Abstract：
:Flanking lateral masks enhance or weaken the detection of a low-contrast visual target. This effect depends on the target-to-mask distance. An improvement of stimulus detection can also be observed when participants imagine (i.e., retrieve from memory) the previously presented masks. In this double-blind, placebo-controlled study, we show that the gamma-aminobutyric acid-A (GABAA) receptor agonist alprazolam disrupts perceptual but not imagery enhancement of contrast detection in individuals with generalized anxiety and adjustment disorder. The weakened target detection at short target-to-mask distances became more pronounced after the administration of the GABA-agonist in both perception and imagery conditions. Healthy control participants did not differ from individuals with generalized anxiety and adjustment disorder receiving placebo. These results indicate that perception and imagery can be dissociated by boosting GABA-ergic neurotransmission. Further studies are warranted to investigate this effect in healthy individuals.
journal_name
Vision Resjournal_title
Vision researchauthors
Kéri Sdoi
10.1016/j.visres.2014.10.030subject
Has Abstractpub_date
2015-01-01 00:00:00pages
58-63eissn
0042-6989issn
1878-5646pii
S0042-6989(14)00278-8journal_volume
106pub_type
杂志文章,随机对照试验相关文献
VISION RESEARCH文献大全abstract：:Recent investigations of the three-dimensional (3D) binocular eye positions in near vision have shown that a full characterization of vergence requires incorporation of its torsional component. The latter has a proportional relationship with horizontal vergence and elevation, causing the eyes to have intorsion in near...
journal_title：Vision research
pub_type： 杂志文章
doi：10.1016/0042-6989(95)00161-1
更新日期：1996-03-01 00:00:00
abstract：:If the spatial-frequency of sinusoidal signals in a contrast-detection experiment varies randomly from trial to trial, then performance is decreased compared with that in a situation where it remains constant. This spatial-frequency uncertainty effect can more or less be compensated by presenting informative cues shor...
journal_title：Vision research
pub_type： 杂志文章
doi：10.1016/0042-6989(96)00088-0
更新日期：1996-11-01 00:00:00
abstract：:Techniques that involve the use of comb-filtered spectra to study human colour vision have been developed in previous work (Bonnardel, V., Bellemare, H., Mollon, J.D., 1996. Measurements of human sensitivity to comb-filtered spectra, Vision Research 36, 2713-2720; Bonnardel, V., Ruderman D.L., Barlow, H.B., 1997. A fa...
journal_title：Vision research
pub_type： 杂志文章
doi：10.1016/s0042-6989(00)00278-9
更新日期：2001-03-01 00:00:00
abstract：:Thresholds for the detection of contrast differences and spatial frequency differences present in a sine-wave grating with suprathreshold contrast were measured as a function of the size of the grating and the number of cycles in the grating. For gratings with the same number of cycles, these thresholds are found to b...
journal_title：Vision research
pub_type： 杂志文章
doi：10.1016/0042-6989(83)90203-1
更新日期：1983-01-01 00:00:00
abstract：:Some results from a survey of 43 patients who had a monofocal intra-ocular-lens (IOL) in one eye and a concentric bifocal intra-ocular-lens in the fellow eye are reported. Twenty patients with 6/9 or better post-operative visual acuity in both eyes, participated in the main part of the study. Optical transfer function...
journal_title：Vision research
pub_type： 杂志文章
doi：10.1016/s0042-6989(97)00447-1
更新日期：1998-09-01 00:00:00
abstract：:Foley [J. Opt. Soc. Am. A 11 (1994) 1710] has proposed an influential psychophysical model of masking in which mask components in a contrast gain pool are raised to an exponent before summation and divisive inhibition. We tested this summation rule in experiments in which contrast detection thresholds were measured fo...
journal_title：Vision research
pub_type： 杂志文章
doi：10.1016/s0042-6989(01)00291-7
更新日期：2002-04-01 00:00:00
abstract：:We compared the thresholds and response properties of extracellularly recorded retinal ganglion cells (RGCs) in wild-type and rd1 mouse retinas to electrical stimulation of the retinal neural network. Retinas were stimulated in vitro with biphasic current pulses (1 ms/phase) applied with a 400-microm diameter, subreti...
journal_title：Vision research
pub_type： 杂志文章
doi：10.1016/j.visres.2008.04.016
更新日期：2008-06-01 00:00:00
abstract：:It is generally held that protanopes and deuteranopes see only regions of blues and yellows in the visible spectrum, with an achromatic point, called the neutral point, separating these regions. Considerations of a zone model of color vision for the dichromatic observer led us to predict that a reduced form of red/gre...
