Whether or not depth perception influences brightness and/or lightness perception has been repeatedly discussed, and some studies have emphasized its importance. In addition, a small number of ...studies have empirically tested and shown the effect of depth inversion, such as seen in the Mach card illusion, on perceived lightness, and they interpreted such results in terms of lightness constancy. However, how perceived brightness changes contingent on depth inversion remains unexplained. Therefore, this study used the matching method to examine changes in brightness perception when depth inversion is observed. We created and used a three-dimensional (3D) concave object, composed of three sides made of card stock, which could be perceived as having two different shapes in 3D; it could be perceived as a horizontal concave object, corresponding to its actual physical structure, and as a convex standing object, similar in shape to a building. Participants observed this object as both a concave object and as a convex object, and judged the brightness of its surfaces during each observation. Our results show that the perception of the brightness of the object's surfaces clearly changed depending on the perception of depth. When the object was seen as convex, one part of the surface was perceived as darker than when the object was seen as concave, but the other part of the surface remained unchanged. Here we discuss the relationship between depth perception and brightness perception in terms of perceptual organization.
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DOBA, IZUM, KILJ, NUK, PILJ, PNG, SAZU, SIK, UILJ, UKNU, UL, UM, UPUK
This article is concerned about those records which are historically related with foundation of the Japanese Psychonomic Society. The authors are concerned with the Colloquium on Perception, the ...Young Perceptionists’ Seminar (YPS) and the Chiba Seminar on Perception (CSP) as its forerunners. Attention is paid on the name of society. The Japanese Psychonomic Society has its uniqueness in that it encompasses a broad spectrum of experimental psychology, viewing perception, emotion, learning, behavior, etc. as an inseparable unity within Psychonomic science. In the paper, it also mentioned the impact of paradigm shifts that occurred in the 20th century and the subdivision of specific fields on the establishment of academic societies.
A number of studies on lightness/brightness perception have been done from several different perspectives, including those of physical factors, physiological mechanisms, and perceptual organization. ...While these studies have revealed various phenomena such as lightness/brightness contrast, assimilation, and constancy, few studies have referred to variabilities of perception, such as perceived changes of configuration when observing a Fuchs’s transparency pattern. This article defines this kind of perception as “event perception” and reviews studies of lightness/brightness perception from this viewpoint. First, we collated and analyzed a wide variety of lightness/brightness studies. Second, we identified several phenomena which could be considered event perception from these studies. Finally, we revisited lightness/brightness perception from the perspective of event perception. In conclusion, event perception is a perspective that allows us to find and explore the variability of perception. Regarding lightness and brightness perception from this perspective is useful because it provides the opportunity to identify changes in lightness/brightness and to explore the variability of perceptual attributes while an object or pattern is being observed.
A number of studies on lightness/brightness perception have been done from several different perspectives, including those of physical factors, physiological mechanisms, and perceptual organization. ...While these studies have revealed various phenomena such as lightness/brightness contrast, assimilation, and constancy, few studies have referred to variabilities of perception, such as perceived changes of configuration when observing a Fuchs’s transparency pattern. This article defines this kind of perception as “event perception” and reviews studies of lightness/brightness perception from this viewpoint. First, we collated and analyzed a wide variety of lightness/brightness studies. Second, we identified several phenomena which could be considered event perception from these studies. Finally, we revisited lightness/brightness perception from the perspective of event perception. In conclusion, event perception is a perspective that allows us to find and explore the variability of perception. Regarding lightness and brightness perception from this perspective is useful because it provides the opportunity to identify changes in lightness/brightness and to explore the variability of perceptual attributes while an object or pattern is being observed.
Murata et al. (2014) reported the wind for cutaneous sensation with vibration for vestibule could occur perceived self-motion. The authors of this study have compared perceived self-motion by ...cutaneous sensation with actual body transfer. Komatsu et al. (2015) found the occurrence of perceived self-motion was facilitated when the direction of wind was corresponded with the direction of transfer. This study investigated the condition that the wind from front and behind blew at the same time.
It was shown that the self-motion perception (i.e., vection) with cutaneous inputs was influenced by the “change” (with or without) of the wind intensity which is applied to the participants’ ...face.(Murata et al., 2015). The present study aimed to investigate whether the change of the cutaneous intensity (“approaching to” or “leaving from” the wind source) would also influence the vection. The former condition is that the source itself was moved to the participant sitting on an aero bike (which is placed on a board). The latter condition is that the source was moved away from the participant. In both conditions, the wind intensity was manipulated by continuously changing the distance from the source to the face. A constant vibration was applied to the participants via the board in such a way that the participants received simulated vestibular stimulations. The latency and duration were measured as indices of the vection. The result showed that the vection appeared to be faster in the “leaving” condition compared to the “approaching” condition.
Cutaneous stimulation (i.e., wind blowing to the participants' face) accompanied with a constant vestibular stimulus (vibration) to their body induced perceived self-motion (Murata et al., 2014). In ...the present study, the intensity of the wind was manipulated by continuously changing the distance from the source of the wind to the face. There were two experimental conditions of this manipulation: One was the condition to move the source of the wind toward the participant sitting on a chair (placed on a board), and another was to move the participant toward the source. Additionally two control-conditions without stimulus intensity changes by keeping the same distance between the source and face were used: These were the condition of moving both the source and participant on the board, and the condition of no moving but providing vibrations (that was subjectively identical to the board moving per se) to the chair. The latency, duration, and subjective rating were measured as indices of perceived self-motion. After each trial, the participants were also asked to indicate the direction and distance of perceived self-motion. The result showed that the incremental increases of stimulus intensity induced stronger self-motion perception.
Murata et al. (2014) reported the wind for cutaneous sensation with vibration for vestibule could occur perceived self-motion. This study compared active motion with passive motion in the case of ...perceived self-motion by cutaneous sensation with vestibule. As results, in active motion condition, perceived self-motion became harder to occur. But, when wind was blown to a participant, duration of perceived self-motion became longer.
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