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Nagai T, Kakuta K, Yamauchi Y. Luminance dependency of perceived color shift after color contrast adaptation caused by higher-order color channels. J Vis 2022; 22:8. [PMID: 35762942 PMCID: PMC9251816 DOI: 10.1167/jov.22.7.8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
Color adaptation is a phenomenon in which, after prolonged exposure to a specific color (i.e. adaptation color), the perceived color shifts to approximately the opposite color direction of the adaptation color. Color adaptation is strongly related to sensitivity changes in photoreceptors, such as von Kries adaptation and cone-opponent mechanisms. On the other hand, the perceptual contrast of colors (e.g. perceptual saturation of the red-green direction) decreases after adaptation to a stimulus with spatial and/or temporal color modulation along the color direction. This phenomenon is referred to as color contrast adaptation. Color contrast adaptation has been used to investigate the representation of colors in the visual system. In the present study, we measured color perception after color contrast adaptation to stimuli with temporal color modulations along complicated color loci in a luminance-chromaticity plane. We found that, after the observers adapted to color modulations with different chromaticities at higher, medium, and lower luminance (e.g. temporal alternations among red, green, and red, each at a different luminance level), the chromaticity corresponding to perceptual achromaticity (the achromatic point) shifted to the same color direction as the adaptation chromaticity in each test stimulus luminance. In contrast, this luminance dependence of the achromatic point shift was not observed after adaptation to color modulations with more complex luminance-chromaticity correspondences (e.g. alternating red, green, red, green, and red, at five luminance levels, respectively). In addition, the occurrence or nonoccurrence of the luminance-dependent achromatic point shift was qualitatively predicted using a noncardinal model composed of channels preferring intermediate color directions between the cardinal chromaticity and luminance axes. These results suggest that the noncardinal channels are involved in the luminance-dependent perceived color shift after adaptation.
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Affiliation(s)
- Takehiro Nagai
- Department of Information and Communications Engineering, Tokyo Institute of Technology, Midori-ku, Yokohama, Japan., https://sites.google.com/view/tokyotech-ice-nagailab-e
| | - Kana Kakuta
- Department of Informatics, Yamagata University, Yonezawa, Japan.,
| | - Yasuki Yamauchi
- Department of Informatics, Yamagata University, Yonezawa, Japan.,
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Jiang N, Li H, Chen C, Fu R, Zhang Y, Mei L. The emotional adaptation aftereffect discriminates between individuals with high and low levels of depressive symptoms. Cogn Emot 2021; 36:240-253. [PMID: 34775905 DOI: 10.1080/02699931.2021.2002822] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
The adaptation aftereffect plays a critical role in human development and survival. Existing studies have found that, compared with general individuals, individuals with learning disability, autism and dyslexia show a smaller amount of non-affective-based cognitive adaptation aftereffect. Nevertheless, it is unclear whether individuals with depression or depression tendency show similar phenomenon in the adaptation aftereffect, and whether such depression tendency occurs in the non-affective-based cognitive or emotional adaptation aftereffect. To address this question, the present study conducted two experiments. Experiments 1A and 1B used the emotional facial expression adaptation paradigm to examine whether Chinese participants showed the emotional adaptation aftereffect and whether the emotional adaptation aftereffect was influenced by physical features of faces, respectively. Experiment 2 recruited two groups of participants, with high and low depression, respectively, to examine whether they showed differences in the emotional or cognitive adaptation aftereffect. Results showed that Chinese participants showed the typical emotional adaptation aftereffect, which was not influenced by physical features of faces. More importantly, compared to the low-depression group, the high-depression group showed a smaller emotional adaptation aftereffect, but the two groups showed a similar cognitive adaptation aftereffect. These results suggest that level of depressive symptoms is associated with the emotional adaptation aftereffect.
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Affiliation(s)
- Nan Jiang
- Key Laboratory of Brain, Cognition and Education Sciences (South China Normal University), Ministry of Education, Guangzhou, People's Republic of China.,School of Psychology, South China Normal University, Guangzhou, People's Republic of China.,Center for Studies of Psychological Application, South China Normal University, Guangzhou, People's Republic of China.,Guangdong Key Laboratory of Mental Health and Cognitive Science, South China Normal University, Guangzhou, People's Republic of China
| | - Huiling Li
- Key Laboratory of Brain, Cognition and Education Sciences (South China Normal University), Ministry of Education, Guangzhou, People's Republic of China.,School of Psychology, South China Normal University, Guangzhou, People's Republic of China.,Center for Studies of Psychological Application, South China Normal University, Guangzhou, People's Republic of China.,Guangdong Key Laboratory of Mental Health and Cognitive Science, South China Normal University, Guangzhou, People's Republic of China
| | - Chuansheng Chen
- Department of Psychological Science, University of California, Irvine, CA, USA
| | - Ruilin Fu
- Key Laboratory of Brain, Cognition and Education Sciences (South China Normal University), Ministry of Education, Guangzhou, People's Republic of China.,School of Psychology, South China Normal University, Guangzhou, People's Republic of China.,Center for Studies of Psychological Application, South China Normal University, Guangzhou, People's Republic of China.,Guangdong Key Laboratory of Mental Health and Cognitive Science, South China Normal University, Guangzhou, People's Republic of China
| | - Yuzhou Zhang
- Key Laboratory of Brain, Cognition and Education Sciences (South China Normal University), Ministry of Education, Guangzhou, People's Republic of China.,School of Psychology, South China Normal University, Guangzhou, People's Republic of China.,Center for Studies of Psychological Application, South China Normal University, Guangzhou, People's Republic of China.,Guangdong Key Laboratory of Mental Health and Cognitive Science, South China Normal University, Guangzhou, People's Republic of China
| | - Leilei Mei
- Key Laboratory of Brain, Cognition and Education Sciences (South China Normal University), Ministry of Education, Guangzhou, People's Republic of China.,School of Psychology, South China Normal University, Guangzhou, People's Republic of China.,Center for Studies of Psychological Application, South China Normal University, Guangzhou, People's Republic of China.,Guangdong Key Laboratory of Mental Health and Cognitive Science, South China Normal University, Guangzhou, People's Republic of China
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Masumitsu T, Mizokami Y. Influence of naturalness of chroma and lightness contrast modulation on colorfulness adaptation in natural images. JOURNAL OF THE OPTICAL SOCIETY OF AMERICA. A, OPTICS, IMAGE SCIENCE, AND VISION 2020; 37:A294-A304. [PMID: 32400709 DOI: 10.1364/josaa.382414] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/08/2019] [Accepted: 03/26/2020] [Indexed: 06/11/2023]
Abstract
We investigated as to whether the naturalness of images modulated by a combination of chroma and lightness contrast affects the colorfulness perception. Four types of modulated images with different combinations of chroma and lightness contrast were used as adaptation stimuli. After adapting to one of the adaptation stimuli groups, observers judged the colorfulness of test images that were also modulated by the different combinations of chroma and lightness contrast. Our results showed that the combination of chroma and lightness contrast modulation affected the strength of colorfulness adaptation. The results also indicated that when adapting to images that exhibited high naturalness, the effect of colorfulness adaptation was strong. It was suggested that the naturalness of the chroma and lightness combination is an important factor for colorfulness adaptation.
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Sato T, Nagai T, Kuriki I, Nakauchi S. Dissociation of equilibrium points for color-discrimination and color-appearance mechanisms in incomplete chromatic adaptation. JOURNAL OF THE OPTICAL SOCIETY OF AMERICA. A, OPTICS, IMAGE SCIENCE, AND VISION 2016; 33:A150-A163. [PMID: 26974919 DOI: 10.1364/josaa.33.00a150] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
We compared the color-discrimination thresholds and supra-threshold color differences (STCDs) obtained in complete chromatic adaptation (gray) and incomplete chromatic adaptation (red). The color-difference profiles were examined by evaluating the perceptual distances between various color pairs using maximum likelihood difference scaling. In the gray condition, the chromaticities corresponding with the smallest threshold and the largest color difference were almost identical. In contrast, in the red condition, they were dissociated. The peaks of the sensitivity functions derived from the color-discrimination thresholds and STCDs along the L-M axis were systematically different between the adaptation conditions. These results suggest that the color signals involved in color discrimination and STCD tasks are controlled by separate mechanisms with different characteristic properties.
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Nagai T, Nakayama K, Kawashima Y, Yamauchi Y. Contrast adaptation to luminance and brightness modulations. JOURNAL OF THE OPTICAL SOCIETY OF AMERICA. A, OPTICS, IMAGE SCIENCE, AND VISION 2016; 33:A37-A44. [PMID: 26974940 DOI: 10.1364/josaa.33.000a37] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Perceptual brightness and color contrast decrease after seeing a light temporally modulating along a certain direction in a color space, a phenomenon known as contrast adaptation. We investigated whether contrast adaptation along the luminance direction arises from modulation of luminance signals or apparent brightness signals. The stimulus consisted of two circles on a gray background presented on a CRT monitor. In the adaptation phase, the luminance and chromaticity of one circle were temporally modulated, while the other circle was kept at a constant luminance and color metameric with an equal-energy white. We employed two types of temporal modulations, namely, in luminance and brightness. Chromaticity was sinusoidally modulated along the L-M axis, leading to dissociation between luminance and brightness (the Helmholtz-Kohlrausch effect). In addition, luminance modulation was minimized in the brightness modulation, while brightness modulation was minimized in the luminance modulation. In the test phase, an asymmetric matching method was used to measure the magnitude of contrast adaptation for both modulations. Our results showed that, although contrast adaptation along the luminance direction occurred for both modulations, contrast adaptation for luminance modulation was significantly stronger than that for the brightness modulation regardless of the temporal frequency of the adaptation modulation. These results suggest that luminance modulation is more influential in contrast adaptation than brightness modulation.
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Kuriki I, Sun P, Ueno K, Tanaka K, Cheng K. Hue Selectivity in Human Visual Cortex Revealed by Functional Magnetic Resonance Imaging. Cereb Cortex 2015; 25:4869-84. [PMID: 26423093 PMCID: PMC4635924 DOI: 10.1093/cercor/bhv198] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
The variability of color-selective neurons in human visual cortex is considered more diverse than cone-opponent mechanisms. We addressed this issue by deriving histograms of hue-selective voxels measured using fMRI with a novel stimulation paradigm, where the stimulus hue changed continuously. Despite the large between-subject difference in hue-selective histograms, individual voxels exhibited selectivity for intermediate hues, such as purple, cyan, and orange, in addition to those along cone-opponent axes. In order to rule the possibility out that the selectivity for intermediate hues emerged through spatial summation of activities of neurons selectively responding to cone-opponent signals, we further tested hue-selective adaptations in intermediate directions of cone-opponent axes, by measuring responses to 4 diagonal hues during concurrent adaptation to 1 of the 4 hues. The selective and unidirectional reduction in response to the adapted hue lends supports to our argument that cortical neurons respond selectively to intermediate hues.
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Affiliation(s)
- Ichiro Kuriki
- Research Institute of Electrical Communication, Tohoku University, Sendai, Japan
| | - Pei Sun
- RIKEN Brain Science Institute, Wako-shi, Japan Current Address: Department of Psychology, Tsinghua University, Beijing, China
| | | | | | - Kang Cheng
- RIKEN Brain Science Institute, Wako-shi, Japan
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Mizokami Y, Kamesaki C, Ito N, Sakaibara S, Yaguchi H. Effect of spatial structure on colorfulness adaptation for natural images. JOURNAL OF THE OPTICAL SOCIETY OF AMERICA. A, OPTICS, IMAGE SCIENCE, AND VISION 2012; 29:A118-A127. [PMID: 22330368 DOI: 10.1364/josaa.29.00a118] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
We examined whether the perception of the colorfulness of an image is influenced by the adaptation of the visual system to natural and shuffled images with different degrees of saturation. In the experiment, observers first became adapted to several images with different levels of saturation and then their colorfulness perception of a test image was measured. The results show that their perception of colorfulness was influenced by their adaptation to the saturation of images. The effect was stronger following adaptation to natural images than to images consisting of a shuffled collage of randomized color blocks, which suggests that the naturalness of the spatial structure of an image affects the strength of the effect.
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Affiliation(s)
- Yoko Mizokami
- Graduate School of Advanced Integration Science, Chiba University, 1-33 Yayoicho, Chiba 263-8522, Japan. ‐u.jp
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Duncan CS, Roth EJ, Mizokami Y, McDermott KC, Crognale MA. Contrast adaptation reveals increased organizational complexity of chromatic processing in the visual evoked potential. JOURNAL OF THE OPTICAL SOCIETY OF AMERICA. A, OPTICS, IMAGE SCIENCE, AND VISION 2012; 29:A152-A156. [PMID: 22330372 DOI: 10.1364/josaa.29.00a152] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Results from psychophysics and single-unit recordings suggest that color vision comprises multiple stages of processing. Postreceptoral channels appear to consist of both a stage of broadly tuned opponent channels that compare cone signals and a subsequent stage, which includes cells tuned to many different directions in color space. The chromatic visual evoked potential (crVEP) has demonstrated chromatic processing selective for cardinal axes of color space. However, crVEP evidence for higher-order color mechanisms is lacking. The present study aimed to assess the contribution of lower- and higher-order color mechanisms to the crVEP by using chromatic contrast adaptation. The results reveal the presence of mechanisms tuned to intermediate directions in color space in addition to those tuned to the fundamental cardinal axes.
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Affiliation(s)
- Chad S Duncan
- Department of Psychology, University of Nevada, Reno 0296, 1664 N. Virginia Street, Reno, Nevada 89557, USA.
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