Peter Herman, MD, PhD
Research Scientist in Radiology and Biomedical Imaging
Research & Publications
Biography
Locations
Research Summary
My research interest based on the description of blood circulation and energy utilization in the brain. We describe the circulatory changes in the actively working and resting brain. For this purpose we use non-invasive (not harmful) or minimally invasive techniques, such as the magnetic resonance imaging or blood flow measurement with laser light. Additionally we measure the unique electrical activities of the brain cells. We study how the blood and oxygen supply are connected to the actual demand of the brain. We do our work on deeply sleeping white laboratory rats.
Coauthors
Research Interests
Cerebrovascular Circulation; Hematocrit; Membrane Potentials; Oxygen Consumption; Fractals
Selected Publications
- 430. Calibrated fMRI Sensitive to Ketamine-Related Increases Throughout the CortexDriesen N, Herman P, Rowland M, Thompson G, Qiu M, He G, Criscuolo E, Fineberg S, Barron D, Helgeson L, Lacadie C, Chow R, Gueorguieva R, Straun T, Krystal J, Hyder F. 430. Calibrated fMRI Sensitive to Ketamine-Related Increases Throughout the Cortex Biological Psychiatry 2023, 93: s268-s269. DOI: 10.1016/j.biopsych.2023.02.670.
- Fluorescently-tagged magnetic protein nanoparticles for high-resolution optical and ultra-high field magnetic resonance dual-modal cerebral angiographyMishra S, Herman P, Crair M, Constable R, Walsh J, Akif A, Verhagen J, Hyder F. Fluorescently-tagged magnetic protein nanoparticles for high-resolution optical and ultra-high field magnetic resonance dual-modal cerebral angiography Nanoscale 2022, 14: 17770-17788. PMID: 36437785, PMCID: PMC9850399, DOI: 10.1039/d2nr04878g.
- Functional network properties derived from wide-field calcium imaging differ with wakefulness and across cell typeO’Connor D, Mandino F, Shen X, Horien C, Ge X, Herman P, Hyder F, Crair M, Papademetris X, Lake E, Constable. Functional network properties derived from wide-field calcium imaging differ with wakefulness and across cell type NeuroImage 2022, 264: 119735. PMID: 36347441, PMCID: PMC9808917, DOI: 10.1016/j.neuroimage.2022.119735.
- Lateralized Supraspinal Functional Connectivity Correlate with Pain and Motor Dysfunction in Rat Hemicontusion Cervical Spinal Cord InjurySanganahalli B, Pavuluri S, Chitturi J, Herman P, Elkabes S, Heary R, Hyder F, Kannurpatti S. Lateralized Supraspinal Functional Connectivity Correlate with Pain and Motor Dysfunction in Rat Hemicontusion Cervical Spinal Cord Injury Neurotrauma Reports 2022, 3: 421-432. PMID: 36337081, PMCID: PMC9622206, DOI: 10.1089/neur.2022.0040.
- A 3D atlas of functional human brain energetic connectome based on neuropil distribution.Yu Y, Akif A, Herman P, Cao M, Rothman D, Carson R, Agarwal D, Evans A, Hyder F. A 3D atlas of functional human brain energetic connectome based on neuropil distribution. Cerebral Cortex 2022, 33: 3996-4012. PMID: 36104858, PMCID: PMC10068297, DOI: 10.1093/cercor/bhac322.
- Fluorescently-Tagged Magnetic Protein Nanoparticles for High-Resolution Optical and Ultra-High Field Magnetic Resonance Dual-Modal Cerebral AngiographyMishra S, Herman P, Crair M, Constable R, Walsh J, Akif A, Verhagen J, Hyder F. Fluorescently-Tagged Magnetic Protein Nanoparticles for High-Resolution Optical and Ultra-High Field Magnetic Resonance Dual-Modal Cerebral Angiography Nanoscale 2022 DOI: 10.1039/d2nr04878g.
- EEG–fMRI in Animal ModelsGummadavelli A, Sanganahalli B, Herman P, Hyder F, Blumenfeld H. EEG–fMRI in Animal Models 2022, 663-694. DOI: 10.1007/978-3-031-07121-8_27.
- CMR02 Mapping by Calibrated fMRIHyder F, Shu C, Herman P, Sanganahalli B, Coman D, Rothman D. CMR02 Mapping by Calibrated fMRI 2013, 20130539: 85-109. DOI: 10.1201/b14814-5.
