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Brightness discrimination in the harbor seal (Phoca vitulina)

Scholtyssek, Christine; Kelber, Almut LU and Dehnhardt, Guido (2008) In Vision Research 48(1). p.96-103
Abstract
The brightness discrimination ability of a mate harbor seal was investigated at an ambient illumination of 0.9 lx. The visual stimuli consisted of circular gray discs that were presented on a black background on a TFT monitor. Eight standard intensities were tested against sets of lower comparison intensities. In accordance with Weber's law we observed a constant gain of the just noticeable intensity difference with increasing intensity of the standard stimulus. The calculated Weber fraction is 0.14. This result indicates that the brightness discrimination ability of the harbor seal is comparable to that of humans.
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
brightness discrimination, harbor seal, animal psychophysics, contrast
in
Vision Research
volume
48
issue
1
pages
96 - 103
publisher
Elsevier
external identifiers
  • wos:000253511700010
  • scopus:38549134388
ISSN
1878-5646
DOI
10.1016/j.visres.2007.10.012
language
English
LU publication?
yes
id
3b6f30f5-58d2-4646-b901-791f5db73310 (old id 1193671)
date added to LUP
2008-09-09 09:27:20
date last changed
2017-01-01 05:12:27
@article{3b6f30f5-58d2-4646-b901-791f5db73310,
  abstract     = {The brightness discrimination ability of a mate harbor seal was investigated at an ambient illumination of 0.9 lx. The visual stimuli consisted of circular gray discs that were presented on a black background on a TFT monitor. Eight standard intensities were tested against sets of lower comparison intensities. In accordance with Weber's law we observed a constant gain of the just noticeable intensity difference with increasing intensity of the standard stimulus. The calculated Weber fraction is 0.14. This result indicates that the brightness discrimination ability of the harbor seal is comparable to that of humans.},
  author       = {Scholtyssek, Christine and Kelber, Almut and Dehnhardt, Guido},
  issn         = {1878-5646},
  keyword      = {brightness discrimination,harbor seal,animal psychophysics,contrast},
  language     = {eng},
  number       = {1},
  pages        = {96--103},
  publisher    = {Elsevier},
  series       = {Vision Research},
  title        = {Brightness discrimination in the harbor seal (Phoca vitulina)},
  url          = {http://dx.doi.org/10.1016/j.visres.2007.10.012},
  volume       = {48},
  year         = {2008},
}