Vision ResearchPub Date : 2025-12-01Epub Date: 2025-10-09DOI: 10.1016/j.visres.2025.108709
Ichasus Llamas-Cornejo , David H. Peterzell , Ignacio Serrano-Pedraza
{"title":"Orientation mechanisms in stereoscopic vision: an individual differences approach","authors":"Ichasus Llamas-Cornejo , David H. Peterzell , Ignacio Serrano-Pedraza","doi":"10.1016/j.visres.2025.108709","DOIUrl":"10.1016/j.visres.2025.108709","url":null,"abstract":"<div><div>The stereoscopic system is typically tested by measuring its response to sinusoidal disparity corrugations. Previous research using psychophysical methods like masking and adaptation has provided evidence about the existence of disparity mechanisms tuned to spatial frequency and orientation. Analyses based on individual differences have confirmed only the existence of disparity mechanisms tuned to spatial frequency. The main objective of this study is to investigate the existence of orientation-selective disparity mechanisms using an individual differences approach. We measured the disparity thresholds of 37 subjects using sinusoidal disparity corrugations constructed from dynamic random-dot stereograms with spatial frequencies of 0.1, 0.4, and 0.8 cpd and 7 orientations (ranging from 0° to 90° in steps of 15°). Stereo thresholds for 0.1 cpd showed a strong anisotropy with disparity thresholds increasing from 90° (horizontal) to 0° (vertical). This anisotropy was reduced for the other two spatial frequencies. Component and factor analyses revealed that closer orientations tend to group together, suggesting the presence of underlying orientation-selective mechanisms in stereovision. These results provide new evidence for disparity channels tuned to orientation underlying the processing of disparity corrugations.</div></div>","PeriodicalId":23670,"journal":{"name":"Vision Research","volume":"237 ","pages":"Article 108709"},"PeriodicalIF":1.4,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145266100","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"心理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Vision ResearchPub Date : 2025-12-01Epub Date: 2025-09-18DOI: 10.1016/j.visres.2025.108700
Ewa Niechwiej-Szwedo , Susana Wu , Deborah Giaschi , Linda Colpa , Agnes M.F. Wong , Lisa Christian
{"title":"Eye-hand coordination during a precision grasping and placement task in children with a history of amblyopia","authors":"Ewa Niechwiej-Szwedo , Susana Wu , Deborah Giaschi , Linda Colpa , Agnes M.F. Wong , Lisa Christian","doi":"10.1016/j.visres.2025.108700","DOIUrl":"10.1016/j.visres.2025.108700","url":null,"abstract":"<div><div>Eye-hand coordination is a key aspect of visuomotor control essential for performing most daily activities. Disruption in visuomotor control, characterized by slower arm movements and grasping errors, has been documented in children with amblyopia. This study aimed to characterize the effects of amblyopia on the temporal pattern of eye and hand coordination during the performance of a task that involves reaching, precision grasping, and placement. The study recruited 28 children with a history of amblyopia and 56 typically developing peers (age range 6–14 years). Children performed a bead-threading task while their eyes and hand movements were recorded concurrently. As hypothesized, children with amblyopia demonstrated poorer task performance, with greater deficits for the object manipulation compared to the reaching (transport) components. In comparison to their peers with normal vision, children with amblyopia had shorter reaction time for initiating eye and hand movement, longer object fixation duration to guide grasp execution and object placement, and lower eye-hand latency difference for the second movement indicating that the hand movement preceded eye initiation. These results suggest that children with amblyopia have poorer motor planning ability, which impacts movement execution. Longer fixations during object manipulations indicate that more time is required to transform the noisy visual input into a motor response. Overall, the study adds to the growing body of evidence highlighting deficits in visuomotor control in amblyopia.</div></div>","PeriodicalId":23670,"journal":{"name":"Vision Research","volume":"237 ","pages":"Article 108700"},"PeriodicalIF":1.4,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145092696","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"心理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Vision ResearchPub Date : 2025-12-01Epub Date: 2025-09-15DOI: 10.1016/j.visres.2025.108695
Christopher DiMattina
