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Keywords: threshold
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Journal Articles
J Exp Biol (2010) 213 (20): 3449–3456.
Published: 15 October 2010
...) that comprise their olfactory organs. We also calculated the olfactory thresholds and relative effectiveness of amino acid odorants for each species. The olfactory organs varied in both the number of lamellae and lamellar surface area, which may be related to their general habitat, but neither correlated...
Journal Articles
J Exp Biol (2010) 213 (9): 1536–1548.
Published: 1 May 2010
... parameters other than the received level as well as animal motivation and previous experience when assessing the impacts of anthropogenic noise on animals. © 2010. 2010 aversive roughness stress discomfort threshold noise habituation seal phocids Halichoerus grypus Phoca vitulina...
Journal Articles
J Exp Biol (2009) 212 (22): 3693–3699.
Published: 15 November 2009
...Olle Lind; Almut Kelber SUMMARY We have used behavioural tests to determine the intensity thresholds of colour vision in Bourke's parrots ( Neopsephotus bourkii ) and budgerigars ( Melopsittacus undulatus ). We have also examined the relationship between these thresholds and the optical...
Journal Articles
J Exp Biol (2006) 209 (21): 4224–4229.
Published: 1 November 2006
...Anne-Catherine Mailleux; Claire Detrain; Jean-Louis Deneubourg SUMMARY The decision for an ant forager to launch recruitment is governed by an internal response threshold. Here, we demonstrate that this threshold (the desired volume) triggering trail-laying increases under starvation...
Journal Articles
Journal Articles
J Exp Biol (2000) 203 (15): 2237–2246.
Published: 1 August 2000
... by Company of Biologists 2000 hair cell hearing auditory tuning adaptation suppression threshold spontaneous activity ion channel frog When an organism hears, sounds appear as fluctuations in the rate of action potentials occurring across a tonotopic array of axons within...
Journal Articles
J Exp Biol (1997) 200 (22): 2919–2926.
Published: 15 November 1997
... and that the voltage threshold for activation and inactivation of the channel is not determined by the total charge on S4. * Author for correspondence (e-mail: aspencer@bms.bc.ca ). 18 8 1997 ©The Company of Biologists Limited 1997 Polyorchis penicillatus Hydrozoa Shaker K + channels...
Journal Articles
J Exp Biol (1996) 199 (10): 2199–2205.
Published: 1 October 1996
... Limited 1996 Paramecium biaurelia gravitaxis gravikinesis hypergravity centrifuge microscope microgravity threshold As long ago as 1906, Jennings noted that at least some and probably many protozoa use gravity as an environmental stimulus for orientation. Some, such as Paramecium...
Journal Articles
J Exp Biol (1991) 161 (1): 43–59.
Published: 1 November 1991
...Bernd Kramer; Ivo Kaunzinger ABSTRACT Eigenmannia’s frequency and intensity discrimination thresholds were determined for a range of seven frequencies (50–1700Hz), centered on a fish’s individual discharge frequency, using a conditioned go/no-go paradigm. The threshold criterion was ‘50% correct...
Journal Articles
J Exp Biol (1985) 116 (1): 385–393.
Published: 1 May 1985
...F. E. Doujak ABSTRACT The absolute-intensity threshold of the optokinetic response in the crab Leptograpsus variegatus was measured using a moving continuous monochromatic point source. The results are compared to the photoreceptor responses of the same animal ( Doujak, 1984 ), to determine...