scholarly journals Retinotopic organization of visual cortex in human infants

Neuron ◽  
2021 ◽  
Author(s):  
Cameron T. Ellis ◽  
Tristan S. Yates ◽  
Lena J. Skalaban ◽  
Vikranth R. Bejjanki ◽  
Michael J. Arcaro ◽  
...  
Keyword(s):  
Visual Cortex ◽  
Human Infants ