1
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Jonauskaite D, Epicoco D, Al-Rasheed AS, Aruta JJBR, Bogushevskaya V, Brederoo SG, Corona V, Fomins S, Gizdic A, Griber YA, Havelka J, Hirnstein M, John G, Jopp DS, Karlsson B, Konstantinou N, Laurent É, Marquardt L, Mefoh PC, Oberfeld D, Papadatou-Pastou M, Perchtold-Stefan CM, Spagnulo GFM, Sultanova A, Tanaka T, Tengco-Pacquing MC, Uusküla M, Wąsowicz G, Mohr C. A comparative analysis of colour-emotion associations in 16-88-year-old adults from 31 countries. Br J Psychol 2024; 115:275-305. [PMID: 38041610 DOI: 10.1111/bjop.12687] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2023] [Revised: 10/03/2023] [Accepted: 10/31/2023] [Indexed: 12/03/2023]
Abstract
As people age, they tend to spend more time indoors, and the colours in their surroundings may significantly impact their mood and overall well-being. However, there is a lack of empirical evidence to provide informed guidance on colour choices, irrespective of age group. To work towards informed choices, we investigated whether the associations between colours and emotions observed in younger individuals also apply to older adults. We recruited 7393 participants, aged between 16 and 88 years and coming from 31 countries. Each participant associated 12 colour terms with 20 emotion concepts and rated the intensity of each associated emotion. Different age groups exhibited highly similar patterns of colour-emotion associations (average similarity coefficient of .97), with subtle yet meaningful age-related differences. Adolescents associated the greatest number but the least positively biased emotions with colours. Older participants associated a smaller number but more intense and more positive emotions with all colour terms, displaying a positivity effect. Age also predicted arousal and power biases, varying by colour. Findings suggest parallels in colour-emotion associations between younger and older adults, with subtle but significant age-related variations. Future studies should next assess whether colour-emotion associations reflect what people actually feel when exposed to colour.
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Affiliation(s)
- Domicele Jonauskaite
- Institute of Psychology, University of Lausanne, Lausanne, Switzerland
- Faculty of Psychology, University of Vienna, Vienna, Austria
| | - Déborah Epicoco
- Institute of Psychology, University of Lausanne, Lausanne, Switzerland
| | | | | | | | - Sanne G Brederoo
- University Center for Psychiatry, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Violeta Corona
- School of Economics and Business Administration, Universidad Panamericana, Mexico City, Mexico
- Business Management Department, Universitat Politècnica de València, Valencia, Spain
| | - Sergejs Fomins
- Department of Optometry and Vision Science, Faculty of Physics, Mathematics and Optometry, University of Latvia, Riga, Latvia
| | - Alena Gizdic
- Department of Clinical and Health Psychology, Universitat Autònoma de Barcelona, Barcelona, Spain
| | - Yulia A Griber
- Department of Sociology and Philosophy, Smolensk State University, Smolensk, Russia
| | | | - Marco Hirnstein
- Department of Biological and Medical Psychology, University of Bergen, Bergen, Norway
| | - George John
- Department of Biotechnology, Government of India (formerly), New Delhi, India
| | - Daniela S Jopp
- Institute of Psychology and LIVES Center of Competence, University of Lausanne, Lausanne, Switzerland
| | - Bodil Karlsson
- Division Built Environment, RISE Research Institutes of Sweden, Gothenburg, Sweden
| | - Nikos Konstantinou
- Department of Rehabilitation Sciences, School of Health Sciences, Cyprus University of Technology, Limassol, Cyprus
| | - Éric Laurent
- Laboratoire de recherches Intégratives en Neurosciences et psychologie Cognitive (LINC), Université de Franche-Comté, Besançon, France
| | - Lynn Marquardt
- Section for Clinical Neurophysiology, Department of Neurology, Haukeland University Hospital, Bergen, Norway
| | - Philip C Mefoh
- Department of Psychology, Faculty of the Social Sciences, University of Nigeria, Nsukka, Nigeria
| | - Daniel Oberfeld
- Institute of Psychology, Johannes Gutenberg University Mainz, Mainz, Germany
| | | | | | | | | | - Takumi Tanaka
- Graduate School of Humanities and Sociology and Faculty of Letters, The University of Tokyo, Tokyo, Japan
| | | | - Mari Uusküla
- School of Humanities, Tallinn University, Tallinn, Estonia
| | - Grażyna Wąsowicz
- Department of Economic Psychology, Kozminski University, Warsaw, Poland
| | - Christine Mohr
- Institute of Psychology, University of Lausanne, Lausanne, Switzerland
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2
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van Leeuwen JEP, McDougall A, Mylonas D, Suárez-González A, Crutch SJ, Warren JD. Pupil responses to colorfulness are selectively reduced in healthy older adults. Sci Rep 2023; 13:22139. [PMID: 38092848 PMCID: PMC10719259 DOI: 10.1038/s41598-023-48513-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2023] [Accepted: 11/27/2023] [Indexed: 12/17/2023] Open
Abstract
The alignment between visual pathway signaling and pupil dynamics offers a promising non-invasive method to further illuminate the mechanisms of human color perception. However, only limited research has been done in this area and the effects of healthy aging on pupil responses to the different color components have not been studied yet. Here we aim to address this by modelling the effects of color lightness and chroma (colorfulness) on pupil responses in young and older adults, in a closely controlled passive viewing experiment with 26 broad-spectrum digital color fields. We show that pupil responses to color lightness and chroma are independent from each other in both young and older adults. Pupil responses to color lightness levels are unaffected by healthy aging, when correcting for smaller baseline pupil sizes in older adults. Older adults exhibit weaker pupil responses to chroma increases, predominantly along the Green-Magenta axis, while relatively sparing the Blue-Yellow axis. Our findings complement behavioral studies in providing physiological evidence that colors fade with age, with implications for color-based applications and interventions both in healthy aging and later-life neurodegenerative disorders.
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Affiliation(s)
- Janneke E P van Leeuwen
- Dementia Research Centre, UCL Queen Square Institute of Neurology, University College London, 8-11 Queen Square, London, WC1N 3AR, UK.
- The Thinking Eye, ACAVA Limehouse Arts Foundation, London, UK.
| | - Amy McDougall
- Department of Medical Statistics, London School of Hygiene & Tropical Medicine, London, UK
| | - Dimitris Mylonas
- Faculty of Philosophy, Northeastern University London, London, UK
| | - Aida Suárez-González
- Dementia Research Centre, UCL Queen Square Institute of Neurology, University College London, 8-11 Queen Square, London, WC1N 3AR, UK
| | - Sebastian J Crutch
- Dementia Research Centre, UCL Queen Square Institute of Neurology, University College London, 8-11 Queen Square, London, WC1N 3AR, UK
| | - Jason D Warren
- Dementia Research Centre, UCL Queen Square Institute of Neurology, University College London, 8-11 Queen Square, London, WC1N 3AR, UK.
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3
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McKyton A, Marks Ohana D, Nahmany E, Banin E, Levin N. Seeing color following gene augmentation therapy in achromatopsia. Curr Biol 2023; 33:3489-3494.e2. [PMID: 37433300 DOI: 10.1016/j.cub.2023.06.041] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2023] [Revised: 05/18/2023] [Accepted: 06/14/2023] [Indexed: 07/13/2023]
Abstract
How will people who spent their visual lives with only rods respond to cone function restoration? Will they be able suddenly see the colors of the rainbow? CNGA3-achromatopsia is a congenital hereditary disease in which cone dysfunction leads patients to have rod photoreceptor-driven vision only in daylight,1,2,3,4 seeing the world in blurry shades of gray.5,6 We studied color perception in four CNGA3-achromatopsia patients following monocular retinal gene augmentation therapy.7,8,9 Following treatment, although some cortical changes were reported,3,4 patients did not report a dramatic change in their vision.3,9 However, in accordance with the fact that sensitivity of rods and cones is most different at long wavelengths, they consistently reported seeing red objects on dark backgrounds differently than they did before surgery.3 Because clinical color assessments failed to find any indication of color vision, we conducted a gamut of tailored tests to better define patients' descriptions. We evaluated patients' perceived lightness of different colors, color detection, and saliency, comparing their treated with their untreated eyes. Although the perceived lightness of different colors was generally similar between the eyes and matched a rod-input model, patients could detect a colored stimulus only in their treated eyes. In a search task, long response times, which were further extended with array size, suggested low saliency. We suggest that treated CNGA3-achromatopsia patients can perceive a stimulus's color attribute, although in a manner that is different and very limited compared with sighted individuals. We discuss the retinal and cortical obstacles that might explain this perceptual gap.
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Affiliation(s)
- Ayelet McKyton
- fMRI Unit, Department of Neurology, Hadassah Medical Organization and Faculty of Medicine, Hebrew University of Jerusalem, Jerusalem 91120, Israel
| | - Devora Marks Ohana
- Center for Retinal and Macular Degenerations (CRMD), Department of Ophthalmology, Hadassah Medical Organization and Faculty of Medicine, Hebrew University of Jerusalem, Jerusalem 91120, Israel
| | - Einav Nahmany
- Center for Retinal and Macular Degenerations (CRMD), Department of Ophthalmology, Hadassah Medical Organization and Faculty of Medicine, Hebrew University of Jerusalem, Jerusalem 91120, Israel
| | - Eyal Banin
- Center for Retinal and Macular Degenerations (CRMD), Department of Ophthalmology, Hadassah Medical Organization and Faculty of Medicine, Hebrew University of Jerusalem, Jerusalem 91120, Israel
| | - Netta Levin
- fMRI Unit, Department of Neurology, Hadassah Medical Organization and Faculty of Medicine, Hebrew University of Jerusalem, Jerusalem 91120, Israel.
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4
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Vanston JE, Boehm AE, Tuten WS, Roorda A. It's not easy seeing green: The veridical perception of small spots. J Vis 2023; 23:2. [PMID: 37133838 PMCID: PMC10166115 DOI: 10.1167/jov.23.5.2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2022] [Accepted: 03/26/2023] [Indexed: 05/04/2023] Open
Abstract
When single cones are stimulated with spots of 543-nm light presented against a white background, subjects report percepts that vary between predominately red, white, and green. However, light of the same spectral composition viewed over a large field under normal viewing conditions looks invariably green and highly saturated. It remains unknown what stimulus parameters are most important for governing the color appearance in the transition between these two extreme cases. The current study varied the size, intensity and retinal motion of stimuli presented in an adaptive optics scanning laser ophthalmoscope. Stimuli were either stabilized on target locations or allowed to drift across the retina with the eye's natural motion. Increasing both stimulus size and intensity led to higher likelihoods that monochromatic spots of light were perceived as green, whereas only higher intensities led to increases in perceived saturation. The data also show an interaction between size and intensity, suggesting that the balance between magnocellular and parvocellular activation may be critical factors for color perception. Surprisingly, under the range of conditions tested, color appearance did not depend on whether stimuli were stabilized. Sequential activation of many cones does not appear to drive hue and saturation perception as effectively as simultaneous activation of many cones.
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Affiliation(s)
- John Erik Vanston
- Herbert Wertheim School of Optometry and Vision Science, University of California, Berkeley, CA, USA
| | - Alexandra E Boehm
- Herbert Wertheim School of Optometry and Vision Science, University of California, Berkeley, CA, USA
| | - William S Tuten
- Herbert Wertheim School of Optometry and Vision Science, University of California, Berkeley, CA, USA
| | - Austin Roorda
- Herbert Wertheim School of Optometry and Vision Science, University of California, Berkeley, CA, USA
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5
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Rezeanu D, Neitz M, Neitz J. From cones to color vision: a neurobiological model that explains the unique hues. JOURNAL OF THE OPTICAL SOCIETY OF AMERICA. A, OPTICS, IMAGE SCIENCE, AND VISION 2023; 40:A1-A8. [PMID: 37132996 PMCID: PMC11016238 DOI: 10.1364/josaa.477227] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/05/2022] [Accepted: 11/30/2022] [Indexed: 05/04/2023]
Abstract
The irreducible unique hues-red, green, blue, and yellow-remain one of the great mysteries of vision science. Attempts to create a physiologically parsimonious model that can predict the spectral locations of the unique hues all rely on at least one post hoc adjustment to produce appropriate loci for unique green and unique red, and struggle to explain the non-linearity of the Blue/Yellow system. We propose a neurobiological color vision model that overcomes these challenges by using physiological cone ratios, cone-opponent normalization to equal-energy white, and a simple adaptation mechanism to produce color-opponent mechanisms that accurately predict the spectral locations and variability of the unique hues.
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Affiliation(s)
- Dragos Rezeanu
- Graduate Program in Neuroscience, University of Washington, Seattle, WA 98109, USA
| | - Maureen Neitz
- Department of Ophthalmology, University of Washington, Seattle, WA 98109, USA
| | - Jay Neitz
- Department of Ophthalmology, University of Washington, Seattle, WA 98109, USA
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6
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Pennock IML, Racey C, Allen EJ, Wu Y, Naselaris T, Kay KN, Franklin A, Bosten JM. Color-biased regions in the ventral visual pathway are food selective. Curr Biol 2023; 33:134-146.e4. [PMID: 36574774 PMCID: PMC9976629 DOI: 10.1016/j.cub.2022.11.063] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2022] [Revised: 10/15/2022] [Accepted: 11/28/2022] [Indexed: 12/27/2022]
Abstract
Color-biased regions have been found between face- and place-selective areas in the ventral visual pathway. To investigate the function of the color-biased regions in a pathway responsible for object recognition, we analyzed the natural scenes dataset (NSD), a large 7T fMRI dataset from 8 participants who each viewed up to 30,000 trials of images of colored natural scenes over more than 30 scanning sessions. In a whole-brain analysis, we correlated the average color saturation of the images with voxel responses, revealing color-biased regions that diverge into two streams, beginning in V4 and extending medially and laterally relative to the fusiform face area in both hemispheres. We drew regions of interest (ROIs) for the two streams and found that the images for each ROI that evoked the largest responses had certain characteristics: they contained food, circular objects, warmer hues, and had higher color saturation. Further analyses showed that food images were the strongest predictor of activity in these regions, implying the existence of medial and lateral ventral food streams (VFSs). We found that color also contributed independently to voxel responses, suggesting that the medial and lateral VFSs use both color and form to represent food. Our findings illustrate how high-resolution datasets such as the NSD can be used to disentangle the multifaceted contributions of many visual features to the neural representations of natural scenes.
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Affiliation(s)
- Ian M L Pennock
- School of Psychology, University of Sussex, Falmer BN1 9QH, UK.
| | - Chris Racey
- School of Psychology, University of Sussex, Falmer BN1 9QH, UK
| | - Emily J Allen
- Center for Magnetic Resonance Research (CMRR), Department of Radiology, University of Minnesota, Minneapolis, MN 55455, USA; Department of Psychology, University of Minnesota, Minneapolis, MN 55455, USA
| | - Yihan Wu
- Center for Magnetic Resonance Research (CMRR), Department of Radiology, University of Minnesota, Minneapolis, MN 55455, USA
| | - Thomas Naselaris
- Center for Magnetic Resonance Research (CMRR), Department of Radiology, University of Minnesota, Minneapolis, MN 55455, USA
| | - Kendrick N Kay
- Center for Magnetic Resonance Research (CMRR), Department of Radiology, University of Minnesota, Minneapolis, MN 55455, USA
| | - Anna Franklin
- School of Psychology, University of Sussex, Falmer BN1 9QH, UK
| | - Jenny M Bosten
- School of Psychology, University of Sussex, Falmer BN1 9QH, UK.
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7
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Chen J, Gegenfurtner KR. Electrophysiological evidence for higher-level chromatic mechanisms in humans. J Vis 2021; 21:12. [PMID: 34357373 PMCID: PMC8354086 DOI: 10.1167/jov.21.8.12] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2020] [Accepted: 07/13/2021] [Indexed: 11/24/2022] Open
Abstract
Color vision in humans starts with three types of cones (short [S], medium [M], and long [L] wavelengths) in the retina and three retinal and subcortical cardinal mechanisms, which linearly combine cone signals into the luminance channel (L + M), the red-green channel (L - M), and the yellow-blue channel (S-(L + M)). Chromatic mechanisms at the cortical level, however, are less well characterized. The present study investigated such higher-order chromatic mechanisms by recording electroencephalograms (EEGs) on human observers in a noise masking paradigm. Observers viewed colored stimuli that consisted of a target embedded in noise. Color directions of the target and noise varied independently and systematically in an isoluminant plane of color space. The target was flickering on-off at 3 Hz, eliciting steady-state visual evoked potential (SSVEP) responses. As a result, the masking strength could be estimated from the SSVEP amplitude in the presence of 6 Hz noise. Masking was strongest (i.e. target eliciting smallest SSVEPs) when the target and noise were along the same color direction, and was weakest (i.e. target eliciting highest SSVEPs) when the target and noise were along orthogonal directions. This pattern of results was observed both when the target color varied along the cardinal and intermediate directions, which is evidence for higher-order chromatic mechanisms tuned to intermediate axes. The SSVEP result can be well predicted by a model with multiple broadly tuned chromatic mechanisms. In contrast, a model with only cardinal mechanisms failed to account for the data. These results provide strong electrophysiological evidence for multiple chromatic mechanisms in the early visual cortex of humans.