- Real-time fractal signal processing in the time domainHartmann A, Mukli P, Nagy Z, Kocsis L, Hermán P, Eke A. Real-time fractal signal processing in the time domain Physica A Statistical Mechanics And Its Applications 2013, 392: 89-102. DOI: 10.1016/j.physa.2012.08.002.
- Fractal analysis of spontaneous fluctuations of the BOLD signal in rat brainHerman P, Sanganahalli BG, Hyder F, Eke A. Fractal analysis of spontaneous fluctuations of the BOLD signal in rat brain NeuroImage 2011, 58: 1060-1069. PMID: 21777682, PMCID: PMC3705180, DOI: 10.1016/j.neuroimage.2011.06.082.
- Hypersensitivity to Thromboxane Receptor Mediated Cerebral Vasomotion and CBF Oscillations during Acute NO-Deficiency in RatsHorváth B, Lenzsér G, Benyó B, Németh T, Benkő R, Iring A, Hermán P, Komjáti K, Lacza Z, Sándor P, Benyó Z. Hypersensitivity to Thromboxane Receptor Mediated Cerebral Vasomotion and CBF Oscillations during Acute NO-Deficiency in Rats PLOS ONE 2010, 5: e14477. PMID: 21217826, PMCID: PMC3013104, DOI: 10.1371/journal.pone.0014477.
- Cerebral oxygen demand for short‐lived and steady‐state eventsHerman P, Sanganahalli BG, Blumenfeld H, Hyder F. Cerebral oxygen demand for short‐lived and steady‐state events Journal Of Neurochemistry 2009, 109: 73-79. PMID: 19393011, PMCID: PMC2714475, DOI: 10.1111/j.1471-4159.2009.05844.x.
- Oxidative Neuroenergetics in Event-Related ParadigmsSanganahalli BG, Herman P, Blumenfeld H, Hyder F. Oxidative Neuroenergetics in Event-Related Paradigms Journal Of Neuroscience 2009, 29: 1707-1718. PMID: 19211878, PMCID: PMC2760964, DOI: 10.1523/jneurosci.5549-08.2009.
- Fractal Characterization of Complexity in Dynamic Signals: Application to Cerebral HemodynamicsHerman P, Kocsis L, Eke A. Fractal Characterization of Complexity in Dynamic Signals: Application to Cerebral Hemodynamics 2009, 489: 23-40. PMID: 18839086, DOI: 10.1007/978-1-59745-543-5_2.
- Frequency‐dependent tactile responses in rat brain measured by functional MRISanganahalli BG, Herman P, Hyder F. Frequency‐dependent tactile responses in rat brain measured by functional MRI NMR In Biomedicine 2008, 21: 410-416. PMID: 18435491, PMCID: PMC2774500, DOI: 10.1002/nbm.1259.
- Towards a novel haemoglobin-based oxygen carrier: Euro-PEG-Hb, physico-chemical properties, vasoactivity and renal filtrationPortörő I, Kocsis L, Hermán P, Caccia D, Perrella M, Ronda L, Bruno S, Bettati S, Micalella C, Mozzarelli A, Varga A, Vas M, Lowe K, Eke A. Towards a novel haemoglobin-based oxygen carrier: Euro-PEG-Hb, physico-chemical properties, vasoactivity and renal filtration Biochimica Et Biophysica Acta 2008, 1784: 1402-1409. PMID: 18405674, DOI: 10.1016/j.bbapap.2008.03.005.
- Energetics of neuronal signaling and fMRI activityMaandag NJ, Coman D, Sanganahalli BG, Herman P, Smith AJ, Blumenfeld H, Shulman RG, Hyder F. Energetics of neuronal signaling and fMRI activity Proceedings Of The National Academy Of Sciences Of The United States Of America 2007, 104: 20546-20551. PMID: 18079290, PMCID: PMC2154468, DOI: 10.1073/pnas.0709515104.
- Influence of the heme-oxygenase pathway on cerebrocortical blood flowLeszl-Ishiguro M, Horváth B, Johnson R, Johnson F, Lenzsér G, Hermán P, Horváth E, Benyó Z. Influence of the heme-oxygenase pathway on cerebrocortical blood flow Neuroreport 2007, 18: 1193-1197. PMID: 17589325, DOI: 10.1097/wnr.0b013e3282202459.
- Untersuchung des Wirkmechanismus bei pharyngealer selektiver HirnkühlungKipfmüller F, Maegele M, Herman P, Doll H, Schurer L, Hyder F, Trübel H. Untersuchung des Wirkmechanismus bei pharyngealer selektiver Hirnkühlung Zeitschrift Für Geburtshilfe Und Neonatologie 2007, 211 DOI: 10.1055/s-2007-983130.
