Nader Pouratian

Summary

Affiliation: University of California
Country: USA

Publications

  1. doi request reprint Factors predicting language lateralization in patients with perisylvian vascular malformations. Clinical article
    Darrin J Lee
    Department of Neurosurgery, David Geffen School of Medicine, University of California, Los Angeles, California 90095 7039, USA
    J Neurosurg 113:723-30. 2010
  2. pmc The brain and computer: The neurosurgical interface
    Nader Pouratian
    Department of Neurosurgery, David Geffen School of Medicine at UCLA, Los Angeles, CA 90095, USA
    Surg Neurol Int 2:79. 2011
  3. doi request reprint The reliability of neuroanatomy as a predictor of eloquence: a review
    Nader Pouratian
    Department of Neurosurgery, David Geffen School of Medicine at UCLA, Los Angeles, California 90095 7049, USA
    Neurosurg Focus 28:E3. 2010
  4. doi request reprint Multi-institutional evaluation of deep brain stimulation targeting using probabilistic connectivity-based thalamic segmentation
    Nader Pouratian
    Department of Neurosurgery, David Geffen School of Medicine at UCLA, Los Angeles, California 90095, USA
    J Neurosurg 115:995-1004. 2011
  5. doi request reprint Comprehensive analysis of risk factors for seizures after deep brain stimulation surgery. Clinical article
    Nader Pouratian
    Department of Neurosurgery, David Geffen School of Medicine at UCLA, Los Angeles, California, USA
    J Neurosurg 115:310-5. 2011
  6. pmc Management of low-grade glioma
    Nader Pouratian
    Department of Neurosurgery, David Geffen School of Medicine at UCLA, 10945 Le Conte Avenue, Suite 2120, Los Angeles, CA 90095, USA
    Curr Neurol Neurosci Rep 10:224-31. 2010
  7. ncbi request reprint Functional signal- and paradigm-dependent linear relationships between synaptic activity and hemodynamic responses in rat somatosensory cortex
    Masahito Nemoto
    Laboratory of Neuroimaging, Department of Neurology, University of California, Los Angeles, School of Medicine, Los Angeles, California 90024, USA
    J Neurosci 24:3850-61. 2004
  8. ncbi request reprint Columnar specificity of microvascular oxygenation and volume responses: implications for functional brain mapping
    Sameer A Sheth
    Laboratory of Neuro Imaging, Department of Neurology, David Geffen School of Medicine at University of California at Los Angeles, Los Angeles, California 90024, USA
    J Neurosci 24:634-41. 2004
  9. ncbi request reprint Cortical spreading depression produces long-term disruption of activity-related changes in cerebral blood volume and neurovascular coupling
    Michael Guiou
    University of California, Los Angeles, School of Medicine, Department of Neurology, Laboratory of Neuro Imaging, Los Angeles, California 90024 1769, USA
    J Biomed Opt 10:11004. 2005
  10. ncbi request reprint Utility of preoperative functional magnetic resonance imaging for identifying language cortices in patients with vascular malformations
    Nader Pouratian
    Department of Neurology, Laboratory of Neuro Imaging, UCLA School of Medicine, University of California, Los Angeles, California, USA
    Neurosurg Focus 13:e4. 2002

