Abstract：
:How the visual brain integrates temporally dispersed information is an open question. Often, it is assumed that the visual system simply sums light over a certain period of time (e.g. Bloch's law). However, in feature fusion, information presented later dominates, suggesting complex temporal dynamics that cannot be described by simple energy summation. For example, if two verniers are presented in rapid succession at the same location, they are not perceived individually but they fuse to one single vernier. The perceived offset of the fused vernier is a combination of the offsets of the two presented verniers, with the later one dominating. Here, we show that indeed, Bloch's law does not hold across verniers in a sequence. However, changes in the luminance of a single vernier can be compensated for by changes in its duration in accordance with Bloch's law. We present a simple model to demonstrate that these findings can be explained by decaying neural activation.
journal_name
Vision Resjournal_title
Vision researchauthors
Scharnowski F,Hermens F,Herzog MHdoi
10.1016/j.visres.2007.05.004subject
Has Abstractpub_date
2007-08-01 00:00:00pages
2444-52issue
18eissn
0042-6989issn
1878-5646pii
S0042-6989(07)00211-8journal_volume
47pub_type
杂志文章相关文献
VISION RESEARCH文献大全abstract：:A variable pupil generally regulates the amount of incoming light available for image formation on the retina. However, some of the semi-aquatic snakes (North American Gartersnakes, Thamnophis) that forage in relatively low light conditions reduce the pupil aperture in response to submergence underwater at the expense...
journal_title：Vision research
pub_type： 杂志文章
doi：10.1016/j.visres.2008.01.006
更新日期：2008-07-01 00:00:00
abstract：:Reaction times (RT) to motion onset of a target grating moving at 0.4, 0.6, 0.8, 1.0 or 1.6 °/s and magnitude estimation of the same velocities were studied in the presence of the surrounding background motion which was either in the same or opposite direction. Surprisingly, we found no relative motion effect: if the ...
journal_title：Vision research
pub_type： 杂志文章
doi：10.1016/j.visres.2011.03.018
更新日期：2011-06-01 00:00:00
abstract：:Electrophysiological studies have established that lead exposure produces selective rod deficits. The present electroretinographic (ERG) and correlated calcium experiments examined whether low-level or moderate-level developmental lead exposure (peak blood lead of 19 and 59 micrograms/dl, respectively) altered dark ad...
journal_title：Vision research
pub_type： 杂志文章
doi：10.1016/0042-6989(92)90134-5
更新日期：1992-02-01 00:00:00
abstract：:A wide range of rest/stimulus cycle durations (40-360 sec) is reported to have been used by various groups for MRI neuroactivation studies of the visual cortex. In this paper we demonstrate a clear habituation-like response for longer cycle durations which results in a halving of apparent activation between cycle dura...
journal_title：Vision research
pub_type： 杂志文章
doi：10.1016/s0042-6989(97)85231-5
更新日期：1997-05-01 00:00:00
abstract：:Light-induced protein interaction as part of the process of visual transduction in arthropods with rhabdomeric photoreceptors was investigated biochemically by using crayfish retina. Two kinds of retinal buffer soluble proteins (one of 40 kDa and the other of 46 kDa) were found to bind to the irradiated rhabdomeric me...
journal_title：Vision research
pub_type： 杂志文章
doi：10.1016/0042-6989(93)90120-l
更新日期：1993-12-01 00:00:00
abstract：:If two demarcated dots are embedded in separate clusters of similar dots in off centre positions, their perceived separation is biased towards the separation between the centres of the clusters (Morgan, Hole, & Glennerster, 1990). We replicated these results and went on to determine whether a similar bias is present f...
journal_title：Vision research
pub_type： 杂志文章
doi：10.1016/j.visres.2006.02.010
更新日期：2006-08-01 00:00:00
abstract：:Previous studies have presented evidence for the existence of channels tuned to the spatial frequency (SF) of binocular disparity modulation. Bandwidths reported for masking curves were extremely narrow, possibly because of off-frequency viewing, whereby observers can best detect a signal with a channel tuned to an SF...
journal_title：Vision research
pub_type： 杂志文章
doi：10.1016/0042-6989(94)90016-7
更新日期：1994-03-01 00:00:00
abstract：:The present experiment uses a quadrature motion paradigm to investigate the motion correspondence cues used by young infants for coding the direction of motion of red/green isoluminant gratings. Three-month-old infants and adults were tested with 0.25 c/d luminance-modulated or red/green isoluminant gratings, either m...
