V Calhoun

Summary

Affiliation: Johns Hopkins University
Country: USA

Publications

  1. ncbi request reprint A weighted least-squares algorithm for estimation and visualization of relative latencies in event-related functional MRI
    V Calhoun
    Division of Psychiatric Neuro Imaging, Johns Hopkins University, Baltimore, Maryland 21205, USA
    Magn Reson Med 44:947-54. 2000
  2. ncbi request reprint Spatial and temporal independent component analysis of functional MRI data containing a pair of task-related waveforms
    V D Calhoun
    Division of Psychiatric Neuro Imaging, Johns Hopkins University, Baltimore, Maryland, USA
    Hum Brain Mapp 13:43-53. 2001
  3. ncbi request reprint A method for making group inferences from functional MRI data using independent component analysis
    V D Calhoun
    Division of Psychiatric Neuro Imaging, Johns Hopkins University, Baltimore, Maryland, USA
    Hum Brain Mapp 14:140-51. 2001
  4. ncbi request reprint Different activation dynamics in multiple neural systems during simulated driving
    Vince D Calhoun
    Division of Psychiatric Neuro Imaging, Department of Psychiatry, Johns Hopkins University, Baltimore, Maryland 21205, USA
    Hum Brain Mapp 16:158-67. 2002
  5. pmc Modulation of temporally coherent brain networks estimated using ICA at rest and during cognitive tasks
    Vince D Calhoun
    Olin Neuropsychiatry Research Center, Institute of Living, Hartford, Connecticut 06106, USA
    Hum Brain Mapp 29:828-38. 2008
  6. ncbi request reprint An adaptive reflexive processing model of neurocognitive function: supporting evidence from a large scale (n = 100) fMRI study of an auditory oddball task
    Kent A Kiehl
    Olin Neuropsychiatry Research Center, The Institute of Living, Hartford, CT 06106, USA
    Neuroimage 25:899-915. 2005
  7. ncbi request reprint Alcohol intoxication effects on visual perception: an fMRI study
    Vince D Calhoun
    Olin Neuropsychiatry Research Center, Institute of Living, Hartford, Connecticut 06106, USA
    Hum Brain Mapp 21:15-26. 2004
  8. ncbi request reprint Estimating the number of independent components for functional magnetic resonance imaging data
    Yi Ou Li
    Department of Computer Science and Electrical Engineering, University of Maryland, Baltimore County, Baltimore, Maryland 21250, USA
    Hum Brain Mapp 28:1251-66. 2007
  9. ncbi request reprint Aberrant "default mode" functional connectivity in schizophrenia
    Abigail G Garrity
    Trinity College, Hartford, CT, USA
    Am J Psychiatry 164:450-7. 2007
  10. pmc Functional neural networks underlying response inhibition in adolescents and adults
    Michael C Stevens
    Olin Neuropsychiatry Research Center, Hartford, CT 06106, United
    Behav Brain Res 181:12-22. 2007

Collaborators

Detail Information

Publications30

  1. ncbi request reprint A weighted least-squares algorithm for estimation and visualization of relative latencies in event-related functional MRI
    V Calhoun
    Division of Psychiatric Neuro Imaging, Johns Hopkins University, Baltimore, Maryland 21205, USA
    Magn Reson Med 44:947-54. 2000
    ..The WLS method was developed to study the properties of hemodynamic latencies, which may be increasingly important as event-related fMRI continues to be advanced...
  2. ncbi request reprint Spatial and temporal independent component analysis of functional MRI data containing a pair of task-related waveforms
    V D Calhoun
    Division of Psychiatric Neuro Imaging, Johns Hopkins University, Baltimore, Maryland, USA
    Hum Brain Mapp 13:43-53. 2001
    ....
  3. ncbi request reprint A method for making group inferences from functional MRI data using independent component analysis
    V D Calhoun
    Division of Psychiatric Neuro Imaging, Johns Hopkins University, Baltimore, Maryland, USA
    Hum Brain Mapp 14:140-51. 2001
    ....
  4. ncbi request reprint Different activation dynamics in multiple neural systems during simulated driving
    Vince D Calhoun
    Division of Psychiatric Neuro Imaging, Department of Psychiatry, Johns Hopkins University, Baltimore, Maryland 21205, USA
    Hum Brain Mapp 16:158-67. 2002
    ..Increases in cerebellar and occipital areas, presumably related to complex visuomotor integration, are activated during driving but not associated with driving speed...
  5. pmc Modulation of temporally coherent brain networks estimated using ICA at rest and during cognitive tasks
    Vince D Calhoun
    Olin Neuropsychiatry Research Center, Institute of Living, Hartford, Connecticut 06106, USA
    Hum Brain Mapp 29:828-38. 2008
    ..In summary, TCNs show considerable promise as potential imaging biological markers of brain diseases, though each network needs to be studied in more detail...
  6. ncbi request reprint An adaptive reflexive processing model of neurocognitive function: supporting evidence from a large scale (n = 100) fMRI study of an auditory oddball task
    Kent A Kiehl
    Olin Neuropsychiatry Research Center, The Institute of Living, Hartford, CT 06106, USA
    Neuroimage 25:899-915. 2005
    ..This process may be termed 'adaptive reflexive processing.' The implications of these results for interpreting functional MRI studies are discussed...
  7. ncbi request reprint Alcohol intoxication effects on visual perception: an fMRI study
    Vince D Calhoun
    Olin Neuropsychiatry Research Center, Institute of Living, Hartford, Connecticut 06106, USA
    Hum Brain Mapp 21:15-26. 2004
    ..e., increased in spatial extent) at the higher dose. Alcohol, thus, appears to have both global and local effects upon the neural correlates of the MVPT-R task, some of which are dose dependent...
  8. ncbi request reprint Estimating the number of independent components for functional magnetic resonance imaging data
    Yi Ou Li
    Department of Computer Science and Electrical Engineering, University of Maryland, Baltimore County, Baltimore, Maryland 21250, USA
    Hum Brain Mapp 28:1251-66. 2007
    ....
  9. ncbi request reprint Aberrant "default mode" functional connectivity in schizophrenia
    Abigail G Garrity
    Trinity College, Hartford, CT, USA
    Am J Psychiatry 164:450-7. 2007
    ..It was hypothesized that the default mode network would show abnormal activation and connectivity in patients with schizophrenia...
  10. pmc Functional neural networks underlying response inhibition in adolescents and adults
    Michael C Stevens
    Olin Neuropsychiatry Research Center, Hartford, CT 06106, United
    Behav Brain Res 181:12-22. 2007
    ..We identify and characterize several age-related differences in the function of neural circuits that are associated with behavioral performance changes across adolescent development...
  11. pmc Performance of blind source separation algorithms for fMRI analysis using a group ICA method
    Nicolle Correa
    Department of Computer Science and Electrical Engineering, University of Maryland, Baltimore County, Baltimore, MD 21250, USA
    Magn Reson Imaging 25:684-94. 2007
    ..Our results greatly improve our confidence in the consistency of ICA for fMRI data analysis...
  12. pmc Unmixing concurrent EEG-fMRI with parallel independent component analysis
    Tom Eichele
    Department of Biological and Medical Psychology, University of Bergen, Jonas Lies vei 91, 5011 Bergen, Norway
    Int J Psychophysiol 67:222-34. 2008
    ..We illustrate the utility of this method by extracting a previously undetected but relevant EEG-fMRI component from a concurrent auditory target detection experiment...
  13. pmc Joint independent component analysis for simultaneous EEG-fMRI: principle and simulation
    Matthias Moosmann
    Department of Biological and Medical Psychology, University of Bergen, Jonas Lies vei 91, 5011 Bergen, Norway
    Int J Psychophysiol 67:212-21. 2008
    ..Our results indicate that this approach is a feasible and physiologically plausible data-driven way to achieve spatiotemporal mapping of event related responses in the human brain...
  14. pmc Selective changes of resting-state networks in individuals at risk for Alzheimer's disease
    Christian Sorg
    Department of Psychiatry, Klinikum rechts der Isar, Technische Universitat Munchen, Ismaningerstrasse 22, 81675 Munich, Germany
    Proc Natl Acad Sci U S A 104:18760-5. 2007
    ..We interpret our finding as a proof of principle, demonstrating that functional brain disorders can be characterized by functional-disconnectivity profiles of RSNs...
  15. pmc A method for functional network connectivity among spatially independent resting-state components in schizophrenia
    Madiha J Jafri
    Olin Neuropsychiatry Research Center, Institute of Living, Hartford, CT 06106, USA
    Neuroimage 39:1666-81. 2008
    ..Significant differences between patient and control connectivity in different networks were revealed possibly reflecting deficiencies in cortical processing in patients...
  16. pmc A large scale (N=400) investigation of gray matter differences in schizophrenia using optimized voxel-based morphometry
    Shashwath A Meda
    Olin Neuropsychiatry Research Center, Institute of Living at Hartford Hospital, Hartford, CT 06106, USA
    Schizophr Res 101:95-105. 2008
    ..However, results from these studies vary widely, likely due to different methodological or statistical approaches...
  17. pmc Prediction of human errors by maladaptive changes in event-related brain networks
    Tom Eichele
    Department of Biological and Medical Psychology, University of Bergen, 5009 Bergen, Norway
    Proc Natl Acad Sci U S A 105:6173-8. 2008
    ..Our findings provide insights into the brain network dynamics preceding human performance errors and suggest that monitoring of the identified precursor states may help in avoiding human errors in critical real-world situations...
  18. ncbi request reprint Alterations in memory networks in mild cognitive impairment and Alzheimer's disease: an independent component analysis
    Kim A Celone
    Memory Disorders Unit, Department of Neurology, Brigham and Women s Hospital, Harvard Medical School, Boston, Massachusetts 02115, USA
    J Neurosci 26:10222-31. 2006
    ..These data may also provide functional evidence of the interaction between neocortical and medial temporal lobe pathology in early AD...
  19. ncbi request reprint Functional neural circuits for mental timekeeping
    Michael C Stevens
    Olin Neuropsychiatry Research Center, Hartford, Connecticut 06106, USA
    Hum Brain Mapp 28:394-408. 2007
    ..These findings are discussed within the context of current biological and information processing models of neural timekeeping...
  20. pmc Aberrant localization of synchronous hemodynamic activity in auditory cortex reliably characterizes schizophrenia
    Vince D Calhoun
    Institute of Living, Olin Neuropsychiatry Research Center, 200 Retreat Avenue, Hartford, CT 06106, USA
    Biol Psychiatry 55:842-9. 2004
    ..In this study, we attempted to examine auditory cortex function using an intrinsic, task-uncorrelated measure...
  21. ncbi request reprint Functional MRI study of a serial reaction time task in Huntington's disease
    Jin Suh Kim
    Olin Neuropsychiatry Research Center, Institute of Living, Hartford Hospital, 400 Washington St, Hartford, CT 06106, USA
    Psychiatry Res 131:23-30. 2004
    ..The variable striatal activity in the Huntington's group suggests early functional loss possibly associated with previously demonstrated early atrophy of these same neural structures...
  22. ncbi request reprint Alcohol intoxication effects on simulated driving: exploring alcohol-dose effects on brain activation using functional MRI
    Vince D Calhoun
    Olin Neuropsychiatry Research Center, Institute of Living, Hartford, CT, USA
    Neuropsychopharmacology 29:2097-17. 2004
    ..The fMRI data also suggest that the deficits observed in alcohol intoxication may be modulated primarily through OF/anterior cingulate, motor and cerebellar regions as opposed to attentional areas in frontoparietal cortex...
  23. ncbi request reprint Lack of sex effect on brain activity during a visuomotor response task: functional MR imaging study
    Nina Mikhelashvili-Browner
    Johns Hopkins Hospital, The Russell H Morgan Department of Radiology and Radiological Sciences, Division of Neuroradiology, Baltimore, MD 21205, USA
    AJNR Am J Neuroradiol 24:488-94. 2003
    ..As more individuals are enrolled in clinical functional MR imaging (fMRI) studies, an understanding of how sex may influence fMRI-measured brain activation is critical...
  24. ncbi request reprint Source density-driven independent component analysis approach for fMRI data
    Baoming Hong
    Olin Neuropsychiatry Research Center, Institute of Living, Hartford, Connecticut 06106, USA
    Hum Brain Mapp 25:297-307. 2005
    ..Our experimental results show that the source density-driven ICA method can improve performance further by incorporating some a priori information into ICA analysis of fMRI signals...
  25. ncbi request reprint Effect of age on visuomotor functional MR imaging
    Aylin Tekes
    Johns Hopkins Hospital, The Russell H Morgan Department of Radiology and Radiological Sciences, Division of Neuroradiology, 600 N Wolfe Street Phipps B 112, Baltimore, MD 21287, USA
    Acad Radiol 12:739-45. 2005
    ..We sought to determine the effect of age on functional MR imaging experiments performed with visual and motor stimulation. We hypothesized that there would be a diminution in the amplitude of fMRI activation with increasing subjects' age...
  26. ncbi request reprint Abnormal object recall and anterior cingulate overactivation correlate with formal thought disorder in schizophrenia
    Michal Assaf
    Olin Neuropsychiatry Research Center, Institute of Living, Hartford, CT 06106, USA
    Biol Psychiatry 59:452-9. 2006
    ..An influential theory is that FTD results from impaired semantic memory processing. We explored the neural correlates of semantic memory retrieval in schizophrenia using an imaging task assessing semantic object recall...
  27. pmc A method for multitask fMRI data fusion applied to schizophrenia
    Vince D Calhoun
    Olin Neuropsychiatry Research Center, Institute of Living, Hartford, Connecticut 06106, USA
    Hum Brain Mapp 27:598-610. 2006
    ..It thus provides a way to integrate and probe brain networks using a variety of tasks and may increase our understanding of coordinated brain networks and the impact of pathology upon them...
  28. ncbi request reprint Correlation of reaction time in and out of the functional MR unit
    Nina Mikhelashvili-Browner
    Acad Radiol 9:513-9. 2002
    ..The authors performed this study to determine whether reaction times (RTs) recorded in the functional magnetic resonance (MR) imaging environment reflect the performance of the patient outside the imaging room...
  29. ncbi request reprint Unmixing fMRI with independent component analysis
    Vince D Calhoun
    Medical Image Analysis Lab, Olin Neuropsychiatry Research Center, Hartford, CT 06106, USA
    IEEE Eng Med Biol Mag 25:79-90. 2006
  30. ncbi request reprint Simulated driving and brain imaging: combining behavior, brain activity, and virtual reality
    Kara N Carvalho
    Trinity University, Hartford, CT 06106, USA
    CNS Spectr 11:52-62. 2006
    ..Various clinical questions can be addressed, including both the role of alcohol as a modulator of brain function and regional brain activation related to elements of driving...