Ahmed A Moustafa

Summary

Affiliation: University of Western Sydney
Country: Australia

Publications

  1. doi request reprint Drift diffusion model of reward and punishment learning in schizophrenia: Modeling and experimental data
    Ahmed A Moustafa
    School of Social Sciences and Psychology, Marcs Institute for Brain and Behaviour, University of Western Sydney, Penrith, NSW, Australia Electronic address
    Behav Brain Res 291:147-54. 2015
  2. doi request reprint Factors underlying probabilistic and deterministic stimulus-response learning performance in medicated and unmedicated patients with Parkinson's disease
    Ahmed A Moustafa
    New Jersey Health Care System, East Orange, New Jersey, USA
    Neuropsychology 27:498-510. 2013
  3. doi request reprint The effects of clinical motor variables and medication dosage on working memory in Parkinson's disease
    Ahmed A Moustafa
    Department of Veterans Affairs, New Jersey Health Care System, East Orange, NJ, United States
    Brain Cogn 82:137-45. 2013
  4. doi request reprint Dissociating the cognitive effects of levodopa versus dopamine agonists in a neurocomputational model of learning in Parkinson's disease
    Ahmed A Moustafa
    Marcs Institute for Brain and Behaviour and Foundational Processes of Behaviour, School of Social Sciences and Psychology, University of Western Sydney, Sydney, N S W, Australia
    Neurodegener Dis 11:102-11. 2013
  5. pmc A model of amygdala-hippocampal-prefrontal interaction in fear conditioning and extinction in animals
    Ahmed A Moustafa
    School of Social Sciences and Psychology, Marcs Institute for Brain and Behaviour, University of Western Sydney, Sydney, NSW, Australia
    Brain Cogn 81:29-43. 2013
  6. pmc Why trace and delay conditioning are sometimes (but not always) hippocampal dependent: a computational model
    Ahmed A Moustafa
    Department of Veterans Affairs, New Jersey Health Care System, East Orange, NJ, USA
    Brain Res 1493:48-67. 2013
  7. pmc The relationship between associative learning, transfer generalization, and homocysteine levels in mild cognitive impairment
    Ahmed A Moustafa
    School of Social Sciences and Psychology and Marcs Institute for Brain and Behaviour, University of Western Sydney, Sydney, New South Wales, Australia
    PLoS ONE 7:e46496. 2012
  8. pmc Learning to obtain reward, but not avoid punishment, is affected by presence of PTSD symptoms in male veterans: empirical data and computational model
    Catherine E Myers
    Department of Veterans Affairs, VA New Jersey Health Care System, East Orange, New Jersey, United States of America Stress and Motivated Behavior Institute, Department of Neurology and Neurosciences, New Jersey Medical School, Rutgers, The State University of New Jersey, Newark, New Jersey, United States of America Department of Psychology, Rutgers, The State University of New Jersey, Newark, New Jersey, United States of America Graduate School of Biomedical Sciences, Rutgers, The State University of New Jersey, Newark, New Jersey, United States of America
    PLoS ONE 8:e72508. 2013
  9. doi request reprint Probabilistic reward- and punishment-based learning in opioid addiction: Experimental and computational data
    Catherine E Myers
    Department of Veterans Affairs, New Jersey Health Care System, East Orange, NJ, USA Department of Pharmacology, Physiology and Neuroscience, New Jersey Medical School, Rutgers, The State University of New Jersey, Newark, NJ, USA Electronic address
    Behav Brain Res 296:240-8. 2016
  10. pmc Testing the role of reward and punishment sensitivity in avoidance behavior: a computational modeling approach
    Jony Sheynin
    Department of Veterans Affairs, New Jersey Health Care System, East Orange, NJ, USA Joint Biomedical Engineering Program, New Jersey Institute of Technology and Graduate School of Biomedical Sciences, Rutgers, The State University of New Jersey, Newark, NJ, USA Stress and Motivated Behavior Institute, New Jersey Medical School, Rutgers, The State University of New Jersey, Newark, NJ, USA Electronic address
    Behav Brain Res 283:121-38. 2015

