Visual perception and processing mechanisms

Computational simulations reproduce in vivo population receptive field mapping fMRI results

The paper shows that large-scale simulations can replicate in vivo pRF mapping variability patterns, offering insights into retinotopic mapping paradigms.

Task-specific neural mechanisms underlie biases in human orientation perception

The paper investigates how task-specific neural mechanisms underlie perceptual biases in orientation discrimination and contrast detection, finding that different constraints explain each task's oblique effect.

Grasping at the organization of object knowledge: testing different object-related dimensions as organizational principles of ventral temporal cortex.

The paper tests how object-related dimensions like animacy, graspability, and texture organize object representations in ventral temporal cortex using fMRI and multivariate analysis.

Chromatic contrasts predict human target detection in a natural search task

This study shows that hue and saturation contrasts, not luminance contrast, best predict human target detection in a natural search task with colored targets in a forest-like setting.

Turning an object into a scene: buildings activate scene-selective visual cortex independently of visual features

This study shows buildings activate scene-selective visual cortex independently of visual features, with delayed and prolonged responses compared to scene-selectivity.

Discovering flexible codes for prediction across timescales in the retina

This study shows retinal population codes adjust their predictive timescale to input temporal structure using the information bottleneck framework.

Distinct Computational and Temporal Mechanisms Underlie the Joint Effects of Motivation and Working Memory on Perceptual Sensitivity

The paper investigates how motivation and working memory jointly affect perceptual sensitivity using behavioral experiments, computational modeling, and pupillometry, finding independent additive contributions rather than motivational amplification.

Do we understand orientation selectivity? A simulation study

This study shows that current mechanisms for orientation selectivity in the visual cortex fail in realistic models, suggesting homeostatic plasticity may be necessary.

Symmetry and nonlinear-readout criteria for orientation-tuning dynamics in a cortical neural field

The paper develops a neural-field model to distinguish gain and tuning-shape changes in V1 orientation-tuning dynamics using symmetry and nonlinear-readout criteria.

Before the eye moves: microsaccade preparation expands spatial integration at the center of gaze

The paper shows that microsaccade preparation increases foveal crowding by expanding spatial integration at the center of gaze, even when sensitivity to isolated stimuli remains unchanged.

Seeing the world in a grain of sand: Fine global and local representations in foveal and parafoveal vision

The paper shows that fine-global form and fine-local detail are processed in parallel in V1 and preserved through the ventral visual stream for both foveal and parafoveal vision.

A transient signal in foveal superior colliculus neurons when jumpstarting peripheral saccadic orienting

During delayed saccade tasks, macaque foveal superior colliculus neurons burst after the go signal, leading peripheral collicular pauses by 10 ms, independent of target image, saccade direction or reaction time.

Limb-Selective Regions in the Lateral Temporal Lobe Shrink from Childhood to Adulthood

The paper shows limb-selective regions in the lateral temporal lobe shrink from childhood to adulthood, unlike body-selective regions.

Non-invasive mapping of the temporal processing hierarchy in the human visual cortex

This paper develops a method combining fMRI and MEG to non-invasively map the temporal hierarchy of visual processing in the human brain with millisecond precision.

Image-grounded encoding models reveal distinct temporal profiles of naturalistic object and scene processing in the human brain

The paper uses image-grounded encoding models to show that object processing in the human brain has a delayed temporal profile compared to scene processing in natural visual environments.

Dissociable effects of feature expectation on saccades and presaccadic perception

The paper investigates how feature expectation affects saccades and presaccadic perception, finding dissociable effects on sensitivity and saccade latency.

Feature Misbinding Underlying Serial-Order Effects of Visuospatial Working Memory

This study investigates serial-order effects in visuospatial working memory using eye tracking and modeling, finding that location-serial-position misbinding, not variable precision, explains primacy and recency effects.

Dissociating representations of object shape, real-world size, and mobility in human visual cortex

The paper investigates how object shape, real-world size, and mobility are represented in human visual cortex using fMRI and a novel stimulus set that manipulates these dimensions independently.

Mesoscale developmental rivalry in human extrastriate visual cortex

The paper examines mesoscale developmental rivalry in human extrastriate visual cortex by comparing fMRI data from individuals with and without amblyopia, finding that compromised modules are usurped by intact ones.

Hierarchical Optimization predicts Plasticity in the Macaque Inferior Temporal Cortex following Object Training

The paper models plasticity in macaque inferior temporal cortex after object training using ANN simulations, showing gradient descent approximates observed neural changes.

Distinct regimes of spatial prediction across the visual field during natural vision

The paper uses fMRI and deep generative models to show spatial prediction effects across visual cortex during natural vision, revealing distinct prediction regimes in central vs. peripheral vision.

Simultaneous neuron evidence for much higher covariation with saccadic reaction time of superior colliculus than primary visual cortex visual responses

The paper shows that superior colliculus (SC) neuron responses predict saccadic reaction time better than primary visual cortex (V1) responses, especially when multiple neurons are considered.

A new oculomotor model demystifies "Remarkable Saccades"

The paper introduces a new oculomotor model that explains 'Remarkable Saccades' and challenges existing theories of binocular eye movement control.

Generative and discriminative recurrence employ opposing strategies for robust vision

This study compares generative and discriminative recurrence in neural networks, finding they use opposing strategies for achieving robustness in vision.

Stimulus dependent modulation of perceptual filling-in is predicted by the properties of early visual cortex

The paper tests a two-stage model of perceptual filling-in by examining how early visual cortex properties like the oblique effect and surround suppression influence the phenomenon.

Frontal Eye Field Leads a Distributed Oculomotor Circuit for Abstract Categorical Decisions

The paper identifies the frontal eye field (FEF) as leading a distributed circuit for abstract categorical decisions by analyzing neural activity in monkeys during a visual motion-categorization task.

Changes in perceptual sampling contribute to representational drift

The paper shows that changes in gaze behavior over time can induce representational drift in visual cortex by altering neural responses to the same stimuli.

A comparison of sharpening and dampening accounts of the role of expectation in shaping the neural fidelity of early visual representations

This study compares sharpening and dampening theories of expectation's role in visual neural fidelity using fMRI and EEG, finding evidence supporting dampening over sharpening.

Eyes on the prize: Mice deploy task-driven saccades during naturalistic foraging

This study shows that mice use saccades as part of a cognitive strategy during foraging, not just reflexively, and finds their timing reflects processing demands.

Direction and orientation preferences in mouse superior colliculus and its retinal inputs align with topographic axes atop locally mixed tuning

The paper examines direction and orientation preferences in mouse superior colliculus and its retinal inputs, showing they align with topographic axes but show local clustering at small scales.