Volume 33 #2

Contents

1. Computation of eye optics of the cetacean’s eye
2. Neurophysiological mechanisms of two sequential orientations comparison in working memory
3. Contribution of the marginal peripheral retina to color constancy: Evidence obtained due to contact lens with implanted occluder
4. Contribution of the spectral and temporal mechanisms to analysis of complex sound signals
5. Role of the donor of NO molecules in regulation of primary sensory neuron responses
6. Identity documents forgery detection with mobile devices
7. Transient processes of visual evoked potentials in the tasks of human-computer interfaces
8. Algebraic reconstruction in case of limited GPU memory in the task of computed tomography
9. New criteria for neural network encoder learning in the string segmentation problem

Based on anatomical measurements of refractive structures in eyes, the positions of focused images were computed for a few cetacean species in air and water media. In air, for paraxial light rays, the cetacean eye features myopia (the focused image appears in front of the retina); in water, the eye is emmetropic (the focused image appears at the retina). For light rays projected through peripheral parts of the cornea and pupil, the eye is emmetroipic both in air and water.

Key words: vision, cetaceans, eye optics

DOI: 10.1134/S0235009219020033

References:

• Dawson W.W. The cetacean eye. Cetacean Behavior: Mechanisms and Functions. Ed.L.M. Herman. New York: Wiley. 1980. P. 53–100.
• Dawson W.W., Adams C.K., Barris M.C., Litzkow C.A. Static and kinetic properties of the dolphin pupil. Am. J. Physiol. 1979. V. 237. R301–R305.
• Dawson W.W., Brindford L.A., Perez J.M. Gross anatomy and optics of the dolphin eye (Tursiops truncatus). Cetology. 1972. V. 10. P. 1–12.
• Dawson W.W., Schroeder J.P., Sharpe S.N. Corneal surface properties of two marine mammal species. Marine Mammal Sci. 1987. V. 3. P. 186–197.
• Dral A.D.G. Ophthalmoscopical observations on the amazon dolphin, Inia geiffrensis. Aquatic Mammals. 1981. V. 8 (2). P. 40.
• Gentry R.L., Peterson R.S. Underwater vision of the sea otter. Nature. 1967. V. 16. P. 435–436.
• Hanke F.D., Dehnhardt G. Aerial visual acuity in harbor seals (Phoca vitulina) as a function of
• Hanke F.D., Dehnhardt G. Aerial visual acuity in harbor seals (Phoca vitulina) as a function of luminance. J comp Physiol A. 2009. V. 195. P. 643–650.
• Hanke F.D., Dehnhardt G., Schaeffel F., Hanke W. Corneal topography, refractive state, and accommodation inharbor seals (Phoca vitulina). Vision Res. 2006 V. 46. P. 837–847.
• Hanke F.D., Hanke W., Scholtyssek C., Dehnhardt G. Basic mechanisms in pinniped vision. Exp Brain Res. 2009. V. 199. P. 299–311.
• Hartridge H., Yamada K. Accommodation and other optical properties of the eye of the cat. Brit. J. Ophthal. 1922. V. 6. P. 481–492.
• Herman L.M., Peacock M.F., Yunker M.P., Madsen C.J. Bottlenosed dolphin: double-splitpupil yields equivalent aerial and underwater diurnal acuity. Science 1975. V. 189. P. 650–652.
• Hughes A. A useful table of reduced schematic eyes for vertebrates which includes computed longitudinal chromatic aberrations. Vision Res. 1979. V. 19. P. 1273–1275.
• Kröger R.H.H., Kirschfeld K. The cornea as an optical element in the cetacean eye. In: Marine Mammal Sensory Systems eds. J.A. Thomas, R.A. Kastelein, A.Ya. Supin, New York: Plenum, 1992. P. 97–106.
• Kröger R.H.H, Kirschfeld K. Optics of the harbor porpoise eye in water. J Opt Soc Am. 1993. V. 10. P. 1481–1489.
• Kroger R.H.H., Kirschfeld K. Refractive index in the cornea of a harbor porpoise (Phocoena phocoena) measured by two-wavelengths laser interferometry. Aquatic Mammals 1994. V. 20. P. 99–107.
• Madsen C.J., Herman L.M. Social ecological correlates of cetacean vision and visual appearance. In: Cetacean behavior: Mechanisms and functions. Ed. Herman L.M. Willey. New York. Interscience, 1980. P. 101–147.
• Mass A.M. Retinal topography in the walrus (Odobenus rosmarus divergence) and fur seal (Callorhinus ursinus) Marine Mammal Sensory Systems. Eds. J.A Thomas, R.A. Kastelein, A.Ya. Supin, New York. Plenum, 1992. P. 119–135.
• Mass A.M., Supin A.Ya. Distribution of ganglion cells in the retina of an Amazon river dolphin Inia geoffrensis. Aquatic Mammals. 1989. V. 15. P. 49–56.
• Mass A.M., Supin A.Ya. Ganglion cell density and retinal resolution in the sea otter, Enhydra lutris. Brain Behav. Evol. 2000. V. 55. P. 111–119.
• Mass A.M., Supin A.Ya. Retinal topography of the harp seal (Pagophilus groenlandicus). Brain Behav. Evol. 2003. V. 62. P. 212–222.
• Mass A.M., Supin A.Ya. Adaptive features of aquatic mammal’s eye. Anat. Rec. 2007. V. 290. P. 701–715.
• Mass A.M., Supin A.Ya. Retinal ganglion cell layer of the Caspian seal (Pusa caspica): topography and localization of the high resolution area. Brain Behav. Evol. 2010. V. 76. P. 144–153.
• Murphy C.J., Bellhorn R.W., Williams T., Burns M.S., Schaeffer F., Howland H.C. Refractive state, ocular anatomy, and accommodative range of the sea otter (Enhydra lutris). Vision Res. 1990. V. 30. P. 23–32.
• Schusterman R.J., Balliet R.F. Visual acuity of the harbor seal and Steller sea lion under water. Nature. 1970. V. 226. P. 563–564.
• Schusterman R.J., Barret B. Amphibious visual acuity in the Asian “clawless” otter. Nature. 1973. V. 244. P. 518–519.
• Sivak J.G., Howland H.C., West J., Weerheim J. The eye of the hooded seal, Cystophora cristata, in air and water. J comp Physiol A. 1989. V. 165. P. 771–777.
• Vakkur G.J., Bishop P.O. The scematic eye in the cat. Vision Res. 1963. V. 3. P. 357–381.
• Vakkur G.J., Bishop P.O., Kozak W. Visual optics in the cat, including posterior nodal distance and retinal landmarks. Vision Res. 1963. V. 3. P. 289–314.
• Vojniković B., Tamajo E. Gullstrand’s Optical Schematic System of the Eye – Modified by Vojniković & Tamajo. Col. Antropol. 2013 V. 37 Suppl. 1. P. 41–45.
• Weiffen M., Möller B., Mauck B., Dehnhardt G. Effect of water turbidity on the visual acuity of harbor seals (Phoca vitulina). Vision Res. 2006. V. 46. P. 1777–1783.