Antony B. Morland
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View article: Mesoscale developmental rivalry in human extrastriate visual cortex
Mesoscale developmental rivalry in human extrastriate visual cortex Open
In humans and non-human primates, the extrastriate visual cortex contains fine-scale columns selectively responsive to motion, disparity, and color. However, the developmental interplay between these functional modules remains poorly under…
Physical learning in reprogrammable metamaterials for adaptation to unknown environments Open
Reprogrammable mechanical metamaterials, composed of a lattice of discretely adaptive elements, are emerging as a promising platform for mechanical intelligence. To operate in unknown environments, such structures must go beyond passive re…
View article: Reduced functional connectivity between central representations of V1 and foveal-biased face-selective region in central vision loss
Reduced functional connectivity between central representations of V1 and foveal-biased face-selective region in central vision loss Open
Individuals with central visual deficits exhibit atrophy of the visual cortex in regions representing the central visual field and show little or no functional response there. Information in the central and peripheral visual field appear t…
Interocular suppression in chromoluminance patterns measured with SSVEP Open
Many cells in the early human visual system respond to either chromatic or luminance contrast or a combination of both. In addition, depending on their location in the visual hierarchy, these cells may receive input from either one eye or …
Poster Session: Chromatic and luminance contrast adaptation measured using pupillometry and SSVEP Open
Previous evidence suggests both chromatic and luminance contrast adaptation reduces contrast sensitivity in the post-adaptation period. This effect is chromatically-tuned: adaptation is greatest when the adaptor and probe lie on the same c…
View article: Mapping curvature domains in human V4 using CBV-sensitive layer-fMRI at 3T
Mapping curvature domains in human V4 using CBV-sensitive layer-fMRI at 3T Open
Introduction A full understanding of how we see our world remains a fundamental research question in vision neuroscience. While topographic profiling has allowed us to identify different visual areas, the exact functional characteristics a…
Retinotopy drives the variation in scene responses across visual field map divisions of the occipital place area Open
The occipital place area (OPA) is a scene-selective region on the lateral surface of human occipitotemporal cortex that spatially overlaps multiple visual field maps, as well as portions of cortex that are not currently defined as retinoto…
In primary visual cortex fMRI responses to chromatic and achromatic stimuli are interdependent and predict contrast detection thresholds Open
Chromatic and achromatic signals in primary visual cortex have historically been considered independent of each other but have since shown evidence of interdependence. Here, we investigated the combination of two components of a stimulus; …
Improved Structure and Function in Early-Detected Second-Eye Neovascular Age-Related Macular Degeneration Open
Proprietary or commercial disclosure may be found in the Footnotes and Disclosures at the end of this article.
Poster Session II: SSVEP measurements of color and spatial frequency response in V1 Open
All inputs undergo binocular combination in V1 but the rules governing the combination appear to depend on both chromaticity and SF.