journal_title：Vision research
pub_type： 杂志文章
doi：10.1016/s0042-6989(98)00202-8
更新日期：1999-05-01 00:00:00
abstract：:There are two possible binocular mechanisms for the detection of motion in depth. One is based on disparity changes over time and the other is based on interocular velocity differences. It has previously been shown that disparity changes over time can produce the perception of motion in depth. However, existing psycho...
journal_title：Vision research
pub_type： 杂志文章
doi：10.1016/j.visres.2005.10.025
更新日期：2006-04-01 00:00:00
abstract：:When the method of constant stimuli is used to measure heterochromatic brightness matches, the resulting matches can be strongly biased toward the center of the range of test luminances used. In the present paper, we investigate the source of this centering bias. The stimuli were 2 degrees red squares presented in a g...
journal_title：Vision research
pub_type： 杂志文章
doi：10.1016/j.visres.2005.06.019
更新日期：2005-11-01 00:00:00
abstract：:Mach bands are illusory bright and dark bands seen where a luminance plateau meets a ramp, as in half-shadows or penumbras. A tremendous amount of work has been devoted to studying the psychophysics and the potential underlying neural circuitry concerning this phenomenon. A number of theoretical models also have been ...
journal_title：Vision research
pub_type： 杂志文章,评审
doi：10.1016/0042-6989(95)00341-x
更新日期：1996-10-01 00:00:00
abstract：:The paper reports psychophysical experiments set up to study the visual cues used in texture discrimination. In particular, the special role of "textons", i.e. distinct visual features such as blobs of different size, lines at different orientation, line intersections ("crossings") and line ends ("terminators") which ...
journal_title：Vision research
pub_type： 杂志文章
doi：10.1016/0042-6989(91)90120-t
更新日期：1991-01-01 00:00:00
abstract：:To study the ability of humans to read subtle changes in facial expression, we applied reverse correlation technique to reveal visual features that mediate understanding of emotion expressed by the face. Surprising findings were that (1) the noise added to a test face image had profound effect on the facial expression...
journal_title：Vision research
pub_type： 杂志文章
doi：10.1016/j.visres.2003.11.027
更新日期：2004-01-01 00:00:00
abstract：:The role of eye-muscle potentiation in adaptation to prismatic tilt was evaluated by assessing the presence of cyclotorsion induced by prolonged wearing of tilting prisms. Fundus photographs, containing the retinal image of the test line adjusted to the subjective vertical, were obtained before and after prism viewing...
journal_title：Vision research
pub_type： 杂志文章
doi：10.1016/0042-6989(90)90103-r
更新日期：1990-01-01 00:00:00
abstract：:The mechanisms underlying the parsing of a spatial distribution of velocity vectors into two adjacent (spatially segregated) or overlapping (transparent) motion surfaces were examined using random dot kinematograms. Parsing might occur using either of two principles. Surfaces might be defined on the basis of similarit...
journal_title：Vision research
pub_type： 杂志文章
doi：10.1016/s0042-6989(00)00013-4
更新日期：2000-01-01 00:00:00
abstract：:In research on eye-movement control during reading, the importance of cognitive processes related to language comprehension relative to visuomotor aspects of saccade generation is the topic of an ongoing debate. Here we investigate various eye-movement measures during reading of randomly shuffled meaningless text as c...
journal_title：Vision research
pub_type： 杂志文章
doi：10.1016/j.visres.2010.08.005
更新日期：2010-11-23 00:00:00
abstract：:The electroretinogram (ERG) vs perfusion pressure relation was studied in anesthetized rabbits during mechanically induced changes in mean arterial pressure (MAP). After 1 hr of dark adaptation, ERGs were obtained at perfusion pressures from 10 to 95 mmHg with each pressure held for 30-60 sec, and at three levels from...
journal_title：Vision research
pub_type： 杂志文章
doi：10.1016/s0042-6989(97)00044-8
更新日期：1997-09-01 00:00:00
abstract：:We report a series of nine experiments which show that a single roll-tilted line in darkness induces changes of the orientation perceived as vertical (VPV) that are similar in magnitude and direction to those measured by Witkin and Asch (1948a) [Studies in space orientation. I. Perception of the upright with displaced...
journal_title：Vision research
pub_type： 杂志文章
doi：10.1016/j.visres.2005.01.014
更新日期：2005-07-01 00:00:00
abstract：:Prior studies indicate that postural stability under binocular viewing is not better than under monocular viewing. This was tested at the distances of 145 cm [Fox, C.R. (1990). Some visual influences on human postural equilibrium: binocular versus monocular fixation. Perception and Psychophysics, 47 (5), 409-422] and ...