Collaborators

Detail Information

Publications32

  1. doi request reprint Factors predicting language lateralization in patients with perisylvian vascular malformations. Clinical article
    Darrin J Lee
    Department of Neurosurgery, David Geffen School of Medicine, University of California, Los Angeles, California 90095 7039, USA
    J Neurosurg 113:723-30. 2010
    ..The authors conducted a study to determine the factors associated with right-sided language dominance in patients with cerebrovascular malformations...
  2. pmc The brain and computer: The neurosurgical interface
    Nader Pouratian
    Department of Neurosurgery, David Geffen School of Medicine at UCLA, Los Angeles, CA 90095, USA
    Surg Neurol Int 2:79. 2011
    ....
  3. doi request reprint The reliability of neuroanatomy as a predictor of eloquence: a review
    Nader Pouratian
    Department of Neurosurgery, David Geffen School of Medicine at UCLA, Los Angeles, California 90095 7049, USA
    Neurosurg Focus 28:E3. 2010
    ..Perhaps most importantly, an individualized approach to mapping patients with brain tumors ensures that the risk of iatrogenic functional injury is minimized while maximizing the extent of resection...
  4. doi request reprint Multi-institutional evaluation of deep brain stimulation targeting using probabilistic connectivity-based thalamic segmentation
    Nader Pouratian
    Department of Neurosurgery, David Geffen School of Medicine at UCLA, Los Angeles, California 90095, USA
    J Neurosurg 115:995-1004. 2011
    ..The object of this study was to preliminarily investigate the role of probabilistic tractography-based thalamic segmentation for deep brain stimulation (DBS) targeting for the treatment of tremor...
  5. doi request reprint Comprehensive analysis of risk factors for seizures after deep brain stimulation surgery. Clinical article
    Nader Pouratian
    Department of Neurosurgery, David Geffen School of Medicine at UCLA, Los Angeles, California, USA
    J Neurosurg 115:310-5. 2011
    ..The aim of this study was to assess risk factors for postoperative seizures after deep brain stimulation (DBS) lead implantation surgery and the impact of such seizures on length of stay and discharge disposition...
  6. pmc Management of low-grade glioma
    Nader Pouratian
    Department of Neurosurgery, David Geffen School of Medicine at UCLA, 10945 Le Conte Avenue, Suite 2120, Los Angeles, CA 90095, USA
    Curr Neurol Neurosci Rep 10:224-31. 2010
    ..In this review, we critically analyze emerging trends in the literature with respect to management of LGG, with particular emphasis on reports published during the past year...
  7. ncbi request reprint Functional signal- and paradigm-dependent linear relationships between synaptic activity and hemodynamic responses in rat somatosensory cortex
    Masahito Nemoto
    Laboratory of Neuroimaging, Department of Neurology, University of California, Los Angeles, School of Medicine, Los Angeles, California 90024, USA
    J Neurosci 24:3850-61. 2004
    ..Functional signal- and paradigm-dependent linearity have potentially profound implications for the interpretation of perfusion-based functional signals...
  8. ncbi request reprint Columnar specificity of microvascular oxygenation and volume responses: implications for functional brain mapping
    Sameer A Sheth
    Laboratory of Neuro Imaging, Department of Neurology, David Geffen School of Medicine at University of California at Los Angeles, Los Angeles, California 90024, USA
    J Neurosci 24:634-41. 2004
    ..We, therefore, suggest that to optimize hemodynamic spatial specificity, appropriate response timing (using < or =2-3 sec changes) is more important than etiology (oxygenation or volume)...
  9. ncbi request reprint Cortical spreading depression produces long-term disruption of activity-related changes in cerebral blood volume and neurovascular coupling
    Michael Guiou
    University of California, Los Angeles, School of Medicine, Department of Neurology, Laboratory of Neuro Imaging, Los Angeles, California 90024 1769, USA
    J Biomed Opt 10:11004. 2005
    ..Electrophysiological activity is also attenuated but to a lesser degree. CBV and evoked potentials are not well correlated following CSD, suggesting a breakdown of the neurovascular coupling relationship...
  10. ncbi request reprint Utility of preoperative functional magnetic resonance imaging for identifying language cortices in patients with vascular malformations
    Nader Pouratian
    Department of Neurology, Laboratory of Neuro Imaging, UCLA School of Medicine, University of California, Los Angeles, California, USA
    Neurosurg Focus 13:e4. 2002
    ....
