Zobrazeno 1 - 10
of 38
pro vyhledávání: '"Vanessa M Brown"'
Autor:
Vanessa M Brown, Lusha Zhu, John M Wang, B Christopher Frueh, Brooks King-Casas, Pearl H Chiu
Publikováno v:
eLife, Vol 7 (2018)
Disproportionate reactions to unexpected stimuli in the environment are a cardinal symptom of posttraumatic stress disorder (PTSD). Here, we test whether these heightened responses are associated with disruptions in distinct components of reinforceme
Externí odkaz:
https://doaj.org/article/aa3899d4c1e543e68634c5f0bf980f8e
Autor:
Vanessa M. Brown, Claire M. Gillan, Marlee Renard, Rachel Kaskie, Michelle Degutis, Anna Wears, Greg J. Siegle, Fabio Ferrarelli, Susanne E. Ahmari, Rebecca B. Price
Publikováno v:
J Psychopathol Clin Sci
Patients with disorders of compulsivity show impairments in goal-directed behavior, which have been linked to orbitofrontal cortex (OFC) dysfunction. We recently showed that continuous theta burst stimulation (cTBS), which reduces OFC activity, had a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::243245aa6c5429381a7ae37f0076be86
https://pubmed.ncbi.nlm.nih.gov/35230864
https://pubmed.ncbi.nlm.nih.gov/35230864
Publikováno v:
Cognitive, Affective, & Behavioral Neuroscience.
In cognitive-behavioral conceptualizations of anxiety, exaggerated threat expectancies underlie maladaptive anxiety. This view has led to successful treatments, notably exposure therapy, but is not consistent with the empirical literature on learning
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1cef1b967f3941851dd0bc18a63c5564
https://doi.org/10.3758/s13415-023-01080-w
https://doi.org/10.3758/s13415-023-01080-w
Autor:
Kelly Rose Donegan, Vanessa M Brown, Rebecca Price, Andrew Pringle, Eoghan Gallagher, Anna Hanlon, Claire Gillan
Model-based planning is thought to protect against over-reliance on habits. It is reduced in individuals high in compulsivity, but effect sizes are small and may depend on subtle features of the tasks used to assess it. We developed a diamond-shootin
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5df1651e8a61db475c030d2c0af93a4e
https://doi.org/10.31234/osf.io/hpm4s
https://doi.org/10.31234/osf.io/hpm4s
Autor:
Emelina Vienneau, Rebecca B. Price, Colleen A. Hanlon, Vanessa M. Brown, Michelle Degutis, Helmet T. Karim, Angel V. Peterchev, Meredith L. Wallace, Tae Kim, Susanne E. Ahmari, Rachel E. Kaskie, Fabio Ferrarelli, Anna Wears, Marlee Renard, Greg J. Siegle, Claire M. Gillan
Publikováno v:
American Journal of Psychiatry. 178:459-468
Compulsive behaviors are a core feature of obsessive-compulsive spectrum disorders but appear across a broad spectrum of psychological conditions. It is thought that compulsions reflect a failure to override habitual behaviors "stamped in" through re
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9ca4778b0484e88e0cebc74c01193369
https://doi.org/10.1176/appi.ajp.2020.20060821
https://doi.org/10.1176/appi.ajp.2020.20060821
Publikováno v:
Biol Psychiatry Cogn Neurosci Neuroimaging
Background Computational models show great promise in mapping latent decision-making processes onto dissociable neural substrates and clinical phenotypes. One prominent example in reinforcement learning is model-based planning, which specifically rel
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3160859d536465c0fa10a0e96a85bc28
https://doi.org/10.1016/j.bpsc.2019.12.019
https://doi.org/10.1016/j.bpsc.2019.12.019
Autor:
Michael N. Hallquist, Vanessa M. Brown, Jonathan Wilson, Katalin Szanto, Alexandre Y. Dombrovski
Publikováno v:
Neuropsychopharmacology
Suicide is linked to impaired value-based decision-making and impulsivity, but whether these risk factors share neural underpinnings is unclear. Disrupted ventromedial prefrontal cortex (vmPFC) value signals may underlie this behavioral phenotype. We
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::62fea98e996180d01968b4928266e663
https://doi.org/10.1038/s41386-020-0632-0
https://doi.org/10.1038/s41386-020-0632-0
Publikováno v:
Cognition. 229
When navigating uncertain worlds, humans must balance exploring new options versus exploiting known rewards. Longer horizons and spatially structured option values encourage humans to explore, but the impact of real-world cognitive constraints such a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b14ea985ab2ac98313fa6b00f1b83a8f
https://pubmed.ncbi.nlm.nih.gov/35917612
https://pubmed.ncbi.nlm.nih.gov/35917612
Autor:
Vanessa M. Brown, John G. Keilp, Katalin Szanto, Jeffrey A. Bridge, Alexandre Y. Dombrovski, Aliona Tsypes
Publikováno v:
J Psychopathol Clin Sci
Prior studies sought to explain the predisposition to suicidal behavior in terms of myopic preference for immediate versus delayed reward, generating mixed evidence. Data from gambling and bandit tasks, however, suggest that suboptimal decisions in s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::437abb01480af91087d6ff3c50b4024d
https://europepmc.org/articles/PMC8893041/
https://europepmc.org/articles/PMC8893041/
Autor:
John M Wang, Lusha Zhu, Vanessa M. Brown, Pearl H. Chiu, Brooks King-Casas, Katherine McCurry, Alec Solway
Publikováno v:
JAMA Psychiatry
Key Points Question Are depression symptoms associated with features of reinforcement learning, and if so, is treatment-related symptom change associated with learning changes? Findings In this mixed cross-sectional–cohort study including 101 parti
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2f569da10feaa21b8612c7cce5379627
https://pubmed.ncbi.nlm.nih.gov/34319349
https://pubmed.ncbi.nlm.nih.gov/34319349