journal_title：Vision research
pub_type： 杂志文章
doi：10.1016/0042-6989(87)90013-7
更新日期：1987-01-01 00:00:00
abstract：:A global shape judgement task was used to investigate the combination of stereopsis and kinetic depth. With both cues present, there were no distortions of shape perception, even under conditions where either cue alone did show such distortions. We suggest that the addition of motion information overcomes the stereo d...
journal_title：Vision research
pub_type： 杂志文章
doi：10.1016/0042-6989(94)90106-6
更新日期：1994-09-01 00:00:00
abstract：:If we look out of the window of a travelling train our eyes move rapidly back and forth (saccadic movement). With no attention to individual objects, gaze velocity is low but nystagmic frequency is high (stare nystagmus). If we are interested in individual objects, the angular velocity of gaze is high and the nystagmi...
journal_title：Vision research
pub_type： 杂志文章
doi：10.1016/s0042-6989(98)00212-0
更新日期：1999-04-01 00:00:00
abstract：:In visual search, an irrelevant colour singleton captures attention when the colour of the distractor changes across trials (e.g., from red to green), but not when the colour remains constant (Becker, 2007). The present study shows that intertrial changes of the distractor colour also modulate oculomotor capture: an i...
journal_title：Vision research
pub_type： 杂志文章
doi：10.1016/j.visres.2010.08.001
更新日期：2010-10-12 00:00:00
abstract：:The perceived relative position of a moving object is frequently shifted as compared to the relative position of the object in the real world. The illusions have traditionally been explained by temporal models that influence the perceptual latency of visual objects. However, another compelling theory has recently been...
journal_title：Vision research
pub_type： 杂志文章
doi：10.1016/j.visres.2010.09.021
更新日期：2010-11-23 00:00:00
abstract：:Edge detection is widely believed to be an important early stage in human visual processing. However, there have been relatively few attempts to map human edge detection filters. In this study, observers had to locate a randomly placed step edge in brown noise (the integral of white noise) with a 1/f2 power spectrum. ...
journal_title：Vision research
pub_type： 杂志文章
doi：10.1016/j.visres.2018.09.007
更新日期：2018-12-01 00:00:00
abstract：:In the past 20 years, there has been a great advancement in knowledge pertaining to compliance with amblyopia treatments. The occlusion dose monitor introduced quantitative monitoring methods in patching, which sparked our initial understanding of the dose-response relationship for patching amblyopia treatment. This r...
journal_title：Vision research
pub_type： 杂志文章,评审
doi：10.1016/j.visres.2015.02.012
更新日期：2015-09-01 00:00:00
abstract：:Peripheral resolution acuity for achromatic gratings is known to be limited by the density of the underlying ganglion cell sampling array. After confirming isolation of the short-wavelength sensitive (SWS) system using chromatic adaptation methods, we wished to determine if resolution is limited by blue/yellow ganglio...
journal_title：Vision research
pub_type： 杂志文章
doi：10.1016/s0042-6989(02)00013-5
更新日期：2002-04-01 00:00:00
abstract：:Color samples selected from the OSA Uniform Color Scales set were seen isolated in a dark field, illuminated by hidden projectors. These appeared as self-luminous aperture colors when thus isolated. We employed a categorical color-naming procedure to assess color appearance. Achromatic surrounds of 33 min width, if ad...
journal_title：Vision research
pub_type： 杂志文章
doi：10.1016/0042-6989(89)90099-0
更新日期：1989-01-01 00:00:00
abstract：:The gap effect refers to a reduction in the latency of saccades to peripherally appearing targets when the fixation point disappears a short time before target appearance. The effect has been attributed to a number of potential mechanisms that function to assist in the maintenance of fixation. One such mechanism, atte...
journal_title：Vision research
pub_type： 杂志文章
doi：10.1016/j.visres.2006.01.017
更新日期：2006-08-01 00:00:00
abstract：:Large and small letter contrast sensitivity and visual acuity were assessed in 37 elderly eyes (mean VA -0.01 logMAR, Snellen 6/6) and their lens opacities were categorised and graded using the LOCS III system. Large letter contrast sensitivity was often not reduced in cataract from age-matched normal values and provi...
journal_title：Vision research
pub_type： 杂志文章
doi：10.1016/s0042-6989(97)00382-9
更新日期：1998-06-01 00:00:00
abstract：:During free viewing visual search, observers often refixate the same locations several times before and after target detection is reported with a button press. We analyzed the rate of microsaccades in the sequence of refixations made during visual search and found two important components. One related to the visual co...
journal_title：Vision research
pub_type： 杂志文章
doi：10.1016/j.visres.2013.12.001
更新日期：2014-02-01 00:00:00
abstract：:Foveal pathway visual function was assessed in 11 patients having tumours extending into the suprasellar region but without evidence of visual impairment as assessed by visual acuity and Bjerrum screen campimetry. Psychophysical and routine visual evoked potential (VEP) measurements were obtained from the eye ipsilate...
journal_title：Vision research
pub_type： 杂志文章
doi：10.1016/s0042-6989(96)00306-9
更新日期：1997-05-01 00:00:00
abstract：:Top-down feedback from working memory (WM) can exert an early and involuntary influence on visual selection for targets that are relatively difficult to discriminate [Soto, D., Heinke, D., Humphreys, G. W., & Blanco, M. J. (2005) Journal of Experimental Psychology: Human Perception and Performance, 31, 248]. Here, we ...
journal_title：Vision research
pub_type： 杂志文章
doi：10.1016/j.visres.2005.09.008
更新日期：2006-03-01 00:00:00
abstract：:To investigate the effect of intraocular scatter on stereopsis, we measured stereoacuity with scatter either remaining at the natural eye-induced level or further enhanced by a set of three different scatter filters. Stereo thresholds at different viewing durations were obtained using a psychophysical method of consta...
journal_title：Vision research
pub_type： 杂志文章
doi：10.1016/j.visres.2018.08.002
更新日期：2018-12-01 00:00:00
abstract：:A common computation in visual cortex is the divisive normalization of responses by a pooled signal of the activity of cells within its neighborhood. From a geometrical point of view, normalization constraints the population response to high-contrast stimuli to lie on the surface of a high-dimensional sphere. Here we ...
journal_title：Vision research
pub_type： 杂志文章
doi：10.1016/j.visres.2009.12.007
更新日期：2010-10-28 00:00:00
abstract：:Usually we assume that the central nervous system preserves temporal sequences. Here we show that moving objects--in the context of behaviour often dangerous ones--are seen with a shorter latency than stationary (flashed) objects. In addition moving objects are deblurred. Two mechanisms contribute to this functional s...
journal_title：Vision research
pub_type： 杂志文章
doi：10.1016/s0042-6989(99)00089-9
更新日期：1999-11-01 00:00:00
abstract：:There is ample psychophysical evidence that flicker is more salient in the peripheral than the central visual field, but the physiological basis of this eccentricity-dependant change is unclear. Here, we compared responsivity to temporal modulation of ganglion cells in central and peripheral primate retina. Above 30 H...
journal_title：Vision research
pub_type： 杂志文章
doi：10.1016/s0042-6989(02)00414-5
更新日期：2002-12-01 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：:Accommodative loss represents the fastest human biological decrement. Why? To examine this, the shape of the eye-lens during accommodation or its relaxation is analysed with special reference to age-related changes. The capsule is viewed as a force transmitter: the distribution of forces along centripetal capsular arc...
journal_title：Vision research
pub_type： 杂志文章
doi：10.1016/s0042-6989(00)00091-2
更新日期：2000-01-01 00:00:00
abstract：:Effects of glutamate and its agonists on horizontal cells appeared diversely when studied in turtle eyecup preparations. Consistent results were obtained when the isolated retina preparations were used. Not only kainate and quisqualate but also N-methyl-D-aspartate (NMDA) caused a sustained depolarization and light-ev...
journal_title：Vision research
pub_type： 杂志文章
doi：10.1016/0042-6989(89)90002-3
更新日期：1989-01-01 00:00:00
abstract：:Three experiments investigated category search in pigeons, using an artificial category created by morphing of human faces. Four pigeons were trained to search for category members among nonmembers, with each target item consisting of an item-specific component and a common component diagnostic of the category. Experi...
journal_title：Vision research
pub_type： 杂志文章
doi：10.1016/j.visres.2012.09.013
更新日期：2012-11-01 00:00:00
abstract：:Many models of visual performance predict image discriminability, the visibility of the difference between a pair of images. We compared the ability of three image discrimination models to predict the detectability of objects embedded in natural backgrounds. The three models were: a multiple channel Cortex transform m...
journal_title：Vision research
pub_type： 杂志文章
doi：10.1016/s0042-6989(97)00156-9
更新日期：1997-12-01 00:00:00
