Ayana A. Gibbs
King's College London
15 Papers
97 Citations
Ayana A. Gibbs is an academic researcher from King's College London. The author has contributed to research in topics: Cognition & Schizophrenia. The author has an hindex of 8, co-authored 15 publications. Previous affiliations of Ayana A. Gibbs include University of Cambridge & Brighton and Sussex Medical School.
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Papers
Delusion formation and insight in the context of affective disturbance.
Ayana A. Gibbs,Anthony S. David +1 more
TL;DR: It is proposed that delusional beliefs may represent false or biased memories of internal or external events modified and strengthened of by affective states, and that insight rests on an ability to identify these memories as internally generated or biased.
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Influence of COMT val158met and ADRA2B deletion polymorphisms on recollection and familiarity components of human emotional memory
Kris Naudts,Ruben T. Azevedo,Anthony S. David,C. van Heeringen,Ayana A. Gibbs,Ayana A. Gibbs +5 more
TL;DR: There was a significant interaction between COMT genotype and emotional arousal in relation to recollection, but not familiarity, with the former being significantly elevated for emotionally arousing versus neutral pictures in carriers of the val158 allele compared with met158 carriers.
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Deletion variant of α2b-adrenergic receptor gene moderates the effect of COMT val158met polymorphism on episodic memory performance
TL;DR: Carriage of the ADRA2B deletion abolished the relative memory impairment in homozygous COMT val(158) carriers compared to met(158), and an interaction between this COMT polymorphism and a deletion variant of AD RA2B, the gene encoding the alpha2b-adrenergic receptor on episodic memory performance is demonstrated.
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Alpha 2B adrenoceptor genotype moderates effect of reboxetine on negative emotional memory bias in healthy volunteers
Ayana A. Gibbs,Ayana A. Gibbs,Carla E. Bautista,Florence D. Mowlem,Kris Naudts,Theodora Duka +5 more
TL;DR: Reboxetine attenuated enhanced memory for negative stimuli in deletion noncarriers but had no significant effect in deletion carriers, the first demonstration of genetic variation influencing antidepressant drug effects on emotional processing in healthy humans.
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Effects of amisulpride on emotional memory using a dual-process model in healthy male volunteers.
TL;DR: It was found that amisulpride levels at encoding were significantly inversely correlated with recollection estimates for emotional but not neutral stimuli or familiarity estimates in healthy male volunteers, which suggests that dopamine antagonism at encoding preferentially impairs the recollection component of emotional memory, relative to the familiarity component.
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