Peka Christova, PhD
Physicist, Minneapolis VA Medical CenterVA Medical Center (VAMC)

Publications

Pages: 1June 2023 through November 2015 • 2September 2015 through August 1999 • 3January 1999 through January 1990
  1. Diagnosis of posttraumatic stress disorder (Post-traumatic Stress DisorderPost-traumatic Stress Disorder (PTSD)A complex psychiatric syndrome that develops in response to trauma exposure. Individuals with PTSD experience intrusive recollections or reexperiencing of the traumatic event, avoidance of trauma reminders, emotional numbing, and hyperarousal. In addition, PTSD is associated with high rates of concomitant physical and mental health problems, increased health care use, and impairment in social and occupational functioning. Almost 7% of the general population and up to 30% of veterans meet lifetime criteria for PTSD. Indeed, PTSD is one of the most common psychiatric disorders, representing a significant and costly public health concern.) based on correlations of prewhitened Functional Magnetic Resonance ImagingFunctional Magnetic Resonance Imaging (fMRI)A functional neuroimaging procedure using MRI technology that measures brain activity by detecting changes associated with blood flow. This technique relies on the fact that cerebral blood flow and neuronal activation are coupled. When an area of the brain is in use, blood flow to that region also increases.[citation needed] The primary form of fMRI uses the blood-oxygen-level dependent (BOLD) contrast, discovered by Seiji Ogawa. This is a type of specialized brain and body scan used to map neural activity in the brain or spinal cord of humans or other animals by imaging the change in blood flow (hemodynamic response) related to energy use by brain cells. Since the early 1990s, fMRI has come to dominate brain mapping research because it does not require people to undergo shots, surgery, or to ingest substances, or be exposed to ionising radiation, etc. data: outcomes and areas involved Experimental Brain Research (2015, September) Christova P, James L, Engdahl B, Lewis S, & Georgopoulos AP
  2. Cognitive mechanisms underlying instructed choice exploration of small city maps Frontiers in Neuroscience (2015, March) Sakellaridi S, Christova P, Christopoulos V, Vialard A, Peponis J, & Georgopoulos AP
  3. Innovations in Resting-state fMRIFunctional Magnetic Resonance Imaging (fMRI)A functional neuroimaging procedure using MRI technology that measures brain activity by detecting changes associated with blood flow. This technique relies on the fact that cerebral blood flow and neuronal activation are coupled. When an area of the brain is in use, blood flow to that region also increases.[citation needed] The primary form of fMRI uses the blood-oxygen-level dependent (BOLD) contrast, discovered by Seiji Ogawa. This is a type of specialized brain and body scan used to map neural activity in the brain or spinal cord of humans or other animals by imaging the change in blood flow (hemodynamic response) related to energy use by brain cells. Since the early 1990s, fMRI has come to dominate brain mapping research because it does not require people to undergo shots, surgery, or to ingest substances, or be exposed to ionising radiation, etc. and Magnetoencephalography Magnetoencephalography (MEG)A noninvasive technique that detects magnetic fields above the surface of the head produced by postsynaptic potentials in the brain. Asian Journal of Physics (2014, January) Christova P
  4. Exploring small city maps Experimental Brain Research (2012, November) Christova P, Scoppa M, Peponis J, & Georgopoulos AP
  5. A compact and realistic cerebral cortical layout derived from prewhitened resting-state fMRIFunctional Magnetic Resonance Imaging (fMRI)A functional neuroimaging procedure using MRI technology that measures brain activity by detecting changes associated with blood flow. This technique relies on the fact that cerebral blood flow and neuronal activation are coupled. When an area of the brain is in use, blood flow to that region also increases.[citation needed] The primary form of fMRI uses the blood-oxygen-level dependent (BOLD) contrast, discovered by Seiji Ogawa. This is a type of specialized brain and body scan used to map neural activity in the brain or spinal cord of humans or other animals by imaging the change in blood flow (hemodynamic response) related to energy use by brain cells. Since the early 1990s, fMRI has come to dominate brain mapping research because it does not require people to undergo shots, surgery, or to ingest substances, or be exposed to ionising radiation, etc. time series: Cherniak's adjacency rule, size law, and metamodule grouping upheld Frontiers in Neuroanatomy (2012, September) Lewis S, Christova P, Jerde T, & Georgopoulos AP
