J D Ragland

Summary

Affiliation: University of California
Country: USA

Publications

  1. doi request reprint FMRI as a measure of cognition related brain circuitry in schizophrenia
    Laura A Libby
    Departments of Psychology and Psychiatry, University of California at Davis, Davis, CA, USA
    Curr Top Behav Neurosci 11:253-67. 2012
  2. ncbi request reprint Neuroimaging of cognitive disability in schizophrenia: search for a pathophysiological mechanism
    J D Ragland
    Department of Psychiatry and Behavioral Sciences, Imaging Research Center, University of California at Davis, 47 1 X Street, Sacramento, CA 95817, USA
    Int Rev Psychiatry 19:417-27. 2007
  3. pmc Effect of retrieval effort and switching demand on fMRI activation during semantic word generation in schizophrenia
    J D Ragland
    University of California at Davis, Department of Psychiatry and Behavioral Sciences, 4701 X Street, Sacramento, CA 95817, USA
    Schizophr Res 99:312-23. 2008
  4. pmc CNTRICS final task selection: long-term memory
    John D Ragland
    Department of Psychiatry and Behavioral Sciences, University of California at Davis, Sacramento, CA 95817, USA
    Schizophr Bull 35:197-212. 2009
  5. pmc Prefrontal activation deficits during episodic memory in schizophrenia
    John D Ragland
    University of California Davis Imaging Research Center, 4701 X St, Sacramento, CA 95817, USA
    Am J Psychiatry 166:863-74. 2009
  6. pmc CNTRICS imaging biomarkers final task selection: Long-term memory and reinforcement learning
    John D Ragland
    Department of Psychiatry and Behavioral Sciences, University of California at Davis Imaging Research Center, Sacramento, CA 95817, USA
    Schizophr Bull 38:62-72. 2012
  7. pmc Relational and Item-Specific Encoding (RISE): task development and psychometric characteristics
    John D Ragland
    Department of Psychiatry, Imaging Research Center, University of California at Davis, 4701 X Street, Sacramento, CA 95817, USA
    Schizophr Bull 38:114-24. 2012
  8. pmc Neural correlates of relational and item-specific encoding during working and long-term memory in schizophrenia
    John D Ragland
    Department of Psychiatry, Imaging Research Center, University of California Davis, 4701 X Street, Sacramento, CA 95817, USA
    Neuroimage 59:1719-26. 2012
  9. ncbi request reprint Frontotemporal cerebral blood flow change during executive and declarative memory tasks in schizophrenia: a positron emission tomography study
    J D Ragland
    Department of Psychiatry, University of Pennsylvania Health Systems, Philadelphia, USA
    Neuropsychology 12:399-413. 1998
  10. ncbi request reprint Computerized neurocognitive scanning: II. The profile of schizophrenia
    R C Gur
    Schizophrenia Research Center, Neuropsychiatry Section, Department of Psychiatry, The University of Pennsylvania, 3400 Spruce St, Philadelphia, PA 19104, USA
    Neuropsychopharmacology 25:777-88. 2001