{"title":"A comparison of density-based and feature-based texture boundary segmentation","authors":"Christopher DiMattina","doi":"10.1016/j.visres.2025.108695","DOIUrl":"10.1016/j.visres.2025.108695","url":null,"abstract":"<div><div>Previous studies have demonstrated that density of texture elements is an important perceptual aspect of textural appearance, and can enable texture segmentation in the absence of other cues. We compared segmentation thresholds for two kinds of second-order boundaries comprised of two species of micropatterns (e.g., horizontal and vertical Gabors): (1) <em>Feature boundaries</em>, with the same number of total micropatterns on opposite sides but different numbers of each micropattern species within each side, and (2) <em>Density boundaries</em>, with different numbers of total micropatterns on opposite sides, but with the same number of both micropattern species within each side. Contrary to the predictions of a standard <em>late-pooling</em> Filter-Rectify-Filter (FRF) model in which different micropattern specific first-order channels are analyzed by different second stage filters before pooling, we observed lower segmentation thresholds for density boundaries than feature boundaries. This suggests that density boundaries may be detected by a different, <em>early-pooling</em> mechanism. In a second experiment, we considered how two species of micropatterns combine for boundary segmentation. When two single-micropattern-species density boundaries are superimposed in-phase to form a new density boundary, the boundaries formed by each micropattern species combine via probability summation. By contrast, when two single-micropattern-species density boundaries are superimposed in opposite-phase to form a feature boundary, segmentation performance is worse than for either single-micropattern-species boundary alone. We conclude that the mechanisms for density-based texture segmentation are not identical to the mechanisms for feature-based segmentation and that density-sensitive mechanisms most likely integrate across multiple first-order filters responsive to different micropattern species.</div></div>","PeriodicalId":23670,"journal":{"name":"Vision Research","volume":"237 ","pages":"Article 108695"},"PeriodicalIF":1.4,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145060599","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"心理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Vision ResearchPub Date : 2025-12-01Epub Date: 2025-09-24DOI: 10.1016/j.visres.2025.108694
Zi Rui Li , Yi Pang , Xiao Tong Chen , Marilyn Vricella , Daniella Rutner , Jose-Manuel Alonso , Jingyun Wang
{"title":"ON-Pathway visual acuity deficits in 8–12 years old children with unilateral amblyopia","authors":"Zi Rui Li , Yi Pang , Xiao Tong Chen , Marilyn Vricella , Daniella Rutner , Jose-Manuel Alonso , Jingyun Wang","doi":"10.1016/j.visres.2025.108694","DOIUrl":"10.1016/j.visres.2025.108694","url":null,"abstract":"<div><div>Conventional visual acuity (VA) tests, using black optotypes on white background, may not fully detect subtle ON-pathway amblyopia deficits or increases in visual dark dominance. This pilot study tests the hypothesis that VA testing with reverse contrast polarity, white optotypes on black background, is more sensitive in detecting amblyopia than conventional VA testing. Two groups of children aged 8–12 were enrolled. The amblyopic group (N = 13) had a best-corrected VA of 20/32 or worse in the amblyopic eye and an interocular VA difference of ≥ 0.2 logMAR. The normal control group (N = 16) had best-corrected VA equal to or better than 20/25 and an interocular VA difference of ≤ 0.1 logMAR. Monocular VA was tested for each polarity using an ETDRS program using the Amblyopia Treatment Study protocol, with results reported as a Score. Two optotype polarities were tested in randomized order, and tests were repeated after a 30-minute interval. VA was compared among amblyopic, fellow, and the right eyes of the control group for both polarities. For amblyopic eyes, the mean VA Score was significantly lower for white optotypes than for black optotypes by 3.6 letters or approximately 0.07 logMAR, indicating that amblyopic eyes had more difficulty seeing white than black optotypes. For fellow eyes, the mean Score was also significantly lower for white than for black optotypes. No significant differences in mean Scores between two polarities were found within the control eyes. Our findings suggest that visual acuity testing with reverse polarity could be more sensitive to detect amblyopia in children.</div></div>","PeriodicalId":23670,"journal":{"name":"Vision Research","volume":"237 ","pages":"Article 108694"},"PeriodicalIF":1.4,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145118215","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"心理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Vision ResearchPub Date : 2025-12-01Epub Date: 2025-10-02DOI: 10.1016/j.visres.2025.108708
Krista R Kelly , Mina Nouradanesh , Reed M Jost , Christina S. Cheng-Patel , Eileen E. Birch , Serena X. Wang , James Y. Tung , Ewa Niechwiej-Szwedo
