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Stimulated Cerebral Blood Flow
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Book Synopsis Stimulated Cerebral Blood Flow by : Peter Schmiedek
Download or read book Stimulated Cerebral Blood Flow written by Peter Schmiedek and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 288 pages. Available in PDF, EPUB and Kindle. Book excerpt: Das vorliegende Buch enth{lt die Beitr{ge eines internatio- nalen Symposiumszum Thema "Stimulierte Hirndurchblutung". Vorgestellt werden zun{chst neue Erkenntnisse zur Regulation der Hinrdurchblutung. Im 2. Abschnitt kommen verschiedene Methoden zur Messung der Hirndurchblutung zur Sprache, die sowohl unter experimentellen als auch unter klinischen Be- dingungengetestet wurden. Es folgt ein Abschnitt, der ver- schiedene M|glichkeiten zur Stimulation der Hirndurchblutung aufzeigt. Im letzten Abschnitt wird aufdie Bedeutung der stimulierten Hirndurchblutungsmessung zur Bestimmung der ce- rebrovascul{ren Reservekapazit{ten hingewiesen. Dieser Para- meter hat nach den vorliegenden Untersuchungen klinisch- praktische Bedeutung, beispielsweise f}r die Indikations- stellung bei cerebrovascul{ren Eingriffen zur Isch{mie-Pro- phylaxe.
Book Synopsis The Cerebral Circulation by : Marilyn J. Cipolla
Download or read book The Cerebral Circulation written by Marilyn J. Cipolla and published by Biota Publishing. This book was released on 2016-07-28 with total page 82 pages. Available in PDF, EPUB and Kindle. Book excerpt: This e-book will review special features of the cerebral circulation and how they contribute to the physiology of the brain. It describes structural and functional properties of the cerebral circulation that are unique to the brain, an organ with high metabolic demands and the need for tight water and ion homeostasis. Autoregulation is pronounced in the brain, with myogenic, metabolic and neurogenic mechanisms contributing to maintain relatively constant blood flow during both increases and decreases in pressure. In addition, unlike peripheral organs where the majority of vascular resistance resides in small arteries and arterioles, large extracranial and intracranial arteries contribute significantly to vascular resistance in the brain. The prominent role of large arteries in cerebrovascular resistance helps maintain blood flow and protect downstream vessels during changes in perfusion pressure. The cerebral endothelium is also unique in that its barrier properties are in some way more like epithelium than endothelium in the periphery. The cerebral endothelium, known as the blood-brain barrier, has specialized tight junctions that do not allow ions to pass freely and has very low hydraulic conductivity and transcellular transport. This special configuration modifies Starling's forces in the brain microcirculation such that ions retained in the vascular lumen oppose water movement due to hydrostatic pressure. Tight water regulation is necessary in the brain because it has limited capacity for expansion within the skull. Increased intracranial pressure due to vasogenic edema can cause severe neurologic complications and death.
Book Synopsis Stimulated Cerebral Blood Flow by : Peter Schmiedek
Download or read book Stimulated Cerebral Blood Flow written by Peter Schmiedek and published by Springer. This book was released on 1992-03-20 with total page 276 pages. Available in PDF, EPUB and Kindle. Book excerpt: Proceedings from a meeting on stimulated cerebral blood flow.