Collaborators

Detail Information

Publications19

  1. doi request reprint Drift diffusion model of reward and punishment learning in schizophrenia: Modeling and experimental data
    Ahmed A Moustafa
    School of Social Sciences and Psychology, Marcs Institute for Brain and Behaviour, University of Western Sydney, Penrith, NSW, Australia Electronic address
    Behav Brain Res 291:147-54. 2015
    ..Our data highlights the importance of applying fitting models (particularly drift diffusion models) to behavioral data. The implications of these findings are discussed relative to theories of schizophrenia and cognitive processing. ..
  2. doi request reprint Factors underlying probabilistic and deterministic stimulus-response learning performance in medicated and unmedicated patients with Parkinson's disease
    Ahmed A Moustafa
    New Jersey Health Care System, East Orange, New Jersey, USA
    Neuropsychology 27:498-510. 2013
    ....
  3. doi request reprint The effects of clinical motor variables and medication dosage on working memory in Parkinson's disease
    Ahmed A Moustafa
    Department of Veterans Affairs, New Jersey Health Care System, East Orange, NJ, United States
    Brain Cogn 82:137-45. 2013
    ..Our results have implications for the interrelationship between motor and cognitive processes in PD, and for understanding the role of cognitive training in treating motor symptoms in PD...
  4. doi request reprint Dissociating the cognitive effects of levodopa versus dopamine agonists in a neurocomputational model of learning in Parkinson's disease
    Ahmed A Moustafa
    Marcs Institute for Brain and Behaviour and Foundational Processes of Behaviour, School of Social Sciences and Psychology, University of Western Sydney, Sydney, N S W, Australia
    Neurodegener Dis 11:102-11. 2013
    ..Levodopa and dopamine agonists have different effects on the motor, cognitive, and psychiatric aspects of Parkinson's disease (PD)...
  5. pmc A model of amygdala-hippocampal-prefrontal interaction in fear conditioning and extinction in animals
    Ahmed A Moustafa
    School of Social Sciences and Psychology, Marcs Institute for Brain and Behaviour, University of Western Sydney, Sydney, NSW, Australia
    Brain Cogn 81:29-43. 2013
    ..g., a different conditioning chamber from that used in initial training in animal experiments). We also discuss model limitations and predictions, including the effects of number of training trials on fear conditioning...
  6. pmc Why trace and delay conditioning are sometimes (but not always) hippocampal dependent: a computational model
    Ahmed A Moustafa
    Department of Veterans Affairs, New Jersey Health Care System, East Orange, NJ, USA
    Brain Res 1493:48-67. 2013
    ..Finally, we discuss model limitations, future directions, and several novel empirical predictions of this temporal processing model of hippocampal function and learning...
  7. pmc The relationship between associative learning, transfer generalization, and homocysteine levels in mild cognitive impairment
    Ahmed A Moustafa
    School of Social Sciences and Psychology and Marcs Institute for Brain and Behaviour, University of Western Sydney, Sydney, New South Wales, Australia
    PLoS ONE 7:e46496. 2012
    ..Importantly, our study is perhaps among the first to test the relationship between learning (and generalization) of rules and homocysteine levels in healthy controls and individuals with MCI...
  8. pmc Learning to obtain reward, but not avoid punishment, is affected by presence of PTSD symptoms in male veterans: empirical data and computational model
    Catherine E Myers
    Department of Veterans Affairs, VA New Jersey Health Care System, East Orange, New Jersey, United States of America Stress and Motivated Behavior Institute, Department of Neurology and Neurosciences, New Jersey Medical School, Rutgers, The State University of New Jersey, Newark, New Jersey, United States of America Department of Psychology, Rutgers, The State University of New Jersey, Newark, New Jersey, United States of America Graduate School of Biomedical Sciences, Rutgers, The State University of New Jersey, Newark, New Jersey, United States of America
    PLoS ONE 8:e72508. 2013
