NDLI: 1/f fluctuations in biological systems

Content Provider	IEEE Xplore Digital Library
Author	Musha, T. Yamamoto, M.
Copyright Year	1997
Description	Author affiliation: Brain Function Lab., Teikyo Heisei Univ., Sakado, Japan (Musha, T.)
Abstract	The present author makes a review of different types of 1/f fluctuations which have been observed in various levels of biological body. Judging from these observations it seems that the biological rhythm is basically subject to 1/f fluctuations from cellular to behavioral levels. There are three possible generation mechanisms of 1/f-like rhythm fluctuations. Firstly, 1/f ionic conductance fluctuations of a cellular membrane would modulate ion current flowing into a biological cell which would modulate discharge intervals of the neuron. Secondly, a Hopfield-type of artificial neural network consisting of neurons, each of which has binary states 0 and 1 and has connections with all other neurons, show 1/f level fluctuations when random noise is given to each neuron with a proper inhibitory threshold. Thirdly, we mention the clustering Poisson process in which sequences of randomly occurring point events (clusters) overlap each other. As regards biological phenomena, we often ask "How?" and "Why?". The question of "Why?" is still unsolved. 1/f fluctuations were first found in electronic devices, and now they are ubiquitous in nature.
Starting Page	2692
Ending Page	2697
File Size	550008
Page Count	6
File Format	PDF
ISBN	0780342623
ISSN	1094687X
DOI	10.1109/IEMBS.1997.756890
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1997-10-30
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Biological systems Fluctuations Rhythm Neurons Voltage Biomembranes Biological system modeling Laboratories Conductors Atomic clocks
Content Type	Text
Resource Type	Article

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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