Spatial-gradient limit on perception of multiple motion.

abstract：:Multisensory integration is a powerful mechanism for maximizing sensitivity to sensory events. We examined its effects on auditory localization in healthy human subjects. The specific objective was to test whether the relative intensity and location of a seemingly irrelevant visual stimulus would influence auditory lo...

journal_title：Perception

authors： Bolognini N,Leo F,Passamonti C,Stein BE,Làdavas E

更新日期：2007-01-01 00:00:00

abstract：:For good ecological reasons humans assume that the illumination in pictures comes from overhead rather than from below. Recent work has also raised the possibility that the preferred angle of illumination is between 20 degrees and 30 degrees to the left of vertical, although the ecological basis for that is obscure. W...

journal_title：Perception

authors： McManus IC,Buckman J,Woolley E

更新日期：2004-01-01 00:00:00

abstract：:It has often been reported that, in the absence of information about the direction of illumination, people interpret surface convexities and concavities in accordance with the assumption that illumination comes from above. However, 'above' could mean with reference to gravity, the head or the retina. Yonas et al repor...

journal_title：Perception

authors： Howard IP,Bergström SS,Ohmi M

更新日期：1990-01-01 00:00:00

abstract：:The impact that the analysis of sound waves has made on theories of light is well known, and is touched upon here. However, the acoustic figures described initially by Robert Hooke in 1665 and in more detail by Ernst Chladni in 1787 (often referred to as Chladni figures) were instrumental in vision in two specific res...

journal_title：Perception

authors： Wade NJ

更新日期：2005-01-01 00:00:00

abstract：:The effect of contrast on the perception of stimulus speed for stereomotion and monocular lateral motion was investigated for successive matches in random-dot stimuli. The familiar 'Thompson effect'--that a reduction in contrast leads to a reduction in perceived speed--was found in similar proportions for both binocul...

journal_title：Perception

authors： Brooks K

更新日期：2001-01-01 00:00:00

abstract：:The transfer of learning between normal and monocularly-transformed small-disparity, random-dot stereostimuli has been examined under extended viewing conditions. When the disparity value was constant, transfer of learning between normal and monocularly-transformed stereostimuli was disrupted by both low-frequency and...

journal_title：Perception

authors： Long NR

更新日期：1982-01-01 00:00:00

abstract：:The tilt illusion (TI) was investigated by using both short (19 min) and long (2 deg 6 min) test lines, at three angles of test line-inducing line separation (15 degrees, 45 degrees, and 75 degrees). Three groups of ten observers each provided data under one of three task conditions: vertical judgment, parallel matchi...

journal_title：Perception

authors： Wenderoth P,Parkinson A,White D

更新日期：1979-01-01 00:00:00

abstract：:The earliest known explicit and unambiguous employment of representation in external media is in the form of figurative depictions of large mammals during the Upper Palaeolithic. These images, though often created with evident technical skill and intimate knowledge of the subject matter, are frequently characterised b...

journal_title：Perception

authors： Cheyne JA,Meschino L,Smilek D

更新日期：2009-01-01 00:00:00

abstract：:Prosopagnosia is a selective impairment of the visual learning and recognition of faces. The congenital type, which is not accompanied by detectable brain damage or malformation, was recently found to be far more common than previously known. Therefore, one should expect that at least a few biographies or autobiograph...

journal_title：Perception

authors： Grüter T,Grüter M

更新日期：2007-01-01 00:00:00

abstract：:Although depth is experienced with targets at large disparities when they are seen as double or diplopic, whether that depth is as direct as with fused targets has been a matter of considerable uncertainty. Researchers have often claimed that judgments of the depth of diplopic targets during simple near/far tasks rely...

journal_title：Perception

authors： Ziegler LR,Hess RF

更新日期：1997-01-01 00:00:00

abstract：:By using techniques for precision ophthalmic tinting, individuals who report perceptual distortion of text can often find a colour of illumination that eliminates the distortions and increases reading speed. Most individuals choose green or blue hues, but there is considerable variability. We investigated how specific...

journal_title：Perception

authors： Wilkins AJ,Sihra N,Myers A

更新日期：2005-01-01 00:00:00

abstract：:Attention is unequally distributed across the visual field. Due to greater right than left hemisphere activation for visuospatial attention, people attend slightly more to the left than the right side. As a result, people voluntarily remember visual stimuli better when it first appears in the left than the right visua...

journal_title：Perception

authors： Moeck EK,Thomas NA,Takarangi MKT

更新日期：2021-01-01 00:00:00

abstract：:Classical apparent motion stimuli exhibit an inherent ambiguity with respect to the onsets and offsets of the stimulus elements. Sigman and Rock (1974, Perception 3 9-28) presented evidence suggesting that occlusion cues are used to resolve this ambiguity. We present results from experiments designed to further test p...

journal_title：Perception

authors： Ekroll V,Borzikowsky C

更新日期：2010-01-01 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：:We report two experiments in which we used animated averaged faces to examine infants' ability to perceive and discriminate facial motion. The faces were generated by using the motion recorded from the faces of volunteers while they spoke. We tested infants aged 4-8 months to assess their ability to discriminate facia...