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Affiliation(s)
- Jing Chen
- School of Psychology, Shanghai University of Sport, Shanghai, China
- https://orcid.org/0000-0002-3038-1786
| | - Karl R Gegenfurtner
- Abteilung Allgemeine Psychologie and Center for Mind, Brain & Behavior, Justus-Liebig-Universität Gießen, Gießen, Germany
- https://www.allpsych.uni-giessen.de/karl/
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8
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Zlatkova MB, Racheva K, Totev T, Mihaylova M, Hristov I, Anderson RS. Resolution acuity and spatial summation of chromatic mechanisms in the peripheral retina. JOURNAL OF THE OPTICAL SOCIETY OF AMERICA. A, OPTICS, IMAGE SCIENCE, AND VISION 2021; 38:1003-1014. [PMID: 34263756 DOI: 10.1364/josaa.418073] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/18/2020] [Accepted: 05/28/2021] [Indexed: 06/13/2023]
Abstract
Green stimuli are more difficult to detect than red stimuli in the retinal periphery, as reported previously. We examined the spatial characteristics of chromatic mechanisms using stimuli, modulated from an achromatic background to each pole of the "red-green" cardinal axis in DKL space at 20 deg eccentricity. The "blue-yellow" cardinal axis was also studied for comparison. By measuring both grating discrimination at the resolution limit (resolution acuity) and spatial summation, assessed by the Michaelis-Menten function, we demonstrated a marked "red-green" asymmetry. The resolution acuity was worse and spatial summation more extended for "green" compared to "red" stimuli, while showing significant individual variations. Ricco's area was also measured, but not determined for "green" spots because of the poor small stimuli detection. These results cannot be explained by differences in L- and M-cone numerosity and/or spatial arrangement, but rather have postreceptoral origin, probably at the cortical level.
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9
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Guggiana Nilo DA, Riegler C, Hübener M, Engert F. Distributed chromatic processing at the interface between retina and brain in the larval zebrafish. Curr Biol 2021; 31:1945-1953.e5. [PMID: 33636122 DOI: 10.1016/j.cub.2021.01.088] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2020] [Revised: 12/30/2020] [Accepted: 01/25/2021] [Indexed: 02/07/2023]
Abstract
Larval zebrafish (Danio rerio) are an ideal organism for studying color vision, as their retina possesses four types of cone photoreceptors, covering most of the visible range and into the UV.1,2 Additionally, their eye and nervous systems are accessible to imaging, given that they are naturally transparent.3-5 Recent studies have found that, through a set of wavelength-range-specific horizontal, bipolar, and retinal ganglion cells (RGCs),6-9 the eye relays tetrachromatic information to several retinorecipient areas (RAs).10-13 The main RA is the optic tectum, receiving 97% of the RGC axons via the neuropil mass termed arborization field 10 (AF10).14,15 Here, we aim to understand the processing of chromatic signals at the interface between RGCs and their major brain targets. We used 2-photon calcium imaging to separately measure the responses of RGCs and neurons in the brain to four different chromatic stimuli in awake animals. We find that chromatic information is widespread throughout the brain, with a large variety of responses among RGCs, and an even greater diversity in their targets. Specific combinations of response types are enriched in specific nuclei, but there is no single color processing structure. In the main interface in this pathway, the connection between AF10 and tectum, we observe key elements of neural processing, such as enhanced signal decorrelation and improved chromatic decoding.16,17 A richer stimulus set revealed that these enhancements occur in the context of a more distributed code in tectum, facilitating chromatic signal association in this small vertebrate brain.
