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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/8344
Title: Functional window of the avian compass
Authors: Poonia, Vishvendra Singh
Kondabagil K.
Saha D.
Ganguly S.
Published in: Physical review. E
Abstract: The functional window is an experimentally observed property of the avian compass that refers to its selectivity around the geomagnetic-field strength. We show that the simple radical-pair model, using biologically feasible hyperfine parameters, can qualitatively explain the salient features of the avian compass as observed in behavioral experiments: its functional window, as well as disruption of the compass action by radio-frequency fields of specific frequencies. Further, we show that adjustment of the hyperfine parameters can tune the functional window, suggesting a possible mechanism for its observed adaptation to field variation. While these lend support to the radical-pair model, we find that in its simplest form-or even with minor augmentations-it cannot quantitatively explain the observed width of the functional window. This suggests deeper generalization of the model, possibly in terms of more nuclei or more subtle environmental interaction than has been considered hitherto. Finally, we examine a possible biological purpose for the functional window; even assuming evolutionary benefit from radical-pair magnetoreception, it seems likely that the functional window could be just a corollary thereof, imparting no additional advantage.
Citation: Physical review. E (2017), 95(43952): 52417-
URI: https://doi.org/10.1103/PhysRevE.95.052417
http://repository.iitr.ac.in/handle/123456789/8344
Issue Date: 2017
ISSN: 24700053
Author Scopus IDs: 56674806200
6504631937
8601668100
7102863075
Author Affiliations: Poonia, V.S., Department of Electrical Engineering, Indian Institute of Technology Bombay, Mumbai, 400076, India
Kondabagil, K., Department of Biosciences and Bioengineering, Indian Institute of Technology Bombay, Mumbai, 400076, India
Saha, D., Department of Electrical Engineering, Indian Institute of Technology Bombay, Mumbai, 400076, India
Ganguly, S., Department of Electrical Engineering, Indian Institute of Technology Bombay, Mumbai, 400076, India
Appears in Collections:Journal Publications [ECE]

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