journal_title：Vision research
pub_type： 杂志文章
doi：10.1016/j.visres.2006.06.018
更新日期：2006-10-01 00:00:00
abstract：:Loss of photoreceptors during retinal degeneration leads to blindness, but information can be reintroduced into the visual system using electrical stimulation of the remaining retinal neurons. Subretinal photovoltaic arrays convert pulsed illumination into pulsed electric current to stimulate the inner retinal neurons...
journal_title：Vision research
pub_type： 杂志文章
doi：10.1016/j.visres.2014.09.007
更新日期：2015-06-01 00:00:00
abstract：:Motion perception influences perceived position. It has been shown that first-order (luminance defined) motion shifts perceived position across a wide range of spatial and temporal frequencies. On the other hand, second-order (contrast defined) motion shifts perceived position over a narrow range of temporal frequenci...
journal_title：Vision research
pub_type： 杂志文章
doi：10.1016/j.visres.2008.07.001
更新日期：2008-09-01 00:00:00
abstract：:The spatial properties of horizontal cells in the tiger salamander retina were studied with intracellular electrodes. It was found that when the rod input to horizontal cells is dominant the receptive fields are smaller than those measured under conditions of strong cone activation. A possible explanation for this fin...
journal_title：Vision research
pub_type： 杂志文章
doi：10.1016/0042-6989(83)90024-x
更新日期：1983-01-01 00:00:00
abstract：:A successive asymmetric colour-matching task was used to study the changes in colour appearance of simulated Munsell samples. Colour shifts were induced with two Planckian illuminants, standard illuminant A (u'=0.256, v'=0.524) and illuminant S (u'=0.174, v'=0.392). Measurements were conducted with a 20 degrees field ...
journal_title：Vision research
pub_type： 杂志文章
doi：10.1016/j.visres.2006.03.011
更新日期：2006-10-01 00:00:00
abstract：:The 2-month-old human infant is known to be less visually sensitive than the adult by a factor of 50, if sensitivity is measured by the threshold for detecting a test light in the dark. In the present experiment, visual sensitivity of infants and adults did not differ significantly when sensitivity was measured by the...
journal_title：Vision research
pub_type： 杂志文章
doi：10.1016/0042-6989(86)90084-2
更新日期：1986-01-01 00:00:00
abstract：:We assess four common claims concerning the two-interval forced choice (2-IFC) procedure and the standard Difference Model of 2-IFC performance. The first two are (1) that it is unbiased and (2) that the structure of the 2-IFC task does not in itself alter sensitivity. The remaining two concern a claimed 2 enhancement...
journal_title：Vision research
pub_type： 杂志文章,随机对照试验
doi：10.1016/j.visres.2008.05.008
更新日期：2008-08-01 00:00:00
abstract：:A study is reported in which eye movements were recorded when observers attempted to make a saccade to a target in the presence of a nearby and visually identical distractor. It was found that saccade targeting accuracy was completely unaffected by the presence of the distractor, except in the cases where the distract...
journal_title：Vision research
pub_type： 杂志文章
doi：10.1016/j.visres.2008.07.005
更新日期：2009-06-01 00:00:00
abstract：:A visual transient due to a sudden visual change is generally considered to draw our attention to a location of interest. In a series of experiments we investigated how visual transients facilitate change detection in a scene. In line with earlier reports, we found that a transient sensation has its roots in a tempora...
journal_title：Vision research
pub_type： 杂志文章
doi：10.1016/j.visres.2004.04.005
更新日期：2004-01-01 00:00:00
abstract：:Evidence obtained using the dynamic grouping method has shown that the grouping of an object's connected surfaces has properties characteristic of a nonlinear dynamical system. When a surface's luminance changes, one of its boundaries is perceived moving across the surface. The direction of this dynamic grouping (DG) ...
journal_title：Vision research
pub_type： 杂志文章
doi：10.1016/j.visres.2015.06.006
更新日期：2016-09-01 00:00:00
abstract：:Deuteranomalous trichromacy is the most common form of inherited color-vision deficiency. A modern description of its cause is a single abnormality: the normal middle-wave cone photopigment (M) is replaced by a shifted middle-wave pigment (M) that is shared by all deuteranomalous trichromats. This explanation, however...
journal_title：Vision research
pub_type： 杂志文章
doi：10.1016/s0042-6989(96)00270-2
更新日期：1997-05-01 00:00:00
abstract：:While saccadic eye movements produce rapid shift of images of objects on the retina, the visual world is perceived as stationary (visual stability), but the precise mechanisms involved in such perception remain unclear. We investigated if visual stimuli existing before and/or after a saccade serve to preserve visual s...
journal_title：Vision research
pub_type： 杂志文章
doi：10.1016/j.visres.2006.05.013
更新日期：2006-10-01 00:00:00