  11. pmc Improved P300 speller performance using electrocorticography, spectral features, and natural language processing
    William Speier
    Department of Bioengineering, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA
    Clin Neurophysiol 124:1321-8. 2013
    ..This study was designed to explore the potential improvement from using electrocorticography (ECoG) compared to the more traditional usage of electroencephalography (EEG)...
  12. pmc Diffusion tensor imaging (DTI) and colored fractional anisotropy (FA) mapping of the subthalamic nucleus (STN) and the globus pallidus interna (GPi)
    Mark Sedrak
    Department of Neurosurgery, University of California Los Angeles, 90095, USA
    Acta Neurochir (Wien) 152:2079-84. 2010
    ..We studied directionally colored fractional anisotropy (FA) and diffusion tensor imaging (DTI) sequences to better target these anatomical regions...
  13. ncbi request reprint Linear and nonlinear relationships between neuronal activity, oxygen metabolism, and hemodynamic responses
    Sameer A Sheth
    Laboratory of Neuro Imaging, Department of Neurology, David Geffen School of Medicine at the University of California, Los Angeles, Los Angeles, CA 90024, USA
    Neuron 42:347-55. 2004
    ....
  14. pmc Use of language mapping to aid in resection of gliomas in eloquent brain regions
    Matthew C Garrett
    UCLA Department of Neurosurgery, David Geffen School of Medicine at UCLA, Los Angeles, CA 90096 6901, USA
    Neurosurg Clin N Am 23:497-506. 2012
    ..Finally, the authors evaluate the postoperative course of these patients and the effect of language deficits on their quality of life...
  15. ncbi request reprint Intraoperative optical intrinsic signal imaging: a clinical tool for functional brain mapping
    Nader Pouratian
    Laboratory of Neuro Imaging, Division of Brain Mapping, Department of Neurology, University of California, Los Angeles, California, USA
    Neurosurg Focus 13:e1. 2002
    ..Additional studies will be required to quantify the sensitivity and specificity of optical maps relative to ECSM before it can be implemented clinically...
  16. ncbi request reprint Evaluation of coupling between optical intrinsic signals and neuronal activity in rat somatosensory cortex
    Sameer Sheth
    Laboratory of Neuroimaging, Department of Neurology, University of California, Los Angeles, School of Medicine, Los Angeles, CA 90024, USA
    Neuroimage 19:884-94. 2003
    ..The robust CBV-related response, however, has a high SNR and correlates well with evoked cortical activity...
  17. doi request reprint Validation of connectivity-based thalamic segmentation with direct electrophysiologic recordings from human sensory thalamus
    W Jeffrey Elias
    Department of Neurosurgery, University of Virginia Health Sciences Center, Box 800212, Charlottesville, Virginia 22903, USA
    Neuroimage 59:2025-34. 2012
    ..Finally, these direct recordings from human thalamus confirm early inferences of a sensory thalamic component of the N18 waveform in somatosensory evoked potentials...
  18. ncbi request reprint Shedding light on brain mapping: advances in human optical imaging
    Nader Pouratian
    Laboratory of Neuro Imaging, Department of Neurology, David Geffen School of Medicine at UCLA, 710 Westwood Plaza Room 4238, Los Angeles, CA 90095 1769, USA
    Trends Neurosci 26:277-82. 2003
    ..Continued improvement and implementation of this technique promises to shed new light on the functional organization of human cortex...
  19. pmc 200-300Hz movement modulated oscillations in the internal globus pallidus of patients with Parkinson's Disease
    Christos Tsiokos
    Department of Neurosurgery, University of California, Los Angeles, Los Angeles, CA 90095, USA
    Neurobiol Dis 54:464-74. 2013
    ....
  20. doi request reprint Electrophysiologically guided untethering of secondary tethered spinal cord syndrome
    Nader Pouratian
    Department of Neurosurgery, University of Virginia Health System, Charlottesville, Virginia, USA
    Neurosurg Focus 29:E3. 2010
    ..In addition, the authors describe the use of electrophysiological guidance to identify an "autonomous placode" in the untethering of the cord in STCS...
  21. pmc DTI correlates of distinct cognitive impairments in Parkinson's disease
    Zhong Zheng
    Department of Neurosurgery, David Geffen School of Medicine at UCLA, Los Angeles, California
    Hum Brain Mapp 35:1325-33. 2014
    ..DTI combined with neurocognitive tests may be a valuable biomarker for identifying cognitive impairments in PD...
  22. ncbi request reprint Common cerebral networks associated with distinct deep brain stimulation targets for cluster headache
    Claire D Clelland
    Department of Neurosurgery, University of California, Los Angeles, CA, USA
