Austin Roorda

Revealing the benefit of eye motion for acuity under emulated cone loss

The paper shows that eye motion compensates for cone loss in vision, maintaining acuity even with significant cone cell reduction.

A discontinuity in motion perception during fixational drift

The paper investigates motion perception during fixational drift and finds a sharp discontinuity where stimuli moving with retinal slip appear stable, while those moving with eye motion appear to move.

Subfoveal scotomas trigger fine-scale fixation reorganization: insights from retinal imaging and retinal-contingent stimulation

This study investigates how subfoveal scotomas affect fixation behavior and reveals fine-scale plasticity in the human visuomotor system.

The Optimal Retinal Locus for High-Resolution Vision in Space and Time

The paper identifies an optimal retinal location for high-resolution vision, showing it provides better acuity than the anatomical fovea and is stabilized by eye movements timed before stimulus presentation.

A paradoxical misperception of relative motion

This study investigates how retinal image background content affects the perception of relative motion, finding that it is essential for computing motion direction but can paradoxically cause misperception of amplified retinal slip.

It's not easy seeing green: the veridical perception of small spots

This study investigates how stimulus parameters affect color perception of small light spots, finding that size and intensity influence green perception and saturation.

Characterizing Cone Spectral Classification by Optoretinography

This study compares optoretinography (ORG) and retinal densitometry for cone spectral classification, finding ORG offers higher sensitivity and reliability.

Fixational Eye Movements Depend on Task and Target

This study examines how fixational eye movements vary with task type and target, finding that active tasks reduce microsaccades and increase fixation stability.

The optoretinogram reveals how human photoreceptors deform in response to light

This paper introduces optoretinogram, a non-invasive method to image light-induced shape changes in human cone photoreceptors in vivo, revealing a biphasic response to light.

The effects of fixational tremor on the retinal image

The paper examines the effects of fixational tremor on the retinal image by analyzing high-frequency eye movement data from six subjects.

Human Foveal Cone Photoreceptor Topography and its Dependence on Eye Length

The paper measures foveal cone density in relation to axial length in living eyes and finds that myopes have higher angular sampling density despite retinal stretching.

Spatial summation of individual cones in human color vision

The paper investigates how individual and paired cone photoreceptors in the human retina combine signals to produce color percepts, finding evidence of spectral opponency and experience-dependent saturation.

Transverse chromatic offsets with pupil displacements in the human eye: Sources of variability and methods for real-time correction

This study assesses variability in transverse chromatic aberration (TCA) with pupil displacements and demonstrates real-time correction methods in an SLO system.

The spectral identity of foveal cones is preserved in hue perception

The paper shows that hue perception in the fovea is determined by cone type, with L and M cones producing distinguishable hues, while saturation and brightness are independent of cone type.

Spatial summation in the human fovea: the effect of optical aberrations and fixational eye movements

The paper investigates how optical aberrations and fixational eye movements affect spatial summation in the human fovea, finding that post-receptoral neural pooling limits summation.

Sensations from a single M-cone depend on the activity of surrounding S-cones

The paper investigates how the activity of surrounding S-cones influences the color sensations from individual M-cones, revealing context-dependent hue perception.

Suboptimal eye movements for seeing fine details

The paper investigates whether miniature eye movements are optimally tuned for seeing fine spatial details and finds they may not be optimal.