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Keywords: Fourier analysis
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Journal Articles
In collection:
J Exp Biol (2017) 220 (11): 1962–1974.
Published: 1 June 2017
...://www.biologists.com/user-licence-1-1/ Summary: Vertically barred patterns provide protection for prey from visual predators even when they mismatch the spatial frequency of background habitats. Visual ecology Predator–prey relationships Fourier analysis Animal behaviour Disruptive camouflage...
Includes: Supplementary data
Journal Articles
J Exp Biol (2009) 212 (5): 648–655.
Published: 1 March 2009
... with a double-pulsed call and an atypically slow pulse rate for the genus. Call recognition in this species is unusual because females require the presence of two alternating pulse amplitudes in the signal. A Fourier analysis of the stimulus-envelopes revealed that females respond only when both the first...
Journal Articles
J Exp Biol (2006) 209 (7): 1245–1250.
Published: 1 April 2006
... microscopy and Fourier analysis to compare the color and nanostructure of an amelanotic Steller's jay ( Cyanocitta stelleri Gmelin) feather with a normal blue Steller's jay feather. As a control, we also examined a white domestic chicken ( Gallus gallus Linnaeus) feather. The pale amelanotic jay feather had...
Journal Articles
J Exp Biol (2006) 209 (4): 748–765.
Published: 15 February 2006
... optic spectrophotometry, transmission electron microscopy (TEM) and 2D Fourier analysis to investigate the physical mechanisms of structural colour production in twelve lepidopteran species from four families, representing all of the previously proposed anatomical and optical classes of butterfly...
Journal Articles
J Exp Biol (2003) 206 (14): 2409–2429.
Published: 15 July 2003
...-dimensional (2-D) Fourier analysis of TEMs of the collagen arrays revealed a ring of peak spatial frequencies in the spatial variation in refractive index that are the appropriate size to make the observed ultraviolet–yellow colours by coherent scattering alone. One species, Philepitta castanea (Eurylaimidae...
Journal Articles
J Exp Biol (1985) 119 (1): 41–69.
Published: 1 November 1985
... harmonic content Fourier analysis sexual dimorphism Eigenmannia J.exp.Biol. 119,41-69(1985) 41 Printed in Great Britain © The Company of Biologists Limited 1985 JAMMING AVOIDANCE IN THE ELECTRIC FISH EIGENMANNIA: HARMONIC ANALYSIS OF SEXUALLY DIMORPHIC WAVES BY BERND KRAMER Zoological Institute...