    Cephalalgia 34:224-30. 2014
    ..While the connectivity of some of these targets has individually been studied, commonalities across these targets, especially with respect to network-level connectivity, have not previously been explored...
  23. ncbi request reprint Multiwavelength optical intrinsic signal imaging of cortical spreading depression
    Alyssa M Ba
    Laboratory of Neuroimaging, Department of Neurology, University of California, School of Medicine, Los Angeles, California 90024, USA
    J Neurophysiol 88:2726-35. 2002
    ..Previous studies have suggested the oligemia of spreading depression was a result of decreased metabolic demand. This study suggests that during the oligemic period there is a greater reduction in oxygen delivery than in demand...
  24. doi request reprint An evidence-based approach to the efficient use of computed tomography imaging in the neurosurgical patient
    Matthew C Garrett
    UCLA Department of Neurosurgery, UCLA Informatics, UCLA Department of Internal Medicine, UCLA Department of Bioengineering, Los Angeles, California
    Neurosurgery 73:209-15; discussion 215-6. 2013
    ..Computed tomography (CT) is the current standard for rapidly diagnosing some of the more common structural pathologies that affect the neurosurgical patient perioperatively. With this convenience comes the potential for its overuse...
  25. ncbi request reprint Deep brain stimulation for Tourette syndrome
    Won Kim
    Department of Neurosurgery, University of California, Los Angeles 10945, Le Conte Avenue, Suite 2120, Los Angeles, CA 90095, USA Electronic address
    Neurosurg Clin N Am 25:117-35. 2014
    ..Future multicenter clinical trials and the use of a centralized online database to compare the results are necessary to determine the efficacy of DBS for Tourette syndrome. ..
  26. pmc Evaluating true BCI communication rate through mutual information and language models
    William Speier
    Department of Bioengineering, University of California Los Angeles, Los Angeles, California, United States of America Medical Imaging Informatics Group, University of California Los Angeles, Los Angeles, California, United States of America
    PLoS ONE 8:e78432. 2013
    ..Standardizing metrics to accurately reflect the rate of information transmission is critical to properly evaluate and compare BCI communication systems and advance the field in an unbiased manner. ..
  27. pmc Natural language processing with dynamic classification improves P300 speller accuracy and bit rate
    William Speier
    Biomedical Engineering Interdepartmental Program, University of California, Los Angeles, CA, USA
    J Neural Eng 9:016004. 2012
    ..This study suggests that integrating information about the linguistic domain can significantly improve signal classification...
  28. pmc Brain imaging correlates of peripheral nerve stimulation
    Ausaf A Bari
    Department of Neurosurgery, David Geffen School of Medicine at UCLA, Los Angeles, California
    Surg Neurol Int 3:S260-8. 2012
    ..From this information we may be able to understand which brain structures are involved in the mechanism of peripheral nerve stimulation as well as define the neural substrates underlying these disorders...
  29. doi request reprint Standards for reporting randomized controlled trials in neurosurgery
    Erin N Kiehna
    Department of Neurosurgery, University of Virginia Health System, Charlottesville, Virginia, USA
    J Neurosurg 114:280-5. 2011
    ..The purpose of this study is to evaluate the quality and reporting of randomized controlled trials (RCTs) in neurosurgery and the factors that may affect the quality of reported trials...
  30. ncbi request reprint Part II: spinal-cord neoplasms--primary tumours of the bony spine and adjacent soft tissues
    Charles A Sansur
    Department of Neurosurgery, University of Virginia Health System, Charlottesville, VA 22908, USA
    Lancet Oncol 8:137-47. 2007
    ....
  31. ncbi request reprint Utility of preoperative functional magnetic resonance imaging for identifying language cortices in patients with vascular malformations
    Nader Pouratian
    Department of Neurology, UCLA School of Medicine, University of California, Los Angeles, USA
    J Neurosurg 97:21-32. 2002
    ....
  32. ncbi request reprint Spatial/temporal correlation of BOLD and optical intrinsic signals in humans
    Nader Pouratian
    Laboratory of Neuro Imaging, Department of Neurology, University of California Los Angeles, Los Angeles, California, USA
    Magn Reson Med 47:766-76. 2002
    ..This study also demonstrates that fMRI maps do not precisely colocalize with ESM, rather they emphasize changes in adjacent venous/sulcal structures...