The role of task on the human brain’s responses to, and representation of, visual regularity defined by reflection and rotation Open
Identifying and segmenting objects in an image is generally achieved effortlessly and is facilitated by the presence of symmetry: a principle of perceptual organisation used to interpret sensory inputs from the retina into meaningful repre…
View article: Achromatopsia—Visual Cortex Stability and Plasticity in the Absence of Functional Cones
Achromatopsia—Visual Cortex Stability and Plasticity in the Absence of Functional Cones Open
Remapping of the cortical representation of the central visual field is not a general feature in achromatopsia. It is concluded that plasticity of the human primary visual cortex is less pronounced than previously assumed. A pretherapeutic…
The Emergence of Tuning to Global Shape Properties of Radial Frequency Patterns in the Ventral Visual Pathway Open
Radial frequency (RF) patterns, created by sinusoidal modulations of a circle's radius, are processed globally when RF is low. These closed shapes therefore offer a useful way to interrogate the human visual system for global processing of…
Increasing spatial frequency of S-cone defined gratings reduces their visibility and brain response more than for gratings defined by L-M cone contrast Open
Chromatic sensitivity reduces as spatial frequency increases. Here, we explore the behavioural and neuronal responses to chromatic stimuli at two spatial frequencies for which the difference in sensitivity will be greater for S-cone than L…
The emergence of tuning to global shape properties of radial frequency patterns in the ventral visual pathway Open
Radial frequency patterns - created by sinusoidal modulations of a circle’s radius - are processed globally when radial frequency is low. These closed shapes therefore offer a useful way to interrogate the human visual system for global pr…
In a case of longstanding low vision regions of visual cortex that respond to tactile stimulation of the finger with Braille characters are not causally involved in the discrimination of those same Braille characters Open
Braille reading and other tactile discrimination tasks recruit the visual cortex of both blind and normally sighted individuals undergoing short-term visual deprivation. Prior functional magnetic resonance imaging (fMRI) work in patient 'S…
View article: Cortical Atrophy Predicts Visual Performance in Long-Term Central Retinal Disease; GCL, pRNFL and Cortical Thickness Are Key Biomarkers
Cortical Atrophy Predicts Visual Performance in Long-Term Central Retinal Disease; GCL, pRNFL and Cortical Thickness Are Key Biomarkers Open
Long-term central retinal disease is associated with significant structural changes to both the retina and the brain. Exploratory analysis suggests that monitoring GCL thickness may be a sensitive biomarker of disease progression and reduc…
CHIASM, the human brain albinism and achiasma MRI dataset Open
We describe a collection of T1-, diffusion- and functional T2*-weighted magnetic resonance imaging data from human individuals with albinism and achiasma. This repository can be used as a test-bed to develop and validate tractography metho…
View article: Structural Differences Across Multiple Visual Cortical Regions in the Absence of Cone Function in Congenital Achromatopsia
Structural Differences Across Multiple Visual Cortical Regions in the Absence of Cone Function in Congenital Achromatopsia Open
Most individuals with congenital achromatopsia (ACHM) carry mutations that affect the retinal phototransduction pathway of cone photoreceptors, fundamental to both high acuity vision and colour perception. As the central fovea is occupied …
Chiasmal malformations dataset: a unique neuroimaging testbed Open
The human optic chiasm is formed normally by almost equal populations of crossing and non-crossing optic nerve fibers. This proportion can be affected by rare disorders, such as albinism or achiasma (Hoffmann and Dumoulin, 2015), causing, …
View article: Anatomical changes to primary visual cortex in the congenital absence of cone input
Anatomical changes to primary visual cortex in the congenital absence of cone input Open
Achromatopsia (ACHM), a rare autosomal recessive visual disorder, is characterized by a loss of cone signal transduction. This results in a congenital absence of visual input from cone photoreceptors, which dominate the foveal retina, to p…
View article: Structural changes to primary visual cortex in the congenital absence of cone input in achromatopsia
Structural changes to primary visual cortex in the congenital absence of cone input in achromatopsia Open
Autosomal recessive Achromatopsia (ACHM) is a rare inherited disorder associated with dysfunctional cone photoreceptors resulting in a congenital absence of cone input to visual cortex. This might lead to distinct changes in cortical archi…
Regions of visual cortex responding to tactile stimulation in an individual with longstanding low vision are not causally involved in tactile processing performance Open
Braille reading and other tactile discrimination tasks recruit the visual cortex of both blind and normally sighted individuals undergoing short-term visual deprivation. Prior functional magnetic resonance imaging (fMRI) work in patient ‘S…
View article: Assessing functional reorganization in visual cortex with simulated retinal lesions
Assessing functional reorganization in visual cortex with simulated retinal lesions Open
Macular degeneration (MD) causes central vision loss, removing input to corresponding representations in the primary visual cortex. There is disagreement concerning whether the cortical regions deprived of input can remain responsive, and …