Book Synopsis Progress in Brain Research by : J. P. Schadé
Download or read book Progress in Brain Research written by J. P. Schadé and published by . This book was released on 1963 with total page 438 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Regional Cerebral Blood Flow During Stimulation of the Seventh Cranial Nerve by : Virgilio Dizon Salanga
Download or read book Regional Cerebral Blood Flow During Stimulation of the Seventh Cranial Nerve written by Virgilio Dizon Salanga and published by . This book was released on 1972 with total page 128 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Regional Cerebral Blood Flow Responses to Auditory and Tactile Stimulation Presented Alone and in Combination by : Thomas A. Novack
Download or read book Regional Cerebral Blood Flow Responses to Auditory and Tactile Stimulation Presented Alone and in Combination written by Thomas A. Novack and published by . This book was released on 1979 with total page 118 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Regional Cerebral Blood Flow During Verbal Auditory Stimulation by : Norma Alice Cooke
Download or read book Regional Cerebral Blood Flow During Verbal Auditory Stimulation written by Norma Alice Cooke and published by . This book was released on 1978 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Monitoring of Cerebral Blood Flow and Metabolism in Intensive Care by : Andreas Unterberg
Download or read book Monitoring of Cerebral Blood Flow and Metabolism in Intensive Care written by Andreas Unterberg and published by Springer. This book was released on 2012-02-28 with total page 125 pages. Available in PDF, EPUB and Kindle. Book excerpt: Until recently, monitoring of cerebral blood flow and metabolism was an unattained goal. Determination of cerebral blood flow was limited to intermittent measurements and particularly difficult to perform in critically ill patients. Meanwhile there are techniques available, however, to monitor cerebral blood flow and cerebral oxygenation, both globally and regionally. Therefore we thought it worthwhile to discuss these new continuous techniques and to compare them with well-known techniques which discontinuously measure CBF. For that purpose, an international workshop with some leading experts in the field was held in October 1992 in Berlin. The workshop consisted of about 20 lectures, either reviews on a special topic, or latest results. These contributions were given by invitation and were extensively discussed. Unfortunately it is impossible to reproduce the discussions. On the other hand, all speakers delivered a manuscript promptly after the meeting so that we were able to edit them within a short time. Since monitoring of cerebral blood flow in intensive care is a rapidly growing and changing topic, the written contributions should be quickly available. Authors, editors and publishers have tried to come close to this ideal. As editors we would like to thank the authors and the publishers who enabled us to come out with this volume of the proceedings as early as possible.
Book Synopsis Neurotransmitters and the Cerebral Circulation by : E. T. MacKenzie
Download or read book Neurotransmitters and the Cerebral Circulation written by E. T. MacKenzie and published by Raven Press (ID). This book was released on 1984 with total page 282 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Investigation of the Correlation Between Cerebral Blood Flow and BOLD by : Huijing Yang
Download or read book Investigation of the Correlation Between Cerebral Blood Flow and BOLD written by Huijing Yang and published by . This book was released on 2014 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt: There are lots of dynamic process exist co-currently and spontaneously when the neurons in the brain are activated by the external stimulation, like cerebral blood flow (CBF) change, oxygen extraction change. The study of the dynamic relationship among these physiological variables, which describe the brain activity through different aspects, can help people understand the brain function when it gets excited and researchers can interpret the physiological meaning of these parameters better. The most common functional magnetic resonance imaging techniques are BOLD and ASL fMRI, in this research, the correlation between these two methods has been studied through a simultaneous data acquisition strategy. Assessing such correlation between BOLD fMRI measures and CBF offers a link of these two to the underlying of the spontaneous brain activities. In the study, an ASL pulse sequence PICORE has been used to perform the fMRI experiment on 7 health subjects. A rapid median nerve electrical stimulation paradigm has been used to detect the activation of the brain from seven normal health right-handed human subjects. Three ROIs (SMA, S1, M1) have been selected and the data were analyzed to investigate the correlation between CBF value and BOLD signal change during brain activities. We found the CBF value rises for 5 - 6 ml/min/100g for fixed ROI and 11 - 12 ml/min/100g for non-fixed ROI and the BOLD signal change was around 0.8% for both situations. Our results shows for a fixed size ROI of each individual subject, no significant difference has been found for CBF value difference and the BOLD signal change between different runs and neither did the ratio of these two parameters (p > 0.05). When studied the activation area size for each run, we found significant difference for both CBF value difference and BOLD signal change (p
Book Synopsis Can Cerebral Blood Flow be Classically Conditioned? by : Theodore Andrew Zabel
Download or read book Can Cerebral Blood Flow be Classically Conditioned? written by Theodore Andrew Zabel and published by . This book was released on 2000 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Dynamic Changes in Heart Rate and Cerebral Blood Flow During Acute Vagal Nerve Stimulation by : Peter Hillebrand (M.S.)
Download or read book Dynamic Changes in Heart Rate and Cerebral Blood Flow During Acute Vagal Nerve Stimulation written by Peter Hillebrand (M.S.) and published by . This book was released on 2019 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt: Vagal Nerve Stimulation (VNS) has been shown to be a promising therapeutic technique in treating many neurological diseases, including epilepsy, stroke, traumatic brain injury, and migraine headache. The mechanisms by which VNS acts, however, are not fully understood but may involve changes in cerebral blood flow. The vagus nerve plays a significant role in the regulation of heart rate and cerebral blood flow that are altered during VNS. Here, the effects of acute vagal nerve stimulation using varying stimulation parameters on both heart rate and cerebral blood flow were examined. Laser Speckle Contrast Analysis (LASCA) was used to analyze the cerebral blood flow of male Long-Evans rats. In the first experiment, results showed two distinct patterns of responses to 0.8mA of stimulation whereby animals either experienced a mild or severe decrease in heart rate. Further, animals that displayed mild heart rate decreases showed an increase in cerebral blood flow that persisted beyond VNS. Animals that displayed severe decreases showed a transient decrease in cerebral blood flow followed by an increase that was greater than that observed in mild animals but progressively decreased after VNS. The results suggest two distinct patterns of changes in both heart rate and blood flow that may be related to the intensity of VNS. To investigate the effects of lower levels of stimulation, an additional group of animals were stimulated at 0.4mA. The results showed moderate changes in heart rate but no significant changes in cerebral blood flow in these animals. The results demonstrate that VNS alters both heart rate and cerebral blood flow and that these effects are dependent on current intensity.
Book Synopsis A Comparative Study of the Effect of Cervical Sympathetic Stimulation on Cerebral Blood Flow by :
Download or read book A Comparative Study of the Effect of Cervical Sympathetic Stimulation on Cerebral Blood Flow written by and published by . This book was released on 1964 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Brain's Vessels Diameter and Regional Cerebral Blood Flow Following Stimulation of the Spheno-palatine Ganglion by : Haviv Levi
Download or read book Brain's Vessels Diameter and Regional Cerebral Blood Flow Following Stimulation of the Spheno-palatine Ganglion written by Haviv Levi and published by . This book was released on 2010 with total page 82 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Advances in Cerebral Blood Flow by : Korte Nils
Download or read book Advances in Cerebral Blood Flow written by Korte Nils and published by . This book was released on 2021-12-24 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Quantification of Brain Function Using PET by :
Download or read book Quantification of Brain Function Using PET written by and published by Elsevier. This book was released on 1996-07-17 with total page 481 pages. Available in PDF, EPUB and Kindle. Book excerpt: Functional imaging of the brain is one of the most rapidly advancing areas of neuroscience and Positron Emission Tomography (PET) plays a major role in this progress. This book provides a comprehensive overview of the current status of PET and state-of-the-art neuroimaging. It is comprised of summaries of the presentations by experts in the field. Topics covered include radiotracer selection, advances in instrumentation, image reconstruction and data analysis, and statistical mapping of brain activity. This book focuses on the accuracy of the functional image and the strategies for addressing clinical, scientific, and diagnostic questions.Covers the PET imaging process from tracer selection to analysis and interpretationContains 79 concise reports with abundant illustrationsThe definitive state-of-the-art book for functional neuroscience with PET
Book Synopsis A comparative Study of the effect of cervical sympathetic stimulation on cerebral blood flow by : John Krog
Download or read book A comparative Study of the effect of cervical sympathetic stimulation on cerebral blood flow written by John Krog and published by . This book was released on 1964 with total page 75 pages. Available in PDF, EPUB and Kindle. Book excerpt:
