Research Topics
Species | GERALD JACOBSSummaryAffiliation: University of California Country: USA Publications
Research Grants
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Detail Information
Publications
Evolution of vertebrate colour visionGerald H Jacobs
Neuroscience Research Institute and Department of Psychology, University of California, Santa Barbara 93106, USA
Clin Exp Optom 87:206-16. 2004....- Polymorphic New World monkeys with more than three M/L cone typesGerald H Jacobs
Neuroscience Research Institute and Department of Psychology, University of California, Santa Barbara 93106, USA
J Opt Soc Am A Opt Image Sci Vis 22:2072-80. 2005..The peak sensitivity values for these pigments extend across the range from 530 to 562 nm. The result is an enhanced array of potential color vision phenotypes in this species... - Visual pigments of marine carnivores: pinnipeds, polar bear, and sea otterDavid H Levenson
Scripps Institution of Oceanography, UCSD, La Jolla, CA, USA
J Comp Physiol A Neuroethol Sens Neural Behav Physiol 192:833-43. 2006..Rod photoreceptor responses for all three species were as predicted by the genetic data... 
Losses of functional opsin genes, short-wavelength cone photopigments, and color vision--a significant trend in the evolution of mammalian visionGerald H Jacobs
Department of Psychological and Brain Sciences, University of California, Santa Barbara, California 93106, USA
Vis Neurosci 30:39-53. 2013..Nocturnality thus appears to set the stage for loss of functional SWS1 opsin genes in mammals, but it cannot be the sole circumstance...- The evolution of vertebrate color visionGerald H Jacobs
Department of Psychology, University of California, Santa Barbara, California, USA
Adv Exp Med Biol 739:156-72. 2012..In this chapter I review and comment on these advances... - ERG measurements of the spectral sensitivity of common chimpanzee (Pan troglodytes)G H Jacobs
Neuroscience Research Institute, Santa Barbara, CA, USA
Vision Res 36:2587-94. 1996..Curve-fitting analyses suggest that spectral filtering may be lower in the chimpanzee lens than it is in the human lens, and that the L/M cone ratio is lower in the chimpanzee... - L and M cone proportions in polymorphic New World monkeysGerald H Jacobs
Neuroscience Research Institute and Department of Psychology, University of California, Santa Barbara, California 93106, USA
Vis Neurosci 23:365-70. 2006..At the same time, there were significant individual variations in L:M cone proportions. The genesis of this variation and its implications for seeing are discussed... - Emergence of novel color vision in mice engineered to express a human cone photopigmentGerald H Jacobs
Neuroscience Research Institute and Department of Psychology, University of California, Santa Barbara, CA 93106, USA
Science 315:1723-5. 2007..An inherent plasticity in the mammalian visual system thus permits the emergence of a new dimension of sensory experience based solely on gene-driven changes in receptor organization... - Contributions of the mouse UV photopigment to the ERG and to visionGerald H Jacobs
Neuroscience Research Institute and Department of Psychology, University of California, Santa Barbara, Santa Barbara, CA 93106, USA
Doc Ophthalmol 115:137-44. 2007.... - Primate color vision: a comparative perspectiveGerald H Jacobs
Department of Psychology, Neuroscience Research Institute, University of California, Santa Barbara, California 93106, USA
Vis Neurosci 25:619-33. 2008..This work is also yielding valuable insights into the evolution of color vision... 