{"title":"Eye-hand coordination during visually-guided reaching in children with monocular deprivation amblyopia","authors":"Krista R Kelly , Mina Nouradanesh , Reed M Jost , Christina S. Cheng-Patel , Eileen E. Birch , Serena X. Wang , James Y. Tung , Ewa Niechwiej-Szwedo","doi":"10.1016/j.visres.2025.108708","DOIUrl":"10.1016/j.visres.2025.108708","url":null,"abstract":"<div><div>Monocular deprivation (MD) amblyopia caused by a dense unilateral congenital or infantile cataract leads to both sensory and ocular motor deficits, which can in turn affect motor performance. Previous research shows reduced fine motor skills in children with MD amblyopia on standardized tasks. Here, we evaluate eye-hand coordination during visually-guided reaching in MD amblyopia. A group of 17 children aged 7–15 years with MD amblyopia resulting from a unilateral cataract and a group of 41 age-similar control children were enrolled. During binocular viewing, children’s reaching movements (LEAP Motion Controller) and eye movements (EyeLink 1000 binocular eye tracker) were recorded as they reached to touch a dot displayed at one of four locations (±5 deg or ±10 deg) on a computer monitor. Saccade and reach kinematic measures were assessed between groups, and factors associated with impairments in the MD amblyopia group were evaluated. The MD amblyopia group as a whole had impaired saccade (lower saccade gain, reduced saccade precision, more reach-related saccades) and reach (longer total reach duration, slower peak velocity, reduced touch accuracy) kinematics compared to controls. However, performance was worse in those with a poorer visual acuity outcome (≥0.7 logMAR) compared to good visual acuity outcome (≤0.6 logMAR). MD amblyopia impacts the development of eye-hand coordination during reaching, particularly in those with a poorer visual acuity outcome. Longer deceleration in the final approach and more reach-related saccades may suggest an inability to adapt or form an efficient compensatory strategy and may also be indicative of impaired on-line control.</div></div>","PeriodicalId":23670,"journal":{"name":"Vision Research","volume":"237 ","pages":"Article 108708"},"PeriodicalIF":1.4,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145220610","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"心理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Vision ResearchPub Date : 2025-12-01Epub Date: 2025-09-09DOI: 10.1016/j.visres.2025.108683
Wiktor F. Młynarski
{"title":"Origins and objectives of computational diversity in sensory populations","authors":"Wiktor F. Młynarski","doi":"10.1016/j.visres.2025.108683","DOIUrl":"10.1016/j.visres.2025.108683","url":null,"abstract":"<div><div>Populations of sensory neurons are not homogeneous. Even neighboring neurons located in the same brain area can process identical stimuli in significantly different ways. Retinal ganglion cells (RGCs) are a prominent example of such heterogeneity — they exhibit diverse properties whose computational role and purpose remain mysterious. In this review, we explore normative theories of neural computation that attempt to explain the origins and role of functional variability in the retina. We first express a general mathematical formulation of normative theories of neural computation and identify components of these theories that can explain the heterogeneity of sensory populations. We then organize existing theoretical studies of retinal coding according to the factors they highlight as explanations of the computational diversity in the retina — the beginning of the visual hierarchy.</div></div>","PeriodicalId":23670,"journal":{"name":"Vision Research","volume":"237 ","pages":"Article 108683"},"PeriodicalIF":1.4,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145020160","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"心理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Vision ResearchPub Date : 2025-12-01Epub Date: 2025-10-04DOI: 10.1016/j.visres.2025.108707
Narumi Ogawa , Isamu Motoyoshi
{"title":"Rapid cortical responses to the unpleasantness of natural surfaces and their relationship to image statistics","authors":"Narumi Ogawa , Isamu Motoyoshi","doi":"10.1016/j.visres.2025.108707","DOIUrl":"10.1016/j.visres.2025.108707","url":null,"abstract":"<div><div>Humans not only perceive material properties of natural surfaces but also evaluate their affective qualities, such as pleasantness or unpleasantness. Recent psychophysical studies suggest that such emotional impressions can arise directly from low-level image statistics, independent of object recognition. To elucidate the neural mechanisms underlying these immediate affective responses, we recorded visual evoked potentials (VEPs) while participants viewed 150 images of natural surfaces varying in affective valence. We identified occipital VEP components emerging around 100–150 ms after stimulus onset that were significantly correlated with subjective unpleasantness ratings. Moreover, these unpleasantness-related VEPs were accurately predicted by a linear combination of VEP components associated with a small set of diagnostic image statistics. Our findings indicate that early visual cortical activity encodes image features that give rise to unpleasant affective responses, supporting the notion that rapid, low-level visual processing can directly contribute to the emotional evaluation of visual textures and materials.