- Veränderungen des zerebralen Blutflusses während pharyngealer und externer HirnkühlungTrübel H, Maegele M, Lefering R, Doll H, Schurer L, Kipfmüller F, Hyder F, Herman P. Veränderungen des zerebralen Blutflusses während pharyngealer und externer Hirnkühlung Zeitschrift Für Geburtshilfe Und Neonatologie 2007, 211 DOI: 10.1055/s-2007-983131.
- The modified Beer–Lambert law revisitedKocsis L, Herman P, Eke A. The modified Beer–Lambert law revisited Physics In Medicine And Biology 2006, 51: n91-n98. PMID: 16481677, DOI: 10.1088/0031-9155/51/5/n02.
- Mathematical model for the estimation of hemodynamic and oxygenation variables by tissue spectroscopyKocsis L, Herman P, Eke A. Mathematical model for the estimation of hemodynamic and oxygenation variables by tissue spectroscopy Journal Of Theoretical Biology 2006, 241: 262-275. PMID: 16413035, DOI: 10.1016/j.jtbi.2005.11.033.
- Nonlinear Analysis of Blood Cell Flux Fluctuations in the Rat Brain Cortex during Stepwise Hypotension ChallengeHerman P, Eke A. Nonlinear Analysis of Blood Cell Flux Fluctuations in the Rat Brain Cortex during Stepwise Hypotension Challenge Cerebrovascular And Brain Metabolism Reviews 2006, 26: 1189-1197. PMID: 16395288, DOI: 10.1038/sj.jcbfm.9600266.
- Fractal and Noisy CBV Dynamics in Humans: Influence of Age and GenderEke A, Hermán P, Hajnal M. Fractal and Noisy CBV Dynamics in Humans: Influence of Age and Gender Cerebrovascular And Brain Metabolism Reviews 2005, 26: 891-898. PMID: 16292253, DOI: 10.1038/sj.jcbfm.9600243.
- Age increases overall complexity of human spontaneous CBV fluctuationsEke A, Herman P, Hajnal M. Age increases overall complexity of human spontaneous CBV fluctuations Cerebrovascular And Brain Metabolism Reviews 2005, 25: s181-s181. DOI: 10.1038/sj.jcbfm.9591524.0181.
- Fractal properties of neurophysiologic signals in rat somatosensory cortexHerman P, Wahab S, Eke A, Hyder F. Fractal properties of neurophysiologic signals in rat somatosensory cortex Cerebrovascular And Brain Metabolism Reviews 2005, 25: s186-s186. DOI: 10.1038/sj.jcbfm.9591524.0186.
- Fractal patterns of local and global CBF in rat brain during hypotensionHerman P, Trübel H, Hyder F, Eke A. Fractal patterns of local and global CBF in rat brain during hypotension Cerebrovascular And Brain Metabolism Reviews 2005, 25: s195-s195. DOI: 10.1038/sj.jcbfm.9591524.0195.
- Fractal correlation structure in fMRI data of rat brainHerman P, Kida I, Sanganahalli B, Hyder F, Eke A. Fractal correlation structure in fMRI data of rat brain Cerebrovascular And Brain Metabolism Reviews 2005, 25: s379-s379. DOI: 10.1038/sj.jcbfm.9591524.0379.
- Effects of volatile agents on neurophysiology in α-chloralose anesthetized ratsSanganahalli B, Herman P, Hyder F. Effects of volatile agents on neurophysiology in α-chloralose anesthetized rats Cerebrovascular And Brain Metabolism Reviews 2005, 25: s200-s200. DOI: 10.1038/sj.jcbfm.9591524.0200.
- Influence of volatile induction agents on fMRI and neural activitySanganahalli B, Herman P, Hyder F. Influence of volatile induction agents on fMRI and neural activity Cerebrovascular And Brain Metabolism Reviews 2005, 25: s395-s395. DOI: 10.1038/sj.jcbfm.9591524.0395.
- Effects of isoflurane induction on inter-animal reproducibilitySanganahalli B, Herman P, Hyder F. Effects of isoflurane induction on inter-animal reproducibility Cerebrovascular And Brain Metabolism Reviews 2005, 25: s397-s397. DOI: 10.1038/sj.jcbfm.9591524.0397.