    ....
  9. doi request reprint Probabilistic reward- and punishment-based learning in opioid addiction: Experimental and computational data
    Catherine E Myers
    Department of Veterans Affairs, New Jersey Health Care System, East Orange, NJ, USA Department of Pharmacology, Physiology and Neuroscience, New Jersey Medical School, Rutgers, The State University of New Jersey, Newark, NJ, USA Electronic address
    Behav Brain Res 296:240-8. 2016
    ..Further work is indicated to better understand whether this tendency arises as a result of brain changes in the wake of continued opioid use/abuse, or might be a pre-existing factor that may contribute to risk for addiction. ..
  10. pmc Testing the role of reward and punishment sensitivity in avoidance behavior: a computational modeling approach
    Jony Sheynin
    Department of Veterans Affairs, New Jersey Health Care System, East Orange, NJ, USA Joint Biomedical Engineering Program, New Jersey Institute of Technology and Graduate School of Biomedical Sciences, Rutgers, The State University of New Jersey, Newark, NJ, USA Stress and Motivated Behavior Institute, New Jersey Medical School, Rutgers, The State University of New Jersey, Newark, NJ, USA Electronic address
    Behav Brain Res 283:121-38. 2015
    ..Overall, this study is the first to suggest cognitive mechanisms underlying the greater avoidance behavior observed in healthy individuals with different anxiety vulnerabilities...
  11. doi request reprint Cognitive correlates of psychosis in patients with Parkinson's disease
    Ahmed A Moustafa
    a Department of Veterans Affairs, New Jersey Health Care System, East Orange, NJ, USA
    Cogn Neuropsychiatry 19:381-98. 2014
    ..Psychosis and hallucinations occur in 20-30% of patients with Parkinson's disease (PD). In the current study, we investigate cognitive functions in relation to the occurrence of psychosis in PD patients...
  12. doi request reprint Freezing of gait in Parkinson's disease is associated with functional decoupling between the cognitive control network and the basal ganglia
    James M Shine
    1 Parkinson s Disease Research Clinic, Brain and Mind Research Institute, The University of Sydney, NSW, Australia
    Brain 136:3671-81. 2013
    ..These results support the hypothesis that freezing behaviour in Parkinson's disease is because of impaired communication between complimentary yet competing neural networks. ..
  13. pmc Learning and generalization in healthy aging: implication for frontostriatal and hippocampal function
    Rakhee Krishna
    Department of Psychiatry, New Jersey Medical School, University of Medicine and Dentistry of New Jersey, Piscataway, NJ, USA
    Cogn Behav Neurol 25:7-15. 2012
    ..We hypothesize that generalization deficits in some in the oldest group may be related to hippocampal pathology. Our data shed light on possible neural system dysfunction in healthy aging and Alzheimer disease...
  14. pmc Enhanced avoidance learning in behaviorally inhibited young men and women
    Jony Sheynin
    Joint Biomedical Engineering Program, New Jersey Institute of Technology and Graduate School of Biomedical Sciences, University of Medicine and Dentistry of New Jersey, Newark, NJ 17018, USA
    Stress 16:289-99. 2013
    ....
  15. doi request reprint The Role of Informative and Ambiguous Feedback in Avoidance Behavior: Empirical and Computational Findings
    Ahmed A Moustafa
    Department of Veterans Affairs, New Jersey Health Care System, East Orange, NJ, United States of America
    PLoS ONE 10:e0144083. 2015
    ..Together, results shed light on the important role of ambiguous and informative feedback in avoidance behavior. ..
  16. pmc A neural model of hippocampal-striatal interactions in associative learning and transfer generalization in various neurological and psychiatric patients
    Ahmed A Moustafa
    Center for Molecular and Behavioral Neuroscience, Rutgers University, Newark, NJ 07102, USA
    Brain Cogn 74:132-44. 2010
    ..We argue from this that changes in associative learning of stimulus-action pathways (in the basal ganglia) or changes in the learning of stimulus representations (in the hippocampal region) can have similar functional effects...