Optimum spatiotemporal receptive fields for vision in dim light
Klaus, Andreas and Warrant, Eric LU
(2009)
In Journal of Vision
9(4).
- Abstract
- Many nocturnal insects depend on vision for daily life and have evolved different strategies to improve their visual capabilities in dim light. Neural summation of visual signals is one strategy to improve visual performance, and this is likely to be especially important for insects with apposition compound eyes. Here we develop a model to determine the optimum spatiotemporal sampling of natural scenes at gradually decreasing light levels. Image anisotropy has a strong influence on the receptive field properties predicted to be optimal at low light intensities. Spatial summation between visual channels is predicted to extend more strongly in the direction with higher correlations between the input signals. Increased spatiotemporal... (More)
- Many nocturnal insects depend on vision for daily life and have evolved different strategies to improve their visual capabilities in dim light. Neural summation of visual signals is one strategy to improve visual performance, and this is likely to be especially important for insects with apposition compound eyes. Here we develop a model to determine the optimum spatiotemporal sampling of natural scenes at gradually decreasing light levels. Image anisotropy has a strong influence on the receptive field properties predicted to be optimal at low light intensities. Spatial summation between visual channels is predicted to extend more strongly in the direction with higher correlations between the input signals. Increased spatiotemporal summation increases signal-to-noise ratio at low frequencies but sacrifices signal-to-noise ratio at higher frequencies. These results, while obtained from a model of the insect visual system, are likely to apply to visual systems in general. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/1441263
- author
- Klaus, Andreas
and Warrant, Eric
LU
- organization
- publishing date
- 2009
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- apposition compound eye, neural summation, receptive field, anisotropy, optimization, signal-to-noise ratio
- in
- Journal of Vision
- volume
- 9
- issue
- 4
- publisher
- Association for Research in Vision and Ophthalmology Inc.
- external identifiers
-
- wos:000267288000019
- scopus:65349111875
- pmid:19757927
- ISSN
- 1534-7362
- DOI
- 10.1167/9.4.18
- language
- English
- LU publication?
- yes
- id
- 131a16e6-d418-47df-b177-10cae79aeebf (old id 1441263)
- date added to LUP
- 2016-04-01 13:26:28
- date last changed
- 2022-01-27 19:14:12
@article{131a16e6-d418-47df-b177-10cae79aeebf,
abstract = {{Many nocturnal insects depend on vision for daily life and have evolved different strategies to improve their visual capabilities in dim light. Neural summation of visual signals is one strategy to improve visual performance, and this is likely to be especially important for insects with apposition compound eyes. Here we develop a model to determine the optimum spatiotemporal sampling of natural scenes at gradually decreasing light levels. Image anisotropy has a strong influence on the receptive field properties predicted to be optimal at low light intensities. Spatial summation between visual channels is predicted to extend more strongly in the direction with higher correlations between the input signals. Increased spatiotemporal summation increases signal-to-noise ratio at low frequencies but sacrifices signal-to-noise ratio at higher frequencies. These results, while obtained from a model of the insect visual system, are likely to apply to visual systems in general.}},
author = {{Klaus, Andreas and Warrant, Eric}},
issn = {{1534-7362}},
keywords = {{apposition compound eye; neural summation; receptive field; anisotropy; optimization; signal-to-noise ratio}},
language = {{eng}},
number = {{4}},
publisher = {{Association for Research in Vision and Ophthalmology Inc.}},
series = {{Journal of Vision}},
title = {{Optimum spatiotemporal receptive fields for vision in dim light}},
url = {{http://dx.doi.org/10.1167/9.4.18}},
doi = {{10.1167/9.4.18}},
volume = {{9}},
year = {{2009}},
}