Defines cited receptor combinations that package models may use by default.
Receptors marked with a role in species_sensitivities are not
model-eligible unless they occur in this table.
Format
A data frame with 13 rows and 7 columns:
- species
Scientific name matching
species_sensitivities$species.- channel
Stable channel identifier within a species.
- channel_role
Biological role from the controlled vocabulary.
- receptor
Receptor member matching a species/receptor pair in
species_sensitivities.- weight
Finite positive channel membership weight. Chromatic JND currently uses receptor-noise weighting rather than this field.
- is_default
Whether this is the default channel for its species and role. A species can have at most one default channel per role.
- source
Literature citation supporting the receptor set.
Details
The curated set contains default chromatic channels for Homo sapiens, Danio rerio, and Apis mellifera, plus behavioural achromatic channels for adult light-adapted Danio rerio, Apis mellifera, and Drosophila melanogaster. Species with incomplete or ambiguous receptor sets are deliberately absent and therefore fail rather than falling back to every known receptor.
References
Krauss A, Neumeyer C (2003) Wavelength dependence of the optomotor response in zebrafish (Danio rerio). Vision Research 43:1275-1284. doi:10.1016/S0042-6989(03)00090-7
Niggebrugge C, Hempel de Ibarra N (2003) Colour-dependent target detection by bees. Journal of Comparative Physiology A 189:915-918. doi:10.1007/s00359-003-0466-3
Yamaguchi S, Wolf R, Desplan C, Heisenberg M (2008) Motion vision is independent of color in Drosophila. PNAS 105:4910-4915. doi:10.1073/pnas.0711484105
Examples
data(species_channels)
subset(species_channels, species == "Homo sapiens")
#> species channel channel_role receptor weight is_default
#> 1 Homo sapiens cone_opponent chromatic S-cone 1 TRUE
#> 2 Homo sapiens cone_opponent chromatic M-cone 1 TRUE
#> 3 Homo sapiens cone_opponent chromatic L-cone 1 TRUE
#> source
#> 1 Bowmaker & Dartnall 1980
#> 2 Bowmaker & Dartnall 1980
#> 3 Bowmaker & Dartnall 1980