</div></div>","PeriodicalId":23670,"journal":{"name":"Vision Research","volume":"237 ","pages":"Article 108707"},"PeriodicalIF":1.4,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145220611","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"心理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Corrigendum to “Contextual feedback in object recognition: A biologically inspired computational model and human behavioral study” [Vision Res. 237 (2025) 108679]","authors":"Elahe Soltandoost , Karim Rajaei , Reza Ebrahimpour","doi":"10.1016/j.visres.2025.108698","DOIUrl":"10.1016/j.visres.2025.108698","url":null,"abstract":"","PeriodicalId":23670,"journal":{"name":"Vision Research","volume":"237 ","pages":"Article 108698"},"PeriodicalIF":1.4,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145102754","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"心理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Vision ResearchPub Date : 2025-11-01Epub Date: 2025-08-22DOI: 10.1016/j.visres.2025.108677
D. Schluppeck , D. Arnoldussen , Z. Hussain , J. Besle , S.T. Francis , P.V. McGraw
{"title":"Strabismus and amblyopia disrupt spatial perception but not the fidelity of cortical maps in human primary visual cortex","authors":"D. Schluppeck , D. Arnoldussen , Z. Hussain , J. Besle , S.T. Francis , P.V. McGraw","doi":"10.1016/j.visres.2025.108677","DOIUrl":"10.1016/j.visres.2025.108677","url":null,"abstract":"<div><div>Amblyopia is a common disorder of spatial vision and is frequently associated with the presence of anisometropia, strabismus, or both, during visual development. For highly visible stimuli, subjects with strabismic amblyopia often report marked spatial distortions, but the neural basis of this supra-threshold deficit is not well understood. Here, we used a combination of behavioural measurements and visual field mapping with high spatial-resolution functional magnetic resonance imaging (fMRI) at 7 T to assess perceptual distortions in 12 participants with strabismic amblyopia and 9 control subjects. We measured both behavioural and cortical visual field maps monocularly through each eye. Although amblyopic subjects showed increased perceptual distortions, the layout of V1 maps, as measured through the eccentricity and size of population receptive fields, was largely unaltered compared to controls, with no discernible difference in cortical magnification between groups. This suggests that disruptions to V1 retinotopy do not explain the perceptual distortions experienced by amblyopes.</div></div>","PeriodicalId":23670,"journal":{"name":"Vision Research","volume":"236 ","pages":"Article 108677"},"PeriodicalIF":1.4,"publicationDate":"2025-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144887496","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"心理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Vision ResearchPub Date : 2025-11-01Epub Date: 2025-08-27DOI: 10.1016/j.visres.2025.108680
Ljubica Jovanovic , Kristian Skoczek , Paul McGraw , Neil Roach , Alan Johnston
{"title":"The contribution of magnocellular selective adaptation to spatial distance compression","authors":"Ljubica Jovanovic , Kristian Skoczek , Paul McGraw , Neil Roach , Alan Johnston","doi":"10.1016/j.visres.2025.108680","DOIUrl":"10.1016/j.visres.2025.108680","url":null,"abstract":"<div><div>Topographic maps early in visual processing preserve the spatial relations of visual stimuli but the metric relationships between these visual directions is not directly accessible. To investigate the magnocellular pathway’s role in metric spatial vision, we employed an adaptation paradigm. Exposure to a 60 Hz flickering disc array (subjectively invisible) induced a systematic compression in the perceived distance between subsequently presented dot pairs. This compression was strongest when adaptation preferentially modulated low spatial frequency channels, consistent with the properties of transient channels tuned to low spatial and high temporal frequencies. Crucially, this compression was attenuated when the adaptor consisted of two cyan lattices rotating on a magenta background near isoluminance, as confirmed by a global motion direction discrimination task. The same pattern emerged when test dots were isoluminant with the background, ruling out test-adaptor similarity as a critical factor. Finally, an isoluminant red-green adaptor flickering on a yellow background induced compression at 3 Hz, but not at 60 Hz. This dissociation aligns with the known properties of magnocellular neurons, which are insesitive to high temporal frequency isoluminant red-green modulation, but can respond to slow isoluminant red-green modulations. These findings reveal a novel role of the magnocellular pathway in metric spatial vision.</div></div>","PeriodicalId":23670,"journal":{"name":"Vision Research","volume":"236 ","pages":"Article 108680"},"PeriodicalIF":1.4,"publicationDate":"2025-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144907459","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"心理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}