Grasping partly occluded objects: effects of global stimulus information on action.

abstract：:A novel approach to the question of image segmentation is considered. Instead of relying on edge-detection mechanisms to encircle the image of an object, it is proposed that the general Gestalt-like properties of images of objects can be used. These manifest themselves as particularly simple properties at relatively c...

journal_title：Perception

authors： Watt R

更新日期：1994-01-01 00:00:00

abstract：:In the Freezing Rotation illusion a stimulus rotating with a constant velocity is perceived as stationary on the screen, when it is presented in front of a background pattern that moves with a sinusoidal velocity profile, during the phase in which stimulus and background rotate in the same direction. It has been sugge...

journal_title：Perception

authors： Wertheim AH,Paffen CL

更新日期：2009-01-01 00:00:00

abstract：:Van Tuijl's neon color effect arises in the Ehrenstein figure if a colored cross is added such as to connect the black arms across the central gap. The effect consists of a circular veil of color in the illusory area and has the same hue as the inducing cross. The neon-like coloration is uniform, or when elicited by t...

journal_title：Perception

authors： Redies C,Spillman L

更新日期：1982-01-01 00:00:00

abstract：:The rubber hand illusion (RHI) is a perceptual illusion in which one experiences an object as part of their body when synchronous visuo-tactile stimulation is applied to one's hand and the object. There are a variety of factors that can impact the occurrence of the RHI. In the present study, we demonstrate that experi...

journal_title：Perception

authors： Teaford M,Fitzpatrick J,James Smart L Jr

更新日期：2021-01-01 00:00:00

abstract：:Monocular xenon flashes were used to evoke average EEG potentials while blank, dot or grid targets were shown simmultaneously in ten dichoptic stimulus conditions, either continuously illuminated (added to the flashes, or contraocularly), or presented only by the flashes. Mean evoked-EEG-potential waveforms over repea...

journal_title：Perception

authors： Lehmann D

更新日期：1977-01-01 00:00:00

abstract：:A stereoscopic illusion is produced by manipulating the binocular disparity of the irises in stereo pairs of human faces. These stimuli elicit unnatural percepts of the irises popping out of the face or sinking in inside the head. ...

journal_title：Perception

authors： Papathomas TV,Morikawa K

更新日期：1998-01-01 00:00:00

abstract：:Two shapes of either the same or different color will seem to be in smooth apparent motion with like-colored mates, at proper conditions of flash timing and spacing. An experiment is reported in which the condition was tested for unlike-colored pairs, for example red-green alternated with green-red. The question of in...

journal_title：Perception

authors： Kolers PA,Green M

更新日期：1984-01-01 00:00:00

abstract：:When viewing a wide-angle visual display, which rotates in the frontoparallel plane around the line of sight, observers experience an illusory shift of the direction of gravity; this shift leads to an apparent tilt of the body and displaces allocentric space coordinates. In this study, subjects adjusted an indicator t...

journal_title：Perception

authors： Mast FW,Berthoz A,Kosslyn SM

更新日期：2001-01-01 00:00:00

abstract：:The travelling salesperson problem (TSP) provides a realistic and practical example of a visuo-spatial problem-solving task. In previous research, we have found that the quality of solutions produced by human participants for small TSPs compares well with solutions from a range of computer algorithms. We have proposed...

journal_title：Perception

authors： MacGregor JN,Ormerod TC,Chronicle EP

更新日期：1999-01-01 00:00:00

abstract：:A series of lines pointing towards a central region induces an illusory brightness effect that is systematically related to the angle formed by the lines and the contour of the illusory brightness. As the lines veer to become tangents the illusory brightness decreases. ...

journal_title：Perception

authors： Kennedy JM

更新日期：1978-01-01 00:00:00

abstract：:The effect of the spatial frequency (SF) of visual gratings on reaction time (RT) and temporal-order judgment (TOJ) was examined in three experiments. In experiment 1 the visual stimuli were vertical sinusoidal gratings with SFs between 2 and 8 cycles deg-1 and the comparison stimulus in the TOJ task was a 2300 Hz ton...

journal_title：Perception

authors： Tappe T,Niepel M,Neumann O

更新日期：1994-01-01 00:00:00

abstract：:Effects of sound and posture cues on veering from the straight-ahead were tested with young blind children in an unfamiliar space that lacked orienting cues. In a pre-test with a previously heard target sound, all subjects walked straight to the target. A recording device, which sampled the locomotor trajectories auto...

journal_title：Perception

authors： Millar S

更新日期：1999-01-01 00:00:00

abstract：:Surfaces possessing steep variations in depth present severe difficulties for orientationally tuned filter models of stereopsis. These difficulties are discussed in connection with a random-dot stereogram depicting a surface with steep horizontal corrugations. As expected on theoretical grounds, we find that a vertica...

journal_title：Perception

authors： Mayhew JE,Frisby JP

更新日期：1979-01-01 00:00:00

abstract：:Two experiments are reported in which the decline or decrement in the magnitude of the Brentano Müller-Lyer illusion was measured. Observers made a pre-test judgment and, after a variable intervening time period, a post-test judgment of illusion magnitude. In experiment 1, the intervening time periods were 1, 2, and 3...

journal_title：Perception

authors： Predebon J

更新日期：1998-01-01 00:00:00

abstract：:Static figurative images implying human body movements observed for shorter and longer durations affect the perception of time. This study examined whether images of static geometric shapes would affect the perception of time. Undergraduate participants observed two Optical Art paintings by Bridget Riley for 9 or 36 s...

