Silvina G Horovitz

Summary

Affiliation: National Institutes of Health
Country: USA

Publications

  1. ncbi request reprint Low frequency BOLD fluctuations during resting wakefulness and light sleep: a simultaneous EEG-fMRI study
    Silvina G Horovitz
    Advanced MRI Section, LFMI, NINDS, National Institutes of Health, Bethesda, Maryland, USA
    Hum Brain Mapp 29:671-82. 2008
  2. ncbi request reprint Simultaneous recording of event-related auditory oddball response using transcranial near infrared optical topography and surface EEG
    Richard P Kennan
    Department of Medicine, Albert Einstein College of Medicine, USA
    Neuroimage 16:587-92. 2002
  3. ncbi request reprint Parametric design and correlational analyses help integrating fMRI and electrophysiological data during face processing
    Silvina G Horovitz
    Institute of Imaging Science, Vanderbilt University, Nashville, TN 37203, USA
    Neuroimage 22:1587-95. 2004
  4. pmc Low-frequency fluctuations in the cardiac rate as a source of variance in the resting-state fMRI BOLD signal
    Karin Shmueli
    Advanced MRI Section, Laboratory of Functional and Molecular Imaging, National Institute of Neurological Disorders and Stroke, National Institutes of Health, 10 Center Drive, Bldg 10, Rm B1D 728, Bethesda, MD 20892 1065, USA
    Neuroimage 38:306-20. 2007
  5. pmc Functional anatomy of writing with the dominant hand
    Silvina G Horovitz
    Human Motor Control Section, Medical Neurology Branch, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, Maryland, United States of America
    PLoS ONE 8:e67931. 2013
  6. pmc Anatomical correlates of blepharospasm
    Silvina G Horovitz
    Human Motor Control Section, Medical Neurology Branch, National Institute of Neurological Disorders and Stroke, 10 Center Drive, Bdg10 7D37, Bethesda, MD, USA
    Transl Neurodegener 1:12. 2012
  7. pmc Decoupling of the brain's default mode network during deep sleep
    Silvina G Horovitz
    Human Motor Control Section, Medical Neurology Branch, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD 20892, USA
    Proc Natl Acad Sci U S A 106:11376-81. 2009
  8. doi request reprint Metabolic origin of BOLD signal fluctuations in the absence of stimuli
    Masaki Fukunaga
    Advanced MRI, LFMI, NINDS, National Institutes of Health, Bethesda, Maryland 20892 1065, USA
    J Cereb Blood Flow Metab 28:1377-87. 2008
  9. pmc Rhythmic alternating patterns of brain activity distinguish rapid eye movement sleep from other states of consciousness
    Ho Ming Chow
    Language Section, Voice, Speech, and Language Branch, National Institute on Deafness and Other Communication Disorders, National Institutes of Health, Bethesda, MD 20892, USA
    Proc Natl Acad Sci U S A 110:10300-5. 2013
  10. pmc Sources of functional magnetic resonance imaging signal fluctuations in the human brain at rest: a 7 T study
    Marta Bianciardi
    Advanced MRI Section, LFMI, NINDS, National Institutes of Health, Bethesda, MD 20892 1065, USA
    Magn Reson Imaging 27:1019-29. 2009