- Volatile induction agents affect adaptation in α-chloralose anesthetized ratSanganahalli B, Herman P, Hyder F. Volatile induction agents affect adaptation in α-chloralose anesthetized rat Cerebrovascular And Brain Metabolism Reviews 2005, 25: s401-s401. DOI: 10.1038/sj.jcbfm.9591524.0401.
- Dauer epileptischer Anfälle während selektiver pharyngealer Hirnkühlung / Duration of induced seizures during selective pharyngeal brain coolingTrübel H, Herman P, Kampmann C, Novotny E, Hyder F. Dauer epileptischer Anfälle während selektiver pharyngealer Hirnkühlung / Duration of induced seizures during selective pharyngeal brain cooling Biomedical Engineering / Biomedizinische Technik 2004, 49: 278-280. DOI: 10.1515/bmt.2004.052.
- Nichtinvasive Messung der Hirntemperatur mittels 1H-NMR-SpektroskopieTrübel H, Herman P, Kampmann C, Novotny E, Hyder F. Nichtinvasive Messung der Hirntemperatur mittels 1H-NMR-Spektroskopie Zeitschrift Für Geburtshilfe Und Neonatologie 2004, 208 DOI: 10.1055/s-2004-829409.
- Selektive Hirnkühlung zur Therapie epileptischer AnfälleTrübel H, Herman P, Kampmann C, Novotny E, Hyder F. Selektive Hirnkühlung zur Therapie epileptischer Anfälle Zeitschrift Für Geburtshilfe Und Neonatologie 2004, 208 DOI: 10.1055/s-2004-829410.
- Brain temperature changes during selective brain coolingTrübel H, Herman P, Kampmann C, Huth R, Maciejewski P, Hyder F, Novotny E. Brain temperature changes during selective brain cooling Critical Care 2003, 7: p091. PMCID: PMC3301536, DOI: 10.1186/cc1980.
- A Reinvestigation of the Extended Counting Method for Fractal Analysis of the Pial VasculatureHermán P, Kocsis L, Eke A. A Reinvestigation of the Extended Counting Method for Fractal Analysis of the Pial Vasculature Cerebrovascular And Brain Metabolism Reviews 2002, 22: 363-365. DOI: 10.1097/00004647-200203000-00015.
- Fractal characterization of complexity in temporal physiological signalsEke A, Herman P, Kocsis L, Kozak L. Fractal characterization of complexity in temporal physiological signals Physiological Measurement 2002, 23: r1-r38. PMID: 11876246, DOI: 10.1088/0967-3334/23/1/201.
- NO Synthase Blockade Induces Chaotic Cerebral Vasomotion via Activation of Thromboxane ReceptorsLacza Z, Hermán P, Görlach C, Hortobágyi T, Sándor P, Wahl M, Benyó Z. NO Synthase Blockade Induces Chaotic Cerebral Vasomotion via Activation of Thromboxane Receptors Stroke 2001, 32: 2609-2614. PMID: 11692025, DOI: 10.1161/hs1101.098526.
- Fractal Branching Pattern in the Pial Vasculature in the CatHermán P, Kocsis L, Eke A. Fractal Branching Pattern in the Pial Vasculature in the Cat Cerebrovascular And Brain Metabolism Reviews 2001, 21: 741-753. PMID: 11488543, DOI: 10.1097/00004647-200106000-00012.
- Physiological time series: distinguishing fractal noises from motionsEke A, Hermán P, Bassingthwaighte J, Raymond G, Percival D, Cannon M, Balla I, Ikrényi C. Physiological time series: distinguishing fractal noises from motions Pflügers Archiv - European Journal Of Physiology 2000, 439: 403-415. PMID: 10678736, DOI: 10.1007/s004249900135.
- Fractal Analysis of Spontaneous Fluctuations in Human Cerebral Hemoglobin Content and its Oxygenation Level Recorded by NIRSEke A, Hermán P. Fractal Analysis of Spontaneous Fluctuations in Human Cerebral Hemoglobin Content and its Oxygenation Level Recorded by NIRS 1999, 471: 49-55. PMID: 10659131, DOI: 10.1007/978-1-4615-4717-4_7.
- Temporal Fluctuations in Regional Red Blood Cell Flux in the Rat Brain Cortex is a Fractal ProcessEke A, Herman P, Bassingthwaighte J, Raymond G, Balla I, Ikrényi C. Temporal Fluctuations in Regional Red Blood Cell Flux in the Rat Brain Cortex is a Fractal Process 1997, 428: 703-709. PMID: 9500118, PMCID: PMC4121065, DOI: 10.1007/978-1-4615-5399-1_98.