Analyzing strange sounds during night.
Summary of "Analyzing strange sounds during night."
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Affiliation
Department of Otorhinolaryngology, Sleep Disorders Center, University Medicine Mannheim, Medical Faculty Mannheim of the Ruprecht-Karls-University Heidelberg, 68135, Mannheim, Germany, Joachim.maurer@umm.de.
Journal Details
This article was published in the following journal.
Name: Sleep & breathing = Schlaf & Atmung
ISSN: 1522-1709
Pages:
Links
- PubMed Source: http://www.ncbi.nlm.nih.gov/pubmed/20862556
- DOI: http://dx.doi.org/10.1007/s11325-010-0423-7
Medical and Biotech [MESH] Definitions
Night Blindness
Failure or imperfection of vision at night or in dim light, with good vision only on bright days. (Dorland, 27th ed)
Aotus Trivirgatus
A species in the family AOTIDAE, inhabiting the forested regions of Central and South America (from Panama to the Amazon). Vocalizations occur primarily at night when they are active, thus they are also known as Northern night monkeys.
Night Care
Institutional night care of patients.
Heart Sounds
The sounds heard over the cardiac region produced by the functioning of the heart. There are four distinct sounds: the first occurs at the beginning of SYSTOLE and is heard as a "lubb" sound; the second is produced by the closing of the AORTIC VALVE and PULMONARY VALVE and is heard as a "dupp" sound; the third is produced by vibrations of the ventricular walls when suddenly distended by the rush of blood from the HEART ATRIA; and the fourth is produced by atrial contraction and ventricular filling.
Nonlinear Dynamics
The study of systems which respond disproportionately (nonlinearly) to initial conditions or perturbing stimuli. Nonlinear systems may exhibit "chaos" which is classically characterized as sensitive dependence on initial conditions. Chaotic systems, while distinguished from more ordered periodic systems, are not random. When their behavior over time is appropriately displayed (in "phase space"), constraints are evident which are described by "strange attractors". Phase space representations of chaotic systems, or strange attractors, usually reveal fractal (FRACTALS) self-similarity across time scales. Natural, including biological, systems often display nonlinear dynamics and chaos.
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