Collaborators

Detail Information

Publications18

  1. ncbi request reprint Low frequency BOLD fluctuations during resting wakefulness and light sleep: a simultaneous EEG-fMRI study
    Silvina G Horovitz
    Advanced MRI Section, LFMI, NINDS, National Institutes of Health, Bethesda, Maryland, USA
    Hum Brain Mapp 29:671-82. 2008
    ..These results suggest that activity in areas such as the default-mode network and primary sensory cortex, as measured from BOLD fMRI fluctuations, does not require a level of consciousness typical of wakefulness...
  2. ncbi request reprint Simultaneous recording of event-related auditory oddball response using transcranial near infrared optical topography and surface EEG
    Richard P Kennan
    Department of Medicine, Albert Einstein College of Medicine, USA
    Neuroimage 16:587-92. 2002
    ..This is the first demonstration of simultaneous ERP electrical recording and non-invasive optical mapping in human subjects, which promises to be an important tool in the characterization of both normal and abnormal brain function...
  3. ncbi request reprint Parametric design and correlational analyses help integrating fMRI and electrophysiological data during face processing
    Silvina G Horovitz
    Institute of Imaging Science, Vanderbilt University, Nashville, TN 37203, USA
    Neuroimage 22:1587-95. 2004
    ..Parametric designs may be developed further to provide some timing information on fMRI activity and help identify the generators of ERP signals...
  4. pmc Low-frequency fluctuations in the cardiac rate as a source of variance in the resting-state fMRI BOLD signal
    Karin Shmueli
    Advanced MRI Section, Laboratory of Functional and Molecular Imaging, National Institute of Neurological Disorders and Stroke, National Institutes of Health, 10 Center Drive, Bldg 10, Rm B1D 728, Bethesda, MD 20892 1065, USA
    Neuroimage 38:306-20. 2007
    ..This suggests that including such time-shifted cardiac rate regressors will be beneficial for explaining physiological noise variance and will thereby improve the statistical power in future task-based and resting-state fMRI studies...
  5. pmc Functional anatomy of writing with the dominant hand
    Silvina G Horovitz
    Human Motor Control Section, Medical Neurology Branch, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, Maryland, United States of America
    PLoS ONE 8:e67931. 2013
    ....
  6. pmc Anatomical correlates of blepharospasm
    Silvina G Horovitz
    Human Motor Control Section, Medical Neurology Branch, National Institute of Neurological Disorders and Stroke, 10 Center Drive, Bdg10 7D37, Bethesda, MD, USA
    Transl Neurodegener 1:12. 2012
    ..abstract:..
  7. pmc Decoupling of the brain's default mode network during deep sleep
    Silvina G Horovitz
    Human Motor Control Section, Medical Neurology Branch, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD 20892, USA
    Proc Natl Acad Sci U S A 106:11376-81. 2009
    ..This suggests that DMN may play an important role in the sustenance of conscious awareness...
  8. doi request reprint Metabolic origin of BOLD signal fluctuations in the absence of stimuli
    Masaki Fukunaga
    Advanced MRI, LFMI, NINDS, National Institutes of Health, Bethesda, Maryland 20892 1065, USA
    J Cereb Blood Flow Metab 28:1377-87. 2008
    ..79+/-0.54 and 1.66+/-0.67, respectively), but both were lower than the BPR during BH. These data suggest that resting-state activity, at least in part, represents a metabolic process...
  9. pmc Rhythmic alternating patterns of brain activity distinguish rapid eye movement sleep from other states of consciousness
    Ho Ming Chow
    Language Section, Voice, Speech, and Language Branch, National Institute on Deafness and Other Communication Disorders, National Institutes of Health, Bethesda, MD 20892, USA
    Proc Natl Acad Sci U S A 110:10300-5. 2013
    ..1 to 0.01 Hz. This unique spatiotemporal pattern suggests a model for REM sleep that may be consistent with its role in dream formation and memory consolidation...
  10. pmc Sources of functional magnetic resonance imaging signal fluctuations in the human brain at rest: a 7 T study
    Marta Bianciardi
    Advanced MRI Section, LFMI, NINDS, National Institutes of Health, Bethesda, MD 20892 1065, USA
    Magn Reson Imaging 27:1019-29. 2009
    ..Under the conditions of this study, spontaneous neuronal activity is one of the major contributors to the measured fMRI signal fluctuations, increasing almost twofold relative to earlier experiments under similar conditions at 3 T...
  11. pmc Modulation of spontaneous fMRI activity in human visual cortex by behavioral state
    Marta Bianciardi
    Advanced MRI Section, Laboratory of Functional and Molecular Imaging, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD 20892 1065, USA
    Neuroimage 45:160-8. 2009
    ....
  12. pmc Individuated finger control in focal hand dystonia: an fMRI study
    Ryan D Moore
    Human Motor Control Section, Medical Neurology Branch, National Institute of Neurological Disorders and Stroke, NIH, Building 10, Room 7D37, 10 Center Drive, MSC 1428, Bethesda, MD 20892 1428, USA
    Neuroimage 61:823-31. 2012
    ..To better understand deficient selective motor control in focal hand dystonia by determining changes in striatal activation and connectivity in patients performing individuated finger control...
  13. ncbi request reprint Large-amplitude, spatially correlated fluctuations in BOLD fMRI signals during extended rest and early sleep stages
    Masaki Fukunaga
    Advanced MRI, LFMI, NINDS, National Institutes of Health, Bethesda, MD 20892 1065, USA
    Magn Reson Imaging 24:979-92. 2006
    ..These findings suggest that resting-state activity continues during sleep and does not require active cognitive processes or conscious awareness...
  14. pmc Sleep and the functional connectome
    Dante Picchioni
    Department of Behavioral Biology, Walter Reed Army Institute of Research, Silver Spring, MD, USA
    Neuroimage 80:387-96. 2013
    ..In this review, we will discuss examples of this for memory, arousal, and consciousness after providing a brief background on sleep and on studying it with fMRI. ..
  15. pmc In vivo neurochemistry of primary focal hand dystonia: a magnetic resonance spectroscopic neurometabolite profiling study at 3T
    Priyantha Herath
    Medical Neurology Branch, Human Motor Control Section, NINDS NIH, Bethesda, Maryland, USA
    Mov Disord 25:2800-8. 2010
    ..Twenty-two patients with focal hand dystonia and 22 healthy controls were studied. No significant differences in GABA were observed between the groups in either the sensorimotor cortex or in the basal ganglia...
  16. doi request reprint Real time BOLD functional MRI neuro-feedback affects functional connectivity
    Silvina G Horovitz
    National Institute of Neurological Disorders and Stroke, Bethesda, MD 20892, USA
    Conf Proc IEEE Eng Med Biol Soc 2010:4270-3. 2010
    ..The presence of the neuro-feedback not only induces correlations between the visual and motor areas, but also increases basal ganglia involvement and bilateral motor cortex connectivity...
  17. pmc fMRI differences between early and late stage-1 sleep
    Dante Picchioni
    Division of Psychiatry and Neuroscience, Walter Reed Army Institute of Research, Silver Spring, MD 20910, USA
    Neurosci Lett 441:81-5. 2008
    ..These differences may also have specific relevance to understanding the process of sleep onset as well as the neural mechanisms of performance lapses during sleep deprivation...
  18. ncbi request reprint Simultaneous event-related potential and near-infrared spectroscopic studies of semantic processing
    Silvina G Horovitz
    Engineering and Applied Science, Yale University, New Haven, Connecticut, USA
    Hum Brain Mapp 22:110-5. 2004
    ..This, together with the feasibility of simultaneous ERP recording, makes NIROT attractive as a new approach to studying language function in healthy subjects as well as in those with functional abnormalities...