Evolution of colour vision in mammalsGerald H Jacobs
Neuroscience Research Institute and Department of Psychology, University of California, Santa Barbara, CA 93106, USA
Philos Trans R Soc Lond B Biol Sci 364:2957-67. 2009..This article concerns the evolution of colour vision among the mammals, viewing that process in the context of relevant biological mechanisms, of variations in mammalian colour vision, and of the utility of colour vision...- Cone pigments in a North American marsupial, the opossum (Didelphis virginiana)Gerald H Jacobs
Department of Psychology, University of California, Santa Barbara, 93106, USA
J Comp Physiol A Neuroethol Sens Neural Behav Physiol 196:379-84. 2010..We found no evidence that such a mechanism contributes to the ERG in this marsupial... - The Verriest Lecture 2009: recent progress in understanding mammalian color visionGerald H Jacobs
Department of Psychology and Neuroscience Research Institute, University of California, Santa Barbara, CA 93106, USA
Ophthalmic Physiol Opt 30:422-34. 2010..Successes in linking opsin genes and photopigments to color vision have been key to the progress made on each of these issues... - Influence of cone pigment coexpression on spectral sensitivity and color vision in the mouseGerald H Jacobs
Neuroscience Research Institute and Department of Psychology, University of California, Santa Barbara, CA 93106 5060, USA
Vision Res 44:1615-22. 2004..Complete selective segregation of opsins into individual photoreceptors is apparently not a prerequisite for color vision... - Diurnality and cone photopigment polymorphism in strepsirrhines: examination of linkage in Lemur cattaGerald H Jacobs
Neuroscience Research Institute and Department of Psychology, University of California, Santa Barbara, California 93106, USA
Am J Phys Anthropol 122:66-72. 2003..In conjunction with earlier results, this implies that cone pigment polymorphism is unlikely to exist in this species and that, accordingly, such variation is not a consistently predictable feature of vision in diurnal strepsirrhines... - An animal model for studying cone function in retinal detachmentGerald H Jacobs
Department of Psychology, University of California, Santa Barbara 93106, USA
Doc Ophthalmol 104:119-32. 2002..Surgical reattachment produced a progressive recovery of cone-based signals. The ground squirrel seems likely to provide a useful animal model for studying the dynamics of cone function in retinal detachment and subsequent events... - Opsin gene and photopigment polymorphism in a prosimian primateGerald H Jacobs
Neuroscience Research Institute and Department of Psychology, University of California, Santa Barbara, CA 93106, USA
Vision Res 42:11-8. 2002..The distribution of these pigments among animals predicts the presence of both dichromatic and trichromatic forms of color vision... - Cone-based vision of rats for ultraviolet and visible lightsG H Jacobs
Neuroscience Research Institute and Department of Psychology, University of California, Santa Barbara 93106, USA
J Exp Biol 204:2439-46. 2001..Evidence of dichromatic color vision in the rat was subsequently obtained from tests of wavelength discrimination... - Cone pigment variations in four genera of new world monkeysGerald H Jacobs
Neuroscience Research Institute and Department of Psychology, University of California, Santa Barbara, CA 93106, USA
Vision Res 43:227-36. 2003..Across subjects a total of five different M/L cone pigments were inferred with a subset of three of these present in each species... - Visual adaptations in a diurnal rodent, Octodon degusG H Jacobs
Neuroscience Research Institute, University of California, Santa Barbara, CA 93106, USA
J Comp Physiol A Neuroethol Sens Neural Behav Physiol 189:347-61. 2003..In behavioral tests degus were shown to be able to make color discriminations between ultraviolet and visible lights... - Photopigments and colour vision in New World monkeys from the family AtelidaeG H Jacobs
Neuroscience Research Institute and Department of Psychology, University of California, Santa Barbara 93106, USA
Proc Biol Sci 268:695-702. 2001..This feature directly influences the relative numbers of dichromatic and trichromatic monkeys... - Uniformity of colour vision in Old World monkeysG H Jacobs
Neuroscience Research Institute, University of California, Santa Barbara 93106, USA
Proc Biol Sci 266:2023-8. 1999..Direct comparisons of the spectral sensitivity functions of Old World monkeys suggest there are no significant variations in the spectral positions of the cone pigments underlying the trichromatic colour vision of Old World monkeys... - Prospects for trichromatic color vision in male Cebus monkeysG H Jacobs
Neuroscience Research Institute and Department of Psychology, University of California, Santa Barbara 93106, USA
Behav Brain Res 101:109-12. 1999..An examination of the literature on Cebus. monkey photopigments and results from a replication of the discrimination experiment conducted with dichromatic human subjects cast doubt on this claim... - A perspective on color vision in platyrrhine monkeysG H Jacobs
Neuroscience Research Institute, University of California, Santa Barbara 93106, USA
Vision Res 38:3307-13. 1998..Examination of color vision, photopigments, and photopigment genes of all of these monkeys have stimulated a renewed interest in understanding the evolution of primate color vision... - Photoreceptors and photopigments in a subterranean rodent, the pocket gopher (Thomomys bottae)Gary A Williams
