Marisa Carrasco

Early visual cortex is not functionally necessary for temporal attention: A TMS study

Endogenous attention is invariant to sequential effects in performance around the visual field

The paper reanalyzes data from three studies to assess sequential effects on response and whether endogenous attention modulates performance across visual field locations and trial history, finding no sequential attention effects.

Featural representation and internal noise around the visual field

The paper investigates visual field asymmetries by analyzing feature weighting and internal noise in orientation detection, finding that horizontal-vertical asymmetry is linked to feature processing and noise, while vertical asymmetry is less explained by tested components.

A retinotopic wiring principle of the human brain

The paper shows that structural connectivity in the human visual cortex preserves retinotopic organization, revealing a retinotopic wiring principle and systematic perceptual asymmetries in early visual cortex connectivity.

Visual Field Inhomogeneities and the Architectonics of Early Visual Cortex Shape Visual Working Memory

The paper examines how architectural properties of early visual cortex, particularly visual field inhomogeneities, predict individual differences in visual working memory performance.

Distinct System-Level Computations Underlie Perceptual Variation Across the Visual Field

The paper investigates how system-level computations like gain, noise, and nonlinearity vary with eccentricity and polar angle in human visual perception, revealing distinct mechanisms underlying perceptual differences.

Transcranial magnetic stimulation to frontal cortex, unlike occipital stimulation, does not disrupt exogenous attention

This study uses TMS to show that rFEF+ is not required for exogenous attention, contrasting with V1/V2's role, revealing distinct neural mechanisms for voluntary and involuntary attention.

Dynamic cortical routing mediates temporal attention

This study investigates how temporal attention affects neural communication by routing stimulus information through specific cortical pathways using MEG.

Covert spatial attention is uniform across cardinal meridians despite differential adaptation

This study examines how endogenous and exogenous covert attention affect orientation discrimination at cardinal meridians with and without adaptation, finding uniform effects across meridians despite differential adaptation.

Unpacking the V1 map: Differential covariation of preferred spatial frequency and cortical magnification across spatial dimensions

The paper examines how cortical magnification and preferred spatial frequency in V1 covary with eccentricity and polar angle, finding proportionality in eccentricity but not polar angle.

Visual field asymmetries vary between adolescents and adults

This study shows that horizontal vertical anisotropy (HVA) and vertical meridian asymmetry (VMA) develop gradually during adolescence, reaching adult levels in late adolescence.

Temporal attention and oculomotor effects dissociate distinct types of temporal expectation

The paper investigates how temporal precision and hazard rate expectations interact with temporal attention to affect fixational stability through oculomotor responses.

Asymmetries in foveal vision

This study investigates visual asymmetries in the foveola and finds that perceptual asymmetries persist, with reversed vertical meridian effects compared to more eccentric locations.

Visual adaptation stronger at horizontal than vertical meridian: Linking performance with V1 cortical surface area

The paper investigates how visual adaptation affects contrast sensitivity across meridians and finds stronger adaptation along the horizontal meridian, correlating with V1 cortical surface area.

Eyes on the past: Gaze stability differs between temporal expectation and temporal attention

The paper investigates how temporal expectation and attention affect gaze stability and microsaccade timing, finding that attention consistently improves performance and stabilizes gaze, while preceding foreperiods modulate these effects differently.

Temporal attention amplifies stimulus information in fronto-cingulate cortex at an intermediate processing stage

The paper investigates how voluntary temporal attention enhances visual stimulus representation in fronto-cingulate cortex at an intermediate processing stage, rather than in visual cortex.

How the window of visibility varies around polar angle

This paper investigates how contrast sensitivity function (CSF) attributes vary with polar angle in the visual field using hierarchical Bayesian modeling, finding differences in sensitivity and consistency across meridians.

Anticipatory and evoked visual cortical dynamics of voluntary temporal attention

This study investigates how voluntary temporal attention modulates visual cortical responses using SSVER and MEG, finding both pre-target and post-target mechanisms.

Adaptation and exogenous attention interact in the early visual cortex: A TMS study

Presaccadic attention enhances and reshapes the Contrast Sensitivity Function differentially around the visual field

This study shows presaccadic attention enhances and reshapes the contrast sensitivity function (CSF) across spatial frequencies, with greater effects at horizontal meridians.

Do microsaccades vary with discriminability around the visual field?

This study examines whether microsaccades vary with stimulus discriminability across the visual field and finds they do not adapt flexibly to changes in discriminability.

How spatial attention alters visual cortical representation during target anticipation

This study shows spatial attention alters visual cortex responses before target onset, improving performance at cued locations and changing neural response properties across visual field maps.

Presaccadic attention depends on eye movement direction and is related to V1 cortical magnification

The paper shows presaccadic attention enhances contrast sensitivity for horizontal and downward saccades but not upward, and links this to V1 cortical magnification.

When to attend? Temporal attention interacts with expectation

This study investigates how temporal attention and expectation interact to improve visual performance by manipulating both factors independently.

Featural representation and internal noise underlie the eccentricity effect in contrast sensitivity

The paper investigates how featural representation and internal noise contribute to the eccentricity effect in contrast sensitivity, finding that the fovea has better feature representation and lower noise than perifoveal regions.

Pre-saccadic Preview Shapes Post-Saccadic Processing More Where Perception is Poor

The paper shows that pre-saccadic previews influence post-saccadic processing more in areas of poor peripheral vision, revealing compensation for visual field asymmetries.

Cortical magnification eliminates differences in contrast sensitivity across but not around the visual field

The paper investigates whether cortical magnification affects contrast sensitivity across and around the visual field, finding it eliminates differences across eccentricity but not around polar angle.

Comparing retinotopic maps of children and adults reveals a late-stage change in how V1 samples the visual field

The paper compares retinotopic maps in children and adults, finding that children have similar V1 surface area for upper and lower vertical meridians, while adults show asymmetry, indicating a late-stage developmental change.

Transcranial magnetic stimulation to frontal but not occipital cortex disrupts endogenous attention

This study uses TMS to disrupt activity in rFEF+ and V1/V2 to determine their causal role in endogenous attention, finding that rFEF+ disruption weakens attentional benefits and costs, while V1/V2 disruption does not affect endogenous attention.

Dissociable roles of human frontal eye fields and early visual cortex in presaccadic attention -- evidence from TMS

This paper investigates the causal roles of human frontal eye fields (FEF) and early visual cortex in presaccadic attention using TMS, showing differential effects on perceptual benefits and costs.