  6. True associations between resting fMRIFunctional Magnetic Resonance Imaging (fMRI)A functional neuroimaging procedure using MRI technology that measures brain activity by detecting changes associated with blood flow. This technique relies on the fact that cerebral blood flow and neuronal activation are coupled. When an area of the brain is in use, blood flow to that region also increases.[citation needed] The primary form of fMRI uses the blood-oxygen-level dependent (BOLD) contrast, discovered by Seiji Ogawa. This is a type of specialized brain and body scan used to map neural activity in the brain or spinal cord of humans or other animals by imaging the change in blood flow (hemodynamic response) related to energy use by brain cells. Since the early 1990s, fMRI has come to dominate brain mapping research because it does not require people to undergo shots, surgery, or to ingest substances, or be exposed to ionising radiation, etc. time series based on innovations Journal of Neural Engineering (2011, June) Christova P, Lewis S, Jerde T, Lynch J, & Georgopoulos AP
  7. Application of Branched Electrodes for Stable, Selective Recording Single Motor-Unit Discharges in Humans Biomedical Engineering (2009, August) Kossev A, & Christova P
  8. A voxel-by-voxel parametric fMRIFunctional Magnetic Resonance Imaging (fMRI)A functional neuroimaging procedure using MRI technology that measures brain activity by detecting changes associated with blood flow. This technique relies on the fact that cerebral blood flow and neuronal activation are coupled. When an area of the brain is in use, blood flow to that region also increases.[citation needed] The primary form of fMRI uses the blood-oxygen-level dependent (BOLD) contrast, discovered by Seiji Ogawa. This is a type of specialized brain and body scan used to map neural activity in the brain or spinal cord of humans or other animals by imaging the change in blood flow (hemodynamic response) related to energy use by brain cells. Since the early 1990s, fMRI has come to dominate brain mapping research because it does not require people to undergo shots, surgery, or to ingest substances, or be exposed to ionising radiation, etc. study of motor mental rotation: hemispheric specialization and gender differences in neural processing efficiency Experimental Brain Research (2008, July) Christova P, Lewis S, Tagaris GA, Ugurbil K, & Georgopoulos AP
  9. Impaired Eye Movements in Presymptomatic Spinocerebellar Ataxia Type 6 Archives of Neurology (2008, April) Christova P, Anderson JH, & Gomez CM
  10. Novel CACNA1A mutation causes febrile episodic ataxia with interictal cerebellar deficits Annals of Neurology (2003, October) Subramony SH, Schott KS, Raike RS, Callahan J, Langford LR, Christova P, Anderson JH, & Gomez CM
  11. Spinocerebellar Ataxia in Monozygotic Twins Archives of Neurology (2002, December) Anderson JH, Christova P, Xie TD, Schott KS, Ward K, & Gomez CM
  12. The vestibulo-ocular reflex and velocity storage in spinocerebellar ataxia 8 Archives Italiennes de Biologie (2002, October) Anderson JH, Yavuz MC, Kazar BM, Christova P, & Gomez CM
  13. Eye position feedback in a model of the vestibulo-ocular reflex for spino-cerebellar ataxia 6 2001 Conference Proceedings of the 23rd Annual International Conference of the IEEE Engineering in Medicine and Biology Society (2001, October) Anderson JH, Yavuz MC, Kazar BM, Christova P, & Gomez CM
  14. Human motor unit recruitment and derecruitment during long lasting intermittent contractions Journal of Electromyography and Kinesiology (2001, June) Christova P, & Kossev A
  15. Human motor unit activity during concentric and eccentric movements Electromyography and Clinical Neurophysiology (2000, September) Christova P, & Kossev A
  16. Surface EMG Changes during Sustained Submaximal High Voluntary Contractions Comptes Rendus de l'Academie Bulgare des Sciencesi (2000, January) Kristev I, Christova P, Chichov V, & Kossev A
  17. Surface EMG Changes during Sustained Maximal Contraction Efforts Comptes Rendus de l'Academie Bulgare des Sciencesi (2000, January) Kristev I, Christova P, Chichov V, & Kossev A
  18. Modulation of single motor unit discharge pattern during the premovement period Biomed Techn (2000, January) Christova L, Wolf W, Dimitrova M, Christova P, & Kossev A
  19. Branched surface electrodes and measurement of propagation velocity of excitation along muscle fibers Biomed Techn (2000, January) Kristev I, Christova P, Christova L, & Kossev A
  20. Surface EMG recorded by branched electrodes during sustained muscle activity Journal of Electromyography and Kinesiology (1999, August) Christova P, Kossev A, Kristev I, & Chichov V