VISION EXPERIMENT ON CHROMA SATURATION PREFERENCE IN DIFFERENT HUES

2018 ◽  
Author(s):  
Yoshi Ohno ◽  
Youngshin Kwak ◽  
Semi Oh
Keyword(s):  
Vision Experiment

An anomaly in the response of the eye to light of short wavelengths

1977 ◽  
Vol 278 (960) ◽  
pp. 207-240 ◽  
Keyword(s):  
Field Experiment ◽  
Spectral Sensitivity ◽  
Large Range ◽  
Fusion Frequency ◽  
Long Wavelength ◽  
Human Eye ◽  
Vision Experiment ◽  
Wavelength Light

Adaptation of the human eye to long-wavelength light leaves it insensitive to short-wavelengths: a blue flash that is visible in the presence of a yellow adapting field may remain invisible for several seconds after the field has been turned off (see experiment 1 and Appendix). This ‘transient tritanopia’ occurs for a large range of adapting intensities, but is abolished if the adapting field is very bright (experiment 2). The loss of sensitivity is primarily confined to the blue-sensitive cone mechanism (experiments 2 a , 3 and 4 ; and Appendix) and can be produced by small attenuations of the adapting field (experiment 5). It occurs in both foveal and parafoveal vision (experiment 6) but is absent when adapting and test stimuli are presented to opposite eyes (experiment 7). It was found in a protanope (experiment 9 a ) and, in a modified form, in a deuteranope (experiment 9 b ). No differences in sensitivity were found for blue flashes presented in the light and dark phases of a field flickering at a rate above the fusion frequency (Appendix). The sensitivity of the blue-sensitive mechanism of the eye appears to be controlled not only by quanta absorbed by the blue receptors but also by a mechanism with a different spectral sensitivity

PERCEIVED CHROMA AND HUE CHANGES OF COLOURS AT HIGH ILLUMINANCE LEVELS DUE TO HUNT EFFECT

2021 ◽  
Author(s):  
Y. Kawashima ◽  
Y. Ohno
Keyword(s):  
The Other ◽  
Light Levels ◽  
Perception Model ◽  
Vision Experiment ◽  
Indoor Lighting

The purpose of this study is to quantify the Hunt Effect in a range from indoor lighting levels to outdoor daylight levels so that a perception model of Hunt Effect for lighting can be developed with outdoor daylight as the reference. Our previous study experimentally quantified the perceived chroma changes due to the Hunt Effect at 100 lx and 1000 lx. To extend this to light levels closer to outdoor daylight, a vision experiment was conducted at ≈1000 lx and ≈6000 lx for red, green, yellow, and blue patches. A reference patch on one side of a double booth at 1000 lx was compared to a set of 20 test patches on the other side of the booth at ≈6000 lx using haploscopic view condition. Results showed that the perceived chroma changes are much smaller and insignificant compared to the results between 100 lx and 1000 lx found in our previous study.

A colour vision experiment

1991 ◽  
Vol 26 (4) ◽  
pp. 249-254
Author(s):  
D Lovett ◽  
K Hore
Keyword(s):  
Colour Vision ◽  
Vision Experiment

The Role of Gesture as Simulated Action in Reinterpretation of Mental Imagery

2018 ◽  
Author(s):  
Kevin Leander Kamermans ◽  
Wim T. J. L. Pouw ◽  
Luisa Fassi ◽  
Asimina Aslanidou ◽  
Fred Paas ◽  
...  
Keyword(s):  
Mental Imagery ◽  
Mental Image ◽  
Causal Role ◽  
Manual Exploration ◽  
Vision Experiment

In the current confirmatory study, we conducted two experiments that examined the role of gesture in reinterpreting a mental image. In the first experiment, we observed that participants gestured more about figures they had learned through manual exploration than about figures they had learned through vision. Experiment 2 investigated whether such gestures have a causal role in affecting the quality of mental imagery by manipulating participants’ gesture activity.

Detection and Classification of Color Deficiency Before Vision Experiment

2016 ◽  
Vol 36 (6) ◽  
pp. 0633001 ◽  
Author(s):  
马瑞青 Ma Ruiqing ◽  
廖宁放 Liao Ningfang ◽  
篠森敬三 Shinomori Keizo
Keyword(s):  
Color Deficiency ◽  
Vision Experiment

scholarly journals Vestibular modulation of multisensory integration during actual and vicarious tactile stimulation

2019 ◽  
Author(s):  
Sonia Ponzo ◽  
Louise P. Kirsch ◽  
Aikaterini Fotopoulou ◽  
Paul M. Jenkinson
Keyword(s):  
Multisensory Integration ◽  
Tactile Stimulation ◽  
Sensory Modality ◽  
Sensory Information ◽  
Vestibular Stimulation ◽  
List Type ◽  
Rubber Hand ◽  
Vision Experiment ◽  
The Right ◽  
Proprioceptive Drift

AbstractBackgroundThe vestibular system has been shown to contribute to multisensory integration by balancing conflictual sensory information. It remains unclear whether such modulation of exteroceptive (e.g. vision), proprioceptive and interoceptive (e.g. affective touch) sensory sources is influenced by epistemically different aspects of tactile stimulation (i.e. felt from within vs seen, vicarious touch).ObjectiveWe aimed to i) replicate previous findings regarding the effects of galvanic stimulation of the right vestibular network (i.e. LGVS) in multisensory integration and ii) examine vestibular contributions to multisensory integration when touch is felt but not seen (and vice-versa).MethodDuring artificial vestibular stimulation (LGVS, RGVS and Sham), healthy participants (N=36, Experiment 1; N=37, Experiment 2) looked at a rubber hand while either their own unseen hand or the rubber hand were touched by affective or neutral touch.ResultsWe found that i) LGVS led to enhancement of vision over proprioception during visual only conditions (replicating our previous findings), and ii) LGVS (vs Sham) favoured proprioception over vision when touch was felt (Experiment 1), with the opposite results when touch was vicariously perceived via vision (Experiment 2), and with no difference between affective and neutral touch.ConclusionsWe showed how vestibular signals modulate the weight of each sensory modality according to the context in which they are perceived and that such modulation extends to different aspects of tactile stimulation: felt and seen touch are differentially balanced in multisensory integration according to their epistemic relevance.HighlightsLGVS increased proprioceptive drift during vision of a rubber handTouch on participant’s hand decreased proprioceptive drift during LGVSVicarious touch on the Rubber Hand increased proprioceptive drift during LGVSVestibular signals differently balance sensory sources in multisensory integration

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