This review describes the subjective experience of visual aura in migraine, outlines theoretical models this phenomenon, and explores how these may be linked to neurochemical, electrophysiological, psychophysical differences sensory processing that have been reported migraine with aura. Reaction-diffusion used model hallucinations thought arise from cortical spreading depolarisation depression One aim is make underlying principles accessible a general readership. Cortical depends on balance...

The present study explores the efficacy and social potential of immersive-360°theater-live-captured theater performances filmed for virtual reality (VR) viewing-as a remote platform audiences to view theater.We obtained survey structured interview responses from 166 30 participants, respectively, selfcategorized as regular theatergoers, novices, or underserved audiences.We measured immersion, presence, emotional arousal in auditorium, technology acceptance, perceptions including...

Individuals with migraine show differences in visual perception compared to control groups. It has been suggested that lateral interactions between neurons might account for some of these differences. This study seeks further establish the strength and spatial extent excitatory inhibitory migraine-with-aura using a classic masking task. Observers indicated which two intervals contained centrally presented, vertical Gabor target varying contrast. In separate blocks trials, was presented alone...

The binocular energy model of neural responses predicts that depth from disparity might be perceived in the reversed direction when contrast dots presented to one eye is reversed. While reversed-depth has been found using anti-correlated random-dot stereograms (ACRDS) findings are inconsistent across studies. mixed may accounted for by presence a gap between target and surround, or as result overlap around vertical edges stimuli. To test this, we assessed whether (1) size (0, 19.2 38.4 arc...

Visual field loss is a debilitating impairment that can impact normal daily activities. The advancement of augmented and virtual realities brings opportunities for potential substitutive technologies visual loss. Here we outline conceptual approach to increasing the amount useful information by overlaying blind into sighted field. In this proof-of-concept experiment, 33 observers were allocated either left or right condition (with simulated scotoma). All completed line bisection task in all...

Binocular disparity is an important cue to three-dimensional shape. We assessed the contribution of this reliability and consistency depth in stereoscopic photographs natural scenes. Observers viewed cluttered scenes while adjusting a gauge figure indicate apparent orientation surfaces objects. The was positioned on objects at multiple points scene, settings were made under monocular binocular, viewing. Settings used create relief map, indicating structure scene. found that binocular cues...

Face recognition from 2D images is influenced by various factors, including lighting conditions, viewing direction, rotation, and polarity inversion. It has been proposed that these techniques affect face distorting shape shading. This study investigates the perception of 3D in using a gauge figure task. Two experiments were conducted where participants adjusted across multiple locations within image to assess its surface structure. We manipulated orientation, inversion (exp 2). While...

Individuals with migraine aura show differences in visual perception compared to control groups. Measures of contrast sensitivity have suggested that people are less able exclude external noise, and this relates higher variability neural processing. The current study groups for narrow-band grating stimuli at 2 8 cycles/degree, masked by Gaussian white noise. We predicted would be lower the group high noise levels. Contrast was low spatial frequency stimuli, decreased strength masking did...

Perceptual learning is typically highly specific to the stimuli and task used during training. However, recently, it has been shown that training on global motion can transfer untrained tasks, reflecting generalising properties of mechanisms at this level processing. We investigated (i) if feedback was required for in a coherence task, (ii) across spatial frequency (iii) measure contrast sensitivity. For our first experiment, two groups, with without feedback, trained ten days broadband...

The small differences between the images formed in our left and right eyes are an important cue to three-dimensional structure of scenes. These disparities encoded by binocular neurons visual cortex. At earliest stage processing, these respond correlation images. We assessed perception depth anticorrelated stimuli, which contrast polarity one eye is reversed, as a function their location retinal image, configuration (a horizontal edge or circle surrounded annulus) found that, regardless...

The present study explores the efficacy and social potential of immersive-360° theatre– live captured theatre performances filmed for virtual reality viewing - as a remoteplatform audiences to view theatre. We obtained survey structured interviewresponses from 166 30 participants, respectively, self-categorised regulartheatregoers, novices, underserved audiences. measured immersion,presence, emotional arousal in auditorium, technology acceptance, andsocial perceptions including its...

Binocular information is an important cue to depth, and encoded by disparity-tuned cells in the visual cortex. The responses of these depend on their phase-disparity tuning, interocular correlation stimulus within receptive field. This has allowed us develop computational models how binocular can be used estimate depth. One manipulation this context anticorrelation stimuli between two eyes, which contrast polarity elements one eye reversed. results inversion disparity tuning function...

The surface properties that constitute 3D facial structures are key for identity recognition. Johnston, Hill & Carman (1992, Perception 21(3)) showed inversion effects on recognition, where error rates identifying inverted compared to upright faces greater, less marked when illuminated from below. authors suggest illumination below disrupts shape information processing, while spatial configural such both manipulations do not have an additive effect recognition impairment. present study...

The distribution of the preferred disparities binocularly-tuned neurons is highly non-uniform, with many more tuned to small close horopter. These have been classified as tuned-excitatory, tuned-inhibitory, near and far (Poggio 1995), depending on way that their responses vary disparity. Near cells respond a broad range crossed or uncrossed disparities, respectively, while excitatory inhibitory are modulated by within narrow range. This disparity tuning optimised for efficient coding found...

There are limited treatments for individuals who experience a loss of visual function as result stroke. Yet, it is reported approximately 60 per cent stroke survivors will have permanent impairment. Recent research indicates that the system can learn new information, and improvements in perception observed training. Perceptual training, therefore, may be potential tool rehabilitation. However, rehabilitation areas through perceptual learning controversial topic, still not yet fully...

The perception of depth depends on the calculation a binocular cross-correlation by cortical neurons. energy model neural responses predicts might be perceived in reversed direction when contrast dots presented to one eye is reversed. Presenting an anti-correlated random-dot stereogram target (aRDS) adjacent correlated background (cRDS) has produced depth, however these results are inconsistent (Hibbard et al., 2014). Aoki (2017) found robust there was non-zero absolute disparity for...

Abstract Perceptual learning is typically highly specific to the stimuli and task used during training. However, recently it has been shown that training on global motion can transfer untrained tasks, reflecting generalising properties of mechanisms at this level processing. We investigated a) if feedback was required for when using an equivalent noise coherence task, b) across spatial frequency a measure contrast sensitivity. For our first experiment two groups, with without feedback,...

ABSTRACT The binocular energy model of neural responses predicts that depth from disparity might be perceived in the reversed direction when contrast dots presented to one eye is reversed. While has been found using anti-correlated random-dot stereogram (ACRDS) findings are inconsistent across studies. mixed may accounted for by presence a gap between target and surround, or as result overlap around vertical edges stimuli. To test this, we assessed whether (1) size (0, 19.2 38.4 arc min) (2)...

Anticorrelated random-dot stereograms (aRDS) are stimuli comprised of a binocular pair images randomly positioned dots in which the one eye’s view replaced by their photographic negatives. In some cases, energy model neural responses predicts that perception depth should be reversed for aRDS. contrast, from second-order channels predict forward direction (Asher & Hibbard, 2008). Findings reversed-depth inconsistent, and highly dependent on type stimulus, its location duration presentation....