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Affiliation(s)
- Drago A Guggiana Nilo
- Department of Molecular and Cellular Biology, Harvard University, Cambridge, MA 02138, USA; Harvard Biophysics Graduate Program, Harvard University, Boston, MA 02115, USA; Department Synapses-Circuits-Plasticity, Max Planck Institute of Neurobiology, 81252 Martinsried, Germany.
| | - Clemens Riegler
- Department of Molecular and Cellular Biology, Harvard University, Cambridge, MA 02138, USA; Department of Neuroscience and Developmental Biology, University of Vienna, A-1090 Vienna, Austria
| | - Mark Hübener
- Department Synapses-Circuits-Plasticity, Max Planck Institute of Neurobiology, 81252 Martinsried, Germany
| | - Florian Engert
- Department of Molecular and Cellular Biology, Harvard University, Cambridge, MA 02138, USA.
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10
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Abstract
Color is a fundamental aspect of normal visual experience. This chapter provides an overview of the role of color in human behavior, a survey of current knowledge regarding the genetic, retinal, and neural mechanisms that enable color vision, and a review of inherited and acquired defects of color vision including a discussion of diagnostic tests.
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Affiliation(s)
- Joseph Carroll
- Department of Ophthalmology & Visual Sciences, Medical College of Wisconsin, Milwaukee, WI, United States.
| | - Bevil R Conway
- Laboratory of Sensorimotor Research, National Eye Institute, National Institute of Mental Health, Bethesda, MD, United States.
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11
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Isherwood ZJ, Joyce DS, Parthasarathy MK, Webster MA. Plasticity in perception: insights from color vision deficiencies. Fac Rev 2020; 9:8. [PMID: 33659940 PMCID: PMC7886061 DOI: 10.12703/b/9-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Inherited color vision deficiencies typically result from a loss or alteration of the visual photopigments absorbing light and thus impact the very first step of seeing. There is growing interest in how subsequent steps in the visual pathway might be calibrated to compensate for the altered receptor signals, with the possibility that color coding and color percepts might be less severely impacted than the receptor differences predict. These compensatory adjustments provide important insights into general questions about sensory plasticity and the sensory and cognitive processes underlying how we experience color.
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Affiliation(s)
| | - Daniel S Joyce
- Department of Psychology, University of Nevada, Reno, NV, USA
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12
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Rezende MTC, Figueiredo BGD, de Souza Bonifácio TA, Santos N, Andrade MJO. Variability of chromatic visual sensitivity: discrimination according to daily shifts. BIOL RHYTHM RES 2020. [DOI: 10.1080/09291016.2020.1837563] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Maria Thalita Cardoso Rezende
- Department of Psychology, Perception, Neurosciences and Behavior Laboratory, Federal University of Paraíba, João Pessoa, Brazil
| | | | | | - Natanael Santos
- Department of Psychology, Perception, Neurosciences and Behavior Laboratory, Federal University of Paraíba, João Pessoa, Brazil
| | - Michael Jackson Oliveirade Andrade
- Department of Psychology, Laboratory of Neuroscience, Chronobiology and Sleep Psychology, State University of Minas Gerais, Divinópolis, Brazil
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13
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Garg AK, Li P, Rashid MS, Callaway EM. Color and orientation are jointly coded and spatially organized in primate primary visual cortex. Science 2019; 364:1275-1279. [PMID: 31249057 PMCID: PMC6689325 DOI: 10.1126/science.aaw5868] [Citation(s) in RCA: 63] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2019] [Revised: 03/24/2019] [Accepted: 06/05/2019] [Indexed: 11/02/2022]
Abstract
Previous studies support the textbook model that shape and color are extracted by distinct neurons in primate primary visual cortex (V1). However, rigorous testing of this model requires sampling a larger stimulus space than previously possible. We used stable GCaMP6f expression and two-photon calcium imaging to probe a very large spatial and chromatic visual stimulus space and map functional microarchitecture of thousands of neurons with single-cell resolution. Notable proportions of V1 neurons strongly preferred equiluminant color over achromatic stimuli and were also orientation selective, indicating that orientation and color in V1 are mutually processed by overlapping circuits. Single neurons could precisely and unambiguously code for both color and orientation. Further analyses revealed systematic spatial relationships between color tuning, orientation selectivity, and cytochrome oxidase histology.
