Coherent averaging technique: A tutorial review Part 2: Trigger jitter, overlapping responses and non-periodic stimulation

The cardiovascular reaction to negative pressure breathing (NPB) was studied in human subjects in the condition of 15-hour head-down tilt (-15°). Amplitude and time characteristics of tidal oscillations of physiological parameters synchronous to free and NPB breathing were measured after 14 hours in HDT. Oscillations of cardiovascular parameters were determined using the coherent averaging technique. A multiple increase in amplitude was stated during transition from free breathing to NPB, whereas variations of the other characteristics of oscillations were little affected.

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Coherent averaging technique: A tutorial review Part 1: Noise reduction and the equivalent filter

Journal of Biomedical Engineering ◽

10.1016/0141-5425(86)90026-9 ◽

1986 ◽

Vol 8 (1) ◽

pp. 24-29 ◽

Cited By ~ 97

Author(s):

O. Rompelman ◽

H.H. Ros

Keyword(s):

Noise Reduction ◽

Averaging Technique ◽

Coherent Averaging

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Electrogastrography in the dog: waveform analysis by a coherent averaging technique

Medical & Biological Engineering & Computing ◽

10.1007/bf02446407 ◽

1983 ◽

Vol 21 (1) ◽

pp. 56-64 ◽

Cited By ~ 10

Author(s):

A. C. W. Volkers ◽

E. J. van der Schee ◽

J. L. Grashuis

Keyword(s):

Waveform Analysis ◽

Averaging Technique ◽

Coherent Averaging

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A coherent averaging technique for resolving directional wave spectra

Proceedings of OCEANS '93 ◽

10.1109/oceans.1993.326088 ◽

2002 ◽

Author(s):

I.J. Booth ◽

M.V. Trevorrow

Keyword(s):

Wave Spectra ◽

Averaging Technique ◽

Coherent Averaging ◽

Directional Wave

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Performance degradation of the coherent averaging technique by a molding effect

IEEE Transactions on Biomedical Engineering ◽

10.1109/10.30812 ◽

1989 ◽

Vol 36 (8) ◽

pp. 856-858 ◽

Cited By ~ 13

Author(s):

F. Lippens ◽

P. Savard ◽

M. Shenasa

Keyword(s):

Performance Degradation ◽

Averaging Technique ◽

Coherent Averaging

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Reconfigurable hardware implementation of coherent averaging technique for ultrasonic NDT instruments

Ultrasonics ◽

10.1016/j.ultras.2020.106106 ◽

2020 ◽

Vol 105 ◽

pp. 106106

Author(s):

Eaglekumar G. Tarpara ◽

V.H. Patankar

Keyword(s):

Hardware Implementation ◽

Reconfigurable Hardware ◽

Averaging Technique ◽

Coherent Averaging ◽

Ultrasonic Ndt

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Entrainment and Annihilation of Reentrant Excitation in a Periodically Stimulated Ring of Excitable Media

Methods of Information in Medicine ◽

10.1055/s-0038-1636861 ◽

1997 ◽

Vol 36 (04/05) ◽

pp. 290-293

Author(s):

L. Glass ◽

T. Nomura

Keyword(s):

Cardiac Arrhythmias ◽

Initial Phase ◽

Human Heart ◽

Periodic Wave ◽

Excitable Media ◽

One Dimensional ◽

Clinical Observations ◽

Periodic Stimulation ◽

Reentrant Excitation ◽

Stimulation Of

Abstract:Excitable media, such as nerve, heart and the Belousov-Zhabo- tinsky reaction, exhibit a large excursion from equilibrium in response to a small but finite perturbation. Assuming a one-dimensional ring geometry of sufficient length, excitable media support a periodic wave of circulation. As in the periodic stimulation of oscillations in ordinary differential equations, the effects of periodic stimuli of the periodically circulating wave can be described by a one-dimensional Poincaré map. Depending on the period and intensity of the stimulus as well as its initial phase, either entrainment or termination of the original circulating wave is observed. These phenomena are directly related to clinical observations concerning periodic stimulation of a class of cardiac arrhythmias caused by reentrant wave propagation in the human heart.

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