Neuroscience Research Institute and Department of Psychology, University of California, Santa Barbara, CA 93106, USA
J Comp Physiol A Neuroethol Sens Neural Behav Physiol 191:125-34. 2005..Rod densities are lower than those typical for nocturnal mammals... - Absence of functional short-wavelength sensitive cone pigments in hamsters (Mesocricetus)Gary A Williams
Neuroscience Research Institute and Department of Psychology, University of California, Santa Barbara, CA 93106, USA
J Comp Physiol A Neuroethol Sens Neural Behav Physiol 194:429-39. 2008..Members of this genus belong to a disparate group of mammals that have lost function of their short-wavelength sensitive cone pigments through ancestral opsin gene mutations... - Cone pigment polymorphism in New World monkeys: are all pigments created equal?Mickey P Rowe
Neuroscience Research Institute and Department of Psychology, University of California, Santa Barbara, 93106, USA
Vis Neurosci 21:217-22. 2004..In all cases, performance was best for simulated trichromacies including M/L pigments with the largest spectral separation. Thus, the inequality of opsin gene frequency in Callitrichid monkeys may reflect adaptive pressures... - Spectral properties and retinal distribution of ferret conesJack B Calderone
Neuroscience Research Institute and Department of Psychology, University of California, Santa Barbara 93106, USA
Vis Neurosci 20:11-7. 2003.... - Cone-based vision in the aging mouseGary A Williams
Neuroscience Research Institute and Department of Psychology, University of California, Santa Barbara, CA 93106, USA
Vision Res 47:2037-46. 2007..The age-related decline in Vmax seen in mice is qualitatively similar to that documented for human subjects. It is notable that Vmax, a commonly used index of ERG activity, does not predict behavioral performance in the mouse... - Naturalistic color discriminations in polymorphic platyrrhine monkeys: effects of stimulus luminance and duration examined with functional substitutionMickey P Rowe
Neuroscience Research Institute, University of California, Santa Barbara, California, USA
Vis Neurosci 24:17-23. 2007..There was limited agreement among the predictions made by these models regarding the capabilities of animals with different pigment pairs and none predicted the dependence of discrimination on changes in luminance and stimulus duration... - Rod and cone function in coneless miceGary A Williams
Neuroscience Research Institute and Department of Psychology, University of California, Santa Barbara, 93106, USA
Vis Neurosci 22:807-16. 2005..Coneless mice are able to make accurate rod-based visual discriminations at light levels well in excess of those required to reach cone threshold in wild-type mice... - Early afferent signaling in the outer plexiform layer regulates development of horizontal cell morphologyMary A Raven
Neuroscience Research Institute, University of California, Santa Barbara 93106 5060, USA
J Comp Neurol 506:745-58. 2008..Together, they suggest a complex cascade of interactions between developing cone pedicles and horizontal cell dendrites involving early spontaneous activity, dendritic attraction, ribbon assembly, and pedicle invagination... - Cone photoreceptor recovery after experimental detachment and reattachment: an immunocytochemical, morphological, and electrophysiological studyTsutomu Sakai
Neuroscience Research Institute, University of California-Santa Barbara, Santa Barbara, CA 93106-5060, USA
Invest Ophthalmol Vis Sci 44:416-25. 2003..No differences were noted in the indices of recovery of M and S cones. CONCLUSIONS: The ERG can be used to follow specifically the changes in the retina that occur after retinal detachment and reattachment... - Topography of photoreceptors and retinal ganglion cells in the spotted hyena (Crocuta crocuta)Jack B Calderone
Neuroscience Research Institute and Department of Psychology, University of California-Santa Barbara, Santa Barbara, CA 93106, USA
Brain Behav Evol 62:182-92. 2003..Using standard assumptions the maximum spatial resolution of the spotted hyena is calculated to be about 8.4 cycles/degree, a value similar to estimates obtained for other terrestrial carnivores... - Mutational changes in S-cone opsin genes common to both nocturnal and cathemeral Aotus monkeysDavid H Levenson
Center for Marine Biotechnology and Biomedicine, Scripps Institution of Oceanography, La Jolla, San Diego, California, USA
Am J Primatol 69:757-65. 2007.... - Genetically engineered mice with an additional class of cone photoreceptors: implications for the evolution of color visionPhilip M Smallwood
Department of Molecular Biology and Genetics, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
Proc Natl Acad Sci U S A 100:11706-11. 2003....
Research Grants
- WITHIN SPECIES VARIATIONS IN VISUAL CAPACITYGERALD JACOBS; Fiscal Year: 2002..Preliminary results suggest that there may be polymorphic variants leading to protanopia. ..
- WITHIN-SPECIES VARIATIONS IN VISUAL CAPACITYGERALD JACOBS; Fiscal Year: 1992..Preliminary results suggest that there may be polymorphic variants leading to protanopia...
- WITHIN-SPECIES VARIATIONS IN VISUAL CAPACITYGERALD JACOBS; Fiscal Year: 1980..Finally, a behavioral experiment on squirrel monkeys is proposed that involves an attempt to gain information as to the significance for normal behavior of this within-species variation in visual capacity...
- WITHIN-SPECIES VARIATIONS IN VISUAL CAPACITYGERALD JACOBS; Fiscal Year: 2007....