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Affiliation(s)
- Anupam K Garg
- The Salk Institute for Biological Studies, La Jolla, CA 92037, USA
- Neurosciences Graduate Program, University of California, San Diego, La Jolla, CA 92093, USA
- Medical Scientist Training Program, University of California, San Diego, La Jolla, CA 92093, USA
| | - Peichao Li
- The Salk Institute for Biological Studies, La Jolla, CA 92037, USA
| | | | - Edward M Callaway
- The Salk Institute for Biological Studies, La Jolla, CA 92037, USA.
- Neurosciences Graduate Program, University of California, San Diego, La Jolla, CA 92093, USA
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14
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Vasas V, Peng F, MaBouDi H, Chittka L. Randomly weighted receptor inputs can explain the large diversity of colour-coding neurons in the bee visual system. Sci Rep 2019; 9:8330. [PMID: 31171814 PMCID: PMC6554269 DOI: 10.1038/s41598-019-44375-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2018] [Accepted: 05/10/2019] [Indexed: 01/03/2023] Open
Abstract
True colour vision requires comparing the responses of different spectral classes of photoreceptors. In insects, there is a wealth of data available on the physiology of photoreceptors and on colour-dependent behaviour, but less is known about the neural mechanisms that link the two. The available information in bees indicates a diversity of colour opponent neurons in the visual optic ganglia that significantly exceeds that known in humans and other primates. Here, we present a simple mathematical model for colour processing in the optic lobes of bees to explore how this diversity might arise. We found that the model can reproduce the physiological spectral tuning curves of the 22 neurons that have been described so far. Moreover, the distribution of the presynaptic weights in the model suggests that colour-coding neurons are likely to be wired up to the receptor inputs randomly. The perceptual distances in our random synaptic weight model are in agreement with behavioural observations. Our results support the idea that the insect nervous system might adopt partially random wiring of neurons for colour processing.
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Affiliation(s)
- Vera Vasas
- Bee Sensory and Behavioural Ecology Lab, Department of Experimental and Biological Psychology, School of Biological and Chemical Sciences, Queen Mary University of London, London, UK
| | - Fei Peng
- Department of Psychology, School of Public Health, Southern Medical University, 1838 Guangzhou Road, Guangzhou, 510515, Guangdong, China.
| | - HaDi MaBouDi
- Bee Sensory and Behavioural Ecology Lab, Department of Experimental and Biological Psychology, School of Biological and Chemical Sciences, Queen Mary University of London, London, UK
| | - Lars Chittka
- Bee Sensory and Behavioural Ecology Lab, Department of Experimental and Biological Psychology, School of Biological and Chemical Sciences, Queen Mary University of London, London, UK.,Wissenschaftskolleg zu Berlin, Institute for Advanced Study, Wallotstrasse 19, D-14193, Berlin, Germany
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15
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Foster DH, Amano K. Hyperspectral imaging in color vision research: tutorial. JOURNAL OF THE OPTICAL SOCIETY OF AMERICA. A, OPTICS, IMAGE SCIENCE, AND VISION 2019; 36:606-627. [PMID: 31044981 DOI: 10.1364/josaa.36.000606] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/01/2018] [Accepted: 01/11/2019] [Indexed: 06/09/2023]
Abstract
This tutorial offers an introduction to terrestrial and close-range hyperspectral imaging and some of its uses in human color vision research. The main types of hyperspectral cameras are described together with procedures for image acquisition, postprocessing, and calibration for either radiance or reflectance data. Image transformations are defined for colorimetric representations, color rendering, and cone receptor and postreceptor coding. Several example applications are also presented. These include calculating the color properties of scenes, such as gamut volume and metamerism, and analyzing the utility of color in observer tasks, such as identifying surfaces under illuminant changes. The effects of noise and uncertainty are considered in both image acquisition and color vision applications.
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16
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Conway BR, Eskew RT, Martin PR, Stockman A. Editorial. Vision Res 2018; 151:1. [PMID: 30327094 DOI: 10.1016/j.visres.2018.09.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Bevil R Conway
- National Eye Institute and National Institute of Mental Health, National Institutes of Health, Bethesda, MD 20892
| | - Rhea T Eskew
- Department of Psychology, 125 Nightingale Hall, Northeastern University, Boston MA 02115, USA
| | - Paul R Martin
- Save Sight Institute and School of Medical Sciences, The University of Sydney, Sydney, New South Wales, Australia
| | - Andrew Stockman
- UCL Institute of Ophthalmology, University College London, 11-43 Bath Street, London EC1V 9EL, England
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