Detail Information

Publications20

  1. doi request reprint FMRI as a measure of cognition related brain circuitry in schizophrenia
    Laura A Libby
    Departments of Psychology and Psychiatry, University of California at Davis, Davis, CA, USA
    Curr Top Behav Neurosci 11:253-67. 2012
    ..The chapter closes with an understanding of how current default-mode and task-positive network theories grew out of these earlier resting-state and task-activation approaches, and provides some recommendations about future directions...
  2. ncbi request reprint Neuroimaging of cognitive disability in schizophrenia: search for a pathophysiological mechanism
    J D Ragland
    Department of Psychiatry and Behavioral Sciences, Imaging Research Center, University of California at Davis, 47 1 X Street, Sacramento, CA 95817, USA
    Int Rev Psychiatry 19:417-27. 2007
    ..The article concludes with a discussion of how fMRI can help facilitate development of novel psychosocial and pharmacological interventions designed to improve cognition and functional outcome in patients with schizophrenia...
  3. pmc Effect of retrieval effort and switching demand on fMRI activation during semantic word generation in schizophrenia
    J D Ragland
    University of California at Davis, Department of Psychiatry and Behavioral Sciences, 4701 X Street, Sacramento, CA 95817, USA
    Schizophr Res 99:312-23. 2008
    ..This inefficient BOLD response may explain why patients are slower and less accurate on standard self-paced fluency tasks...
  4. pmc CNTRICS final task selection: long-term memory
    John D Ragland
    Department of Psychiatry and Behavioral Sciences, University of California at Davis, Sacramento, CA 95817, USA
    Schizophr Bull 35:197-212. 2009
    ..This discussion is followed by each nominating authors' description of their selected task paradigm, ending with some thoughts about future directions...
  5. pmc Prefrontal activation deficits during episodic memory in schizophrenia
    John D Ragland
    University of California Davis Imaging Research Center, 4701 X St, Sacramento, CA 95817, USA
    Am J Psychiatry 166:863-74. 2009
    ..This quantitative meta-analysis of functional imaging studies of episodic encoding and retrieval tests the prediction that these deficits are most consistently associated with dysfunction in the prefrontal cortex...
  6. pmc CNTRICS imaging biomarkers final task selection: Long-term memory and reinforcement learning
    John D Ragland
    Department of Psychiatry and Behavioral Sciences, University of California at Davis Imaging Research Center, Sacramento, CA 95817, USA
    Schizophr Bull 38:62-72. 2012
    ....
  7. pmc Relational and Item-Specific Encoding (RISE): task development and psychometric characteristics
    John D Ragland
    Department of Psychiatry, Imaging Research Center, University of California at Davis, 4701 X Street, Sacramento, CA 95817, USA
    Schizophr Bull 38:114-24. 2012
    ..This manuscript describes how a cognitive neuroscience functional imaging paradigm was translated for clinical research...
  8. pmc Neural correlates of relational and item-specific encoding during working and long-term memory in schizophrenia
    John D Ragland
    Department of Psychiatry, Imaging Research Center, University of California Davis, 4701 X Street, Sacramento, CA 95817, USA
    Neuroimage 59:1719-26. 2012
    ....
  9. ncbi request reprint Frontotemporal cerebral blood flow change during executive and declarative memory tasks in schizophrenia: a positron emission tomography study
    J D Ragland
    Department of Psychiatry, University of Pennsylvania Health Systems, Philadelphia, USA
    Neuropsychology 12:399-413. 1998
    ..Results suggest that schizophrenia may involve a breakdown in the integration of a frontotemporal network that is responsive to executive and declarative memory demands in healthy individuals...
  10. ncbi request reprint Computerized neurocognitive scanning: II. The profile of schizophrenia
    R C Gur
    Schizophrenia Research Center, Neuropsychiatry Section, Department of Psychiatry, The University of Pennsylvania, 3400 Spruce St, Philadelphia, PA 19104, USA
    Neuropsychopharmacology 25:777-88. 2001
    ..We conclude that the computerized neurocognitive scan can be applied reliably in people with schizophrenia, yielding data that support its construct and criterion validity...
  11. ncbi request reprint Controlled and automatic processing during animal word list generation in schizophrenia
    S T Moelter
    Department of Psychiatry, University of Pennsylvania Health System, USA
    Neuropsychology 15:502-9. 2001
    ..This pattern is consistent with prominent frontotemporal pathology evident in the disorder...
  12. ncbi request reprint Sex differences in brain-behavior relationships between verbal episodic memory and resting regional cerebral blood flow
    J D Ragland
    Department of Psychiatry, University of Pennsylvania Health Systems, 10th Floor, Gates Building, 3400 Spruce Street, Philadelphia 19104 4283, USA
    Neuropsychologia 38:451-61. 2000
    ..These results suggest that trait differences in temporal pole brain-behavior relationships may relate to sex differences in verbal episodic memory...
  13. ncbi request reprint Effect of schizophrenia on frontotemporal activity during word encoding and recognition: a PET cerebral blood flow study
    J D Ragland
    Department of Psychiatry, University of Pennsylvania, Philadelphia 19104 4283, USA
    Am J Psychiatry 158:1114-25. 2001
    ..The current study used positron emission tomography to examine the effect of schizophrenia on change in cerebral blood flow (CBF) during these memory stages...
  14. ncbi request reprint Neuropsychological differences among empirically derived clinical subtypes of schizophrenia
    S K Hill
    Brain Behavior Laboratory, Department of Psychiatry, University of Pennsylvania School of Medicine, Philadelphia 19104, USA
    Neuropsychology 15:492-501. 2001
    ..These findings reflect bilateral frontal-temporal dysfunction, particularly in disorganized and negative patients. Subtype differences highlight the importance of conceptualizing schizophrenia as a multifocal disorder...
  15. ncbi request reprint Lateralized changes in regional cerebral blood flow during performance of verbal and facial recognition tasks: correlations with performance and "effort"
    R C Gur
    Department of Psychiatry, University of Pennsylvania, Philadelphia 19104, USA
    Brain Cogn 33:388-414. 1997
    ..Exploratory analyses on other regions showed lateralized changes in one additional temporal region, the occipital-temporal, and several limbic regions...
  16. ncbi request reprint PET regional cerebral blood flow change during working and declarative memory: relationship with task performance
    J D Ragland
    Department of Psychiatry, University of Pennsylvania Health Systems, Philadelphia, USA
    Neuropsychology 11:222-31. 1997
    ..These results suggest operation of a frontotemporal network subserving both types of memory function that becomes more focal as performance increases...
  17. ncbi request reprint Comparison of the continuous performance test with and without working memory demands in healthy controls and patients with schizophrenia
    M M Kurtz
    Brain Behavior Laboratory, Department of Psychiatry, 10th Floor Gates Building, University of Pennsylvania School of Medicine, 3400 Spruce Street, Philadelphia, PA 19104, USA
    Schizophr Res 48:307-16. 2001
    ..These results support previous conclusions that sustained visual attention in schizophrenia is a core information processing deficit, not directly related to symptomatology...
  18. ncbi request reprint Computerized neurocognitive scanning: I. Methodology and validation in healthy people
    R C Gur
    Brain Behavior Laboratory, Neuropsychiatry Section, Department of Psychiatry, University of Pennsylvania, 3400 Spruce St, Philadelphia, PA 19104, USA
    Neuropsychopharmacology 25:766-76. 2001
    ..Therefore, the computerized scan has favorable reliability and construct validity and can be applied efficiently to study healthy variability related to age and gender...
  19. ncbi request reprint Brain activity during simulated deception: an event-related functional magnetic resonance study
    D D Langleben
    Department of Psychiatry, Treatment Research Center, University of Pennsylvania, Philadelphia, PA 19104, USA
    Neuroimage 15:727-32. 2002
    ....
  20. doi request reprint Cognition in schizophrenia and schizo-affective disorder: impairments that are more similar than different
    A Owoso
    Department of Psychiatry, Washington University School of Medicine, St Louis, MO, USA
    Psychol Med 43:2535-45. 2013
    ....