journal_title：Perception

authors： Spencer J,O'Brien J,Johnston A,Hill H

更新日期：2006-01-01 00:00:00

abstract：:Adapting to a drifting grating (temporal frequency 4 Hz, contrast 0.4) in the periphery gave rise to a motion aftereffect (MAE) when the grating was stopped. A standard unadapted foveal grating was matched to the apparent velocity of the MAE, and the matching velocity was approximately constant regardless of the visua...

journal_title：Perception

authors： Wright MJ

更新日期：1986-01-01 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：:We show a cylindrical projection of the human head. This projection is ambiguous with respect to head pose. Viewing such a projection produces perceptual competition for a few discrete views. ...

journal_title：Perception

authors： Kersten D,Troje NF,Bülthoff HH

更新日期：1996-01-01 00:00:00

abstract：:Three experiments are reported in which it is tested whether the Gestalt effect of configural orientation on shape perception operates on two-dimensional (2-D) or three-dimensional (3-D) representations of space. It is known that gravitationally defined squares and diamonds take longer to discriminate in diagonal arra...

journal_title：Perception

authors： Palmer S,Simone E,Kube P

更新日期：1988-01-01 00:00:00

abstract：:Three coins are lined up with the middle coin at room temperature and flanking coins cooled down to 4 degrees C. If digits 2 and 4 are placed on the outer coins and digit 3 on the middle coin, the latter also feels cold; a striking example of perceptual filling in of temperature. We show that if digits 2 and 4 are pla...

journal_title：Perception

authors： Seckel E,Krause B,Ramachandran VS

更新日期：2012-01-01 00:00:00

abstract：:An experiment is described in which photographs of everyday objects were masked by frequency-filtered random visual noise. The masking functions obtained were of the same type as those obtained by masking letters and words with random noise or a pattern mask. That is, the high-frequency mask produced a type A function...

journal_title：Perception

authors： Forster PM

更新日期：1982-01-01 00:00:00

abstract：:We investigated here how partly occluded stimuli affect early and late prehension kinematics. Stimuli were pictures of partly occluded cylindrical objects with indentations or protrusions at regular intervals along the contour. They diverged into two plausible completions: a local completion, comprising a linear conti...

journal_title：Perception

authors： Lommertzen J,Van Lier R,Meulenbroek RG

更新日期：2009-01-01 00:00:00

abstract：:When viewing two conflicting stimuli in a stereoscope, males reported seeing objects significantly more often than human figures. The opposite effect was observed in females. ...

journal_title：Perception

authors： McGuinness D,Symonds J

更新日期：1977-01-01 00:00:00

abstract：:A new visual illusion is presented. When two neon-coloured illusory bands overlap each other, the filling-in at the region of overlap is perceived as different from those of the overlapping bands, resulting in an additional illusory shape at the region of overlap. An experiment with ten naïve participants was performe...

journal_title：Perception

authors： von LR

更新日期：2002-01-01 00:00:00

abstract：:When the dynamic visual noise of an untuned television set is viewed with image defocusing (positive lenses) and with a narrow vertical obstruction partially blocking the pupil of one eye, the video 'snow' seems to separate into two stable surfaces at different depths, divided by a vertical discontinuity. The main fea...

journal_title：Perception

authors： Enright JT

更新日期：1984-01-01 00:00:00

abstract：:The effect of age-induced changes on face recognition were investigated as a means of exploring the role of age in the encoding of new facial memories. The ability of participants to recognise each of six previously learnt faces was tested with versions which were either identical to the learnt faces, the same age (bu...

journal_title：Perception

authors： George PA,Hole GJ

更新日期：1998-01-01 00:00:00

abstract：:Investigations of change detection consistently reveal an effect of change magnitude: changes involving more object parts are detected more easily than those involving fewer parts. Whether large changes improve detection by providing stronger preattentive signals to the change location is subject to debate. We report ...

journal_title：Perception

authors： Favelle SK,Palmisano S

更新日期：2015-01-01 00:00:00

abstract：:Orientation sensitivity in the peripheral visual field has been tested in two tasks: (a) setting horizontal the orientation of a grating at various retinal eccentricities, and (b) matching the orientation of a peripherally viewed grating as close as possible to an oblique reference viewed foveally. Both performances f...

journal_title：Perception

authors： Spinelli D,Bazzeo A,Vicario GB

更新日期：1984-01-01 00:00:00

abstract：:It is argued that the whole face is more dominant than the individual features. In the case of a jumbled face the external pattern is dominant when a face is upright, whereas the internal pattern is dominant when a face is inverted. ...

journal_title：Perception

authors： Rakover SS

更新日期：1999-01-01 00:00:00

abstract：:It has been claimed that an illusory figure is prevented from occurring when there is contrary evidence to occlusion, eg when the inducers are pictorial representations of 'complete' three-dimensional (3-D) objects. However, it was recently shown that illusory figures may also be induced by such pictorially 3-D induce...

journal_title：Perception

authors： Purghé F

更新日期：1995-01-01 00:00:00