journal_title：Perception

authors： Nather FC,Mecca FF,Bueno JL

更新日期：2013-01-01 00:00:00

abstract：:Visual images are ambiguous. Any image, or collection of images, is consistent with an infinite number of possible scenes in the world. Yet we are generally unaware of this ambiguity. During ordinary perception we are generally aware of only one, or perhaps a few of these possibilities. Human vision evidently exploits...

journal_title：Perception

authors： Albert MK,Hoffman DD

更新日期：2000-01-01 00:00:00

abstract：:Junctions, formed at the intersection of image contours, are thought to play an important and early role in vision. The interest in junctions can be attributed in part to the notion that they are local image features that are easy to detect but that nonetheless provide valuable information about important events in th...

journal_title：Perception

authors： McDermott J

更新日期：2004-01-01 00:00:00

abstract：:Since most natural surfaces are complex and vary in amplitude and spatial frequency, it might be interesting to consider gratings not in the spatial domain, but in the spatial-frequency domain. Detection thresholds for amplitude modulation (AM) and frequency modulation (FM) in sinusoidal gratings were measured for sev...

journal_title：Perception

authors： Nefs HT,Kappers AM,Koenderink JJ

更新日期：2003-01-01 00:00:00

abstract：:Because of the massive amount of incoming visual information, perception is fundamentally selective. We are aware of only a small subset of our visual input at any given moment, and a great deal of activity can occur right in front of our eyes without reaching awareness. While previous work has shown that even salient...

journal_title：Perception

authors： Mitroff SR,Scholl BJ

更新日期：2004-01-01 00:00:00

abstract：:When a random-dot screen is used as a background for Ehrenstein figures, brightness enhancement is replaced by a change of grain and structure. Dots in the illusory area appear less densely packed and may be perceived as concentrically organized. When the screen is moved with respect to the Ehrenstein figures, the ill...

journal_title：Perception

authors： Spillmann L,Redies C

更新日期：1981-01-01 00:00:00

abstract：:The perceptually bistable character of point-light walkers has been examined in three experiments. A point-light figure without explicit depth cues constitutes a perfectly ambiguous stimulus: from all viewpoints, multiple interpretations are possible concerning the depth orientation of the figure. In the first experim...

journal_title：Perception

authors： Vanrie J,Dekeyser M,Verfaillie K

更新日期：2004-01-01 00:00:00

abstract：:Numerous studies have shown that visual stimuli can bias the perceived location of auditory stimuli. Here, we sought to determine if a visual stimulus can also bias the perceived location of multiple internal auditory stimuli. Fifty subjects were presented with a train of eight binaural click-pairs over headphones whi...

journal_title：Perception

authors： Dellorso S,Schirillo J

更新日期：2010-01-01 00:00:00

abstract：:We have revealed a new role for colour vision in visual scene analysis: colour vision facilitates shadow identification. Shadows are important features of the visual scene, providing information about the shape, depth, and movement of objects. To be useful for perception, however, shadows must be distinguished from ot...

journal_title：Perception

authors： Kingdom FA,Beauce C,Hunter L

更新日期：2004-01-01 00:00:00

abstract：:How does the developing brain of the human infant solve the feature-binding problem when visual stimuli consisting of multiple colored objects are presented? A habituation--dishabituation procedure revealed that 1-month-old infants have the ability to discriminate changes in the conjunction of a familiar shape and col...

journal_title：Perception

authors： Taga G,Ikejiri T,Tachibana T,Shimojo S,Soeda A,Takeuchi K,Konishi Y

更新日期：2002-01-01 00:00:00

abstract：:Displays were presented consisting of a perspective projection of a regular square grid, made up of vertical and horizontal equally spaced white lines, that was slanted in depth. The surface was viewed monocularly, through a circular aperture. A range of slants was shown (0 degree, 10 degrees, 20 degrees, 30 degrees, ...

journal_title：Perception

authors： Tibau S,Willems B,Van den Bergh E,Wagemans J

更新日期：2001-01-01 00:00:00

abstract：:Face aftereffects can provide information on how faces are stored by the human visual system (eg Leopold et al, 2001 Nature Neuroscience 4 89-94), but few studies have used robustly represented (highly familiar) faces. In this study we investigated the influence of facial familiarity on adaptation effects. Participant...

journal_title：Perception

authors： Laurence S,Hole G

更新日期：2011-01-01 00:00:00

abstract：:Cosmetics alter social perceptions, and prior work suggests that cosmetic use may aid female intrasexual competition, making women appear more dominant to other women but more prestigious to other men. It is unclear whether these findings reflect general improvements in perceptions of traits related to women's dominan...

journal_title：Perception

authors： James EA,Jenkins S,Watkins CD

更新日期：2018-05-01 00:00:00

abstract：:Subjects listened to descriptions of familiar objects and the spatial relations between them and attempted to visualize these objects as a composite scene. The time taken to generate a composite visual image, measured from the end of the verbal description, increased dramatically and linearly with the number of object...

journal_title：Perception

authors： Beech JR,Allport DA

更新日期：1978-01-01 00:00:00

abstract：:Observing actions performed by other persons can subsequently influence our own motor behaviours. However, it is unknown whether the shadows cast by such actions can also have an impact on the observers' actions. Here we show that the mere observation of a cast shadow can influence imitative behaviours. Specifically, ...

journal_title：Perception

authors： Badets A,Toussaint L,Blandin Y,Bidet-Ildei C

更新日期：2013-01-01 00:00:00

abstract：:The influence of modality-encoding bias on the relative importance ('cognitive salience') of object shape, size, and material, with the last determined by weight and thermal variations, was examined. Experiment 1 confirmed that for these stimulus objects all five properties were very accessible haptically, as measured...

journal_title：Perception

authors： Lederman SJ,Summers C,Klatzky RL

更新日期：1996-01-01 00:00:00