Background compensation revisited: Conserved phase response curves in frequency controlled homeostats with coherent feedback

Background compensation is the ability of a controlled variable to respond to an applied perturbation in an unchanged manner and independent of different but constant background signals which act in parallel to the perturbation. Background compensation occurs by 'coherent feedback' mechani...

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Bibliographic Details
Published in:PloS one 2024-09, Vol.19 (9), p.e0305804
Main Author: Ruoff, Peter
Format: Article
Language:English
Subjects:
Background noise
Biological control systems
Biology and Life Sciences
Circadian rhythm
Circadian rhythms
Compensation
Computer and Information Sciences
Control systems
Engineering and Technology
Feedback
Feedback, Physiological
Health aspects
Homeostasis
Independent variables
Kinetics
Methods
Models, Biological
Oscillators
Perturbation
Physical Sciences
Physiological aspects
Physiology
Research and Analysis Methods
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Summary:Background compensation is the ability of a controlled variable to respond to an applied perturbation in an unchanged manner and independent of different but constant background signals which act in parallel to the perturbation. Background compensation occurs by 'coherent feedback' mechanisms where additional control variables feed directly back to the controlled variable. This paper extends a previous study on background compensation to include phase responses in frequency controlled coherent feedback oscillators. While the frequency resetting amplitude in coherent feedback oscillators is found to be dependent on the inflow/outflow perturbation of the controlled variable and thereby become phase dependent, the frequency resetting itself and the corresponding phase response curves are found to be background compensated. It is speculated that this type of background compensation may be an additional way how ambient noise can be 'ignored' by organisms.
ISSN:1932-6203
1932-6203
DOI:10.1371/journal.pone.0305804