title: [A model of color vision in trichromats and protans].
abstract: A model which explains the human vision protanopic deficiency and its biologic prototype with the absence of red-absorbing pigment (rabbit) was constructed from neuron-like elements. In behavioral experiments and by means of evoked potential technique it was shown that the rabbit's color space is characterized by a spherical four-dimensional with a reduction of red-coding area. Similar spherical four-dimensional structure of color space is characteristic for a group of protanopic human subjects. The perceptive space of another group of protanopic subjects (protanomals) is characterized by a reduction of both parts of the red-green opponent axis. These disorders are reproduced in the model either by a loss of some color-coding elements (the absence of the red-absorbing pigment as in protanops) or a shift of the spectral characteristics of the red pigment towards those of the green one (protanomals).
authors.affiliation: Lomonosov State University, Moscow.
authors.forename: E N
authors.initials: EN
authors.lastname: Sokolov
authors.forename: V B
authors.initials: VB
authors.lastname: Polianskiĭ
authors.forename: D V
authors.initials: DV
authors.lastname: Evtikhin
authors.forename: A V
authors.initials: AV
authors.lastname: Vartanov
mesh_terms: D000818:Animals; D003118:Color Perception / Q000502:physiology*; D003117:Color Vision Defects / Q000503:physiopathology*; D005074:Evoked Potentials, Visual / Q000502:physiology; D006801:Humans; D008954:Models, Biological; D011817:Rabbits; D012016:Reference Values