Amir Shmuel

Summary

Affiliation: University of Minnesota
Country: USA

Publications

  1. ncbi request reprint Sustained negative BOLD, blood flow and oxygen consumption response and its coupling to the positive response in the human brain
    Amir Shmuel
    Center for Magnetic Resonance Research, University of Minnesota Medical School, Minneapolis, MN 55455, USA
    Neuron 36:1195-210. 2002
  2. ncbi request reprint Zoomed functional imaging in the human brain at 7 Tesla with simultaneous high spatial and high temporal resolution
    Josef Pfeuffer
    Center for Magnetic Resonance Research, University of Minnesota Medical School, 2021 6th Street S E, Minneapolis, Minnesota 55455, USA
    Neuroimage 17:272-86. 2002
  3. pmc Robust detection of ocular dominance columns in humans using Hahn Spin Echo BOLD functional MRI at 7 Tesla
    Essa Yacoub
    Center for Magnetic Resonance Research, Department of Radiology, University of Minnesota Medical School, 2021 6th Street S E, Minneapolis, MN 55455, USA
    Neuroimage 37:1161-77. 2007
  4. ncbi request reprint Signal and noise characteristics of Hahn SE and GE BOLD fMRI at 7 T in humans
    Essa Yacoub
    Center for Magnetic Resonance Research, Department of Radiology, University of Minnesota Medical School, Minneapolis, MN 55455, USA
    Neuroimage 24:738-50. 2005
  5. ncbi request reprint Perfusion-based high-resolution functional imaging in the human brain at 7 Tesla
    Josef Pfeuffer
    Center for Magnetic Resonance Research, Department of Radiology, University of Minnesota Medical School, Minneapolis, USA
    Magn Reson Med 47:903-11. 2002
  6. pmc Spatio-temporal point-spread function of fMRI signal in human gray matter at 7 Tesla
    Amir Shmuel
    Center for MR Research, University of Minnesota Medical School, 2021 6th St SE, Minneapolis, MN, USA
    Neuroimage 35:539-52. 2007
  7. ncbi request reprint Robust controlled functional MRI in alert monkeys at high magnetic field: effects of jaw and body movements
    Georgios A Keliris
    Max Planck Institute for Biological Cybernetics, Spemannstr 38, 72076 Tuebingen, Germany
    Neuroimage 36:550-70. 2007
  8. ncbi request reprint Functional MR imaging in the awake monkey: effects of motion on dynamic off-resonance and processing strategies
    Josef Pfeuffer
    Max Planck Institute for Biological Cybernetics, Department Physiology of Cognitive Processes, 72076 Tubingen, Germany
    Magn Reson Imaging 25:869-82. 2007
  9. ncbi request reprint Negative functional MRI response correlates with decreases in neuronal activity in monkey visual area V1
    Amir Shmuel
    Max Planck Institute for Biological Cybernetics, Spemannstr 38, 72076 Tuebingen, Germany
    Nat Neurosci 9:569-77. 2006
  10. doi request reprint Neuronal correlates of spontaneous fluctuations in fMRI signals in monkey visual cortex: Implications for functional connectivity at rest
    Amir Shmuel
    Montreal Neurological Institute, Departments of Neurology and Neurosurgery and Biomedical Engineering, McGill University, Montreal, QC, Canada
    Hum Brain Mapp 29:751-61. 2008

