom AR, Lee M, McKenna PJ, Bullmore ET, Fletcher PC. Pomarol-Clotet E, et al. Among authors: fletcher pc. Br J Psychiatry. 2006 Aug;189:173-9. doi: 10.1192/bjp.bp.105.015263. Br J Psychiatry. 2006. PMID: 16880489 Free PMC article.
Substantia nigra/ventral tegmental reward prediction error disruption in psychosis.
Murray GK, Corlett PR, Clark L, Pessiglione M, Blackwell AD, Honey G, Jones PB, Bullmore ET, Robbins TW, Fletcher PC. Murray GK, et al. Among authors: fletcher pc. Mol Psychiatry. 2008 Mar;13(3):239, 267-76. doi: 10.1038/sj.mp.4002058. Epub 2007 Aug 7. Mol Psychiatry. 2008. PMID: 17684497 Free PMC article.
Reinforcement and reversal learning in first-episode psychosis.
Murray GK, Cheng F, Clark L, Barnett JH, Blackwell AD, Fletcher PC, Robbins TW, Bullmore ET, Jones PB. Murray GK, et al. Among authors: fletcher pc. Schizophr Bull. 2008 Sep;34(5):848-55. doi: 10.1093/schbul/sbn078. Epub 2008 Jul 15. Schizophr Bull. 2008. PMID: 18628272 Free PMC article.
Food images engage subliminal motivation to seek food.
Ziauddeen H, Subramaniam N, Gaillard R, Burke LK, Farooqi IS, Fletcher PC. Ziauddeen H, et al. Among authors: fletcher pc. Int J Obes (Lond). 2012 Sep;36(9):1245-7. doi: 10.1038/ijo.2011.239. Epub 2011 Dec 6. Int J Obes (Lond). 2012. PMID: 22143617 Free PMC article.
274 results