| Cardiovascular rhythms in the 0.15-Hz band: common origin of identical phenomena in man and dog in the reticular formation of the brain stem? | |
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MedLine Citation:
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PMID: 15138824 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Selected examples from experiments in humans and dogs with time series of reticular neurons, respiration, arterial blood pressure and cutaneous forehead blood content fluctuations were analysed using multiscaled time-frequency distribution, post-event-scan and pointwise transinformation. We found in both experiments a "0.15-Hz rhythm" exhibiting periods of spindle waves (increasing and decreasing amplitudes), phase synchronized with respiration at 1:2 and 1:1 integer number ratios. At times of wave-epochs and n:m phase synchronization, the 0.15-Hz rhythm appeared in heart rate and arterial blood pressure. As phase synchronization of the 0.15-Hz rhythm with respiration was established at a 1:1 integer number ratio, all cardiovascular-respiratory oscillations were synchronized at 0.15 Hz. Analysis of a canine experiment supplied evidence that the emergence of the 0.15-Hz rhythm and n:m phase synchronization appears to result from a decline in the level of the general activity of the organism associated with a decline in the level of activity of reticular neurons in the lower brainstem network. These findings corroborate the notion of the 0.15-Hz rhythm as a marker of the "trophotropic mode of operation" first introduced by W.R. Hess. |
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Authors:
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Volker Perlitz; Manfred Lambertz; Birol Cotuk; Reinhard Grebe; Ralf Vandenhouten; Guido Flatten; Ernst Richard Petzold; Holger Schmid-Schönbein; Peter Langhorst |
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Publication Detail:
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Type: Comparative Study; Journal Article Date: 2004-05-12 |
Journal Detail:
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Title: Pflügers Archiv : European journal of physiology Volume: 448 ISSN: 0031-6768 ISO Abbreviation: Pflugers Arch. Publication Date: 2004 Sep |
Date Detail:
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Created Date: 2004-11-01 Completed Date: 2005-06-28 Revised Date: 2008-11-21 |
Medline Journal Info:
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Nlm Unique ID: 0154720 Medline TA: Pflugers Arch Country: Germany |
Other Details:
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Languages: eng Pagination: 579-91 Citation Subset: IM |
Affiliation:
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Psychophysiologisches Labor, Klinik für Psychosomatik und Psychotherapeutische Medizin, Medizinische Fakultät der Rheinisch-Westfälisch-Technischen Hochschule Aachen, 52057 Aachen, Germany. vmperlitz@ukaachen.de |
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| MeSH Terms | |
Descriptor/Qualifier:
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Animals Blood Pressure Cardiovascular Physiological Phenomena* Dogs Electrophysiology Female Humans Male Medulla Oblongata / physiology Microcirculation Middle Aged Neurons / physiology Periodicity* Photoplethysmography Relaxation Therapy Respiratory Physiological Phenomena* Reticular Formation / physiology* Skin / blood supply |
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