Detail Information

Publications12

  1. ncbi request reprint Sustained negative BOLD, blood flow and oxygen consumption response and its coupling to the positive response in the human brain
    Amir Shmuel
    Center for Magnetic Resonance Research, University of Minnesota Medical School, Minneapolis, MN 55455, USA
    Neuron 36:1195-210. 2002
    ..Our findings support the contribution to the NBR of (1) a significant component of reduction in neuronal activity and (2) possibly a component of hemodynamic changes independent of the local changes in neuronal activity...
  2. ncbi request reprint Zoomed functional imaging in the human brain at 7 Tesla with simultaneous high spatial and high temporal resolution
    Josef Pfeuffer
    Center for Magnetic Resonance Research, University of Minnesota Medical School, 2021 6th Street S E, Minneapolis, Minnesota 55455, USA
    Neuroimage 17:272-86. 2002
    ..The magnetization transfer effect induced by the outer-volume suppression pulses was investigated and found to be increased during neuronal activity...
  3. pmc Robust detection of ocular dominance columns in humans using Hahn Spin Echo BOLD functional MRI at 7 Tesla
    Essa Yacoub
    Center for Magnetic Resonance Research, Department of Radiology, University of Minnesota Medical School, 2021 6th Street S E, Minneapolis, MN 55455, USA
    Neuroimage 37:1161-77. 2007
    ....
  4. ncbi request reprint Signal and noise characteristics of Hahn SE and GE BOLD fMRI at 7 T in humans
    Essa Yacoub
    Center for Magnetic Resonance Research, Department of Radiology, University of Minnesota Medical School, Minneapolis, MN 55455, USA
    Neuroimage 24:738-50. 2005
    ..It was concluded that HSE imaging yields a significantly reduced amount of nonspecific signals compared to GE imaging, and, would be the method of choice (over GE) for high-resolution applications in humans...
  5. ncbi request reprint Perfusion-based high-resolution functional imaging in the human brain at 7 Tesla
    Josef Pfeuffer
    Center for Magnetic Resonance Research, Department of Radiology, University of Minnesota Medical School, Minneapolis, USA
    Magn Reson Med 47:903-11. 2002
    ..High-resolution functional CBF imaging is significant for neuroscience research because it provides better localization and more specific information than BOLD for monitoring brain function...
  6. pmc Spatio-temporal point-spread function of fMRI signal in human gray matter at 7 Tesla
    Amir Shmuel
    Center for MR Research, University of Minnesota Medical School, 2021 6th St SE, Minneapolis, MN, USA
    Neuroimage 35:539-52. 2007
    ..The choice of optimal stimulus duration represents a trade-off between the spatial specificity and the overhead associated with short stimulus duration...
  7. ncbi request reprint Robust controlled functional MRI in alert monkeys at high magnetic field: effects of jaw and body movements
    Georgios A Keliris
    Max Planck Institute for Biological Cybernetics, Spemannstr 38, 72076 Tuebingen, Germany
    Neuroimage 36:550-70. 2007
    ..It is anticipated that the techniques presented here will prove useful for alert monkey fMRI at any magnetic field...
  8. ncbi request reprint Functional MR imaging in the awake monkey: effects of motion on dynamic off-resonance and processing strategies
    Josef Pfeuffer
    Max Planck Institute for Biological Cybernetics, Department Physiology of Cognitive Processes, 72076 Tubingen, Germany
    Magn Reson Imaging 25:869-82. 2007
    ..Highly activated voxels also displayed good reproducibility between trials. On average, the BOLD amplitude response to a short 3-s visual stimulus was close to 2%...
  9. ncbi request reprint Negative functional MRI response correlates with decreases in neuronal activity in monkey visual area V1
    Amir Shmuel
    Max Planck Institute for Biological Cybernetics, Spemannstr 38, 72076 Tuebingen, Germany
    Nat Neurosci 9:569-77. 2006
    ..The NBR was associated with comparable decreases in local field potentials and multiunit activity. Our findings indicate that a significant component of the NBR originates in neuronal activity decreases...
  10. doi request reprint Neuronal correlates of spontaneous fluctuations in fMRI signals in monkey visual cortex: Implications for functional connectivity at rest
    Amir Shmuel
    Montreal Neurological Institute, Departments of Neurology and Neurosurgery and Biomedical Engineering, McGill University, Montreal, QC, Canada
    Hum Brain Mapp 29:751-61. 2008
    ....
  11. ncbi request reprint Retinotopic axis specificity and selective clustering of feedback projections from V2 to V1 in the owl monkey
    Amir Shmuel
    Department of Neurobiology, The Weizmann Institute of Science, 76100 Rehovot, Israel
    J Neurosci 25:2117-31. 2005
    ..We conclude that the feedback connections from V2 to V1 might play a role in enhancing the response in V1 to collinear contour elements...
  12. ncbi request reprint The spatial pattern of response magnitude and selectivity for orientation and direction in cat visual cortex
    Nicholas V Swindale
    Department of Ophthalmology and Visual Sciences, University of British Columbia, 2550 Willow Street, Vancouver, BC, Canada V5Z 3N9
    Cereb Cortex 13:225-38. 2003
    ..Orientation and direction preference angles are always closely orthogonal. Reversals in direction preference form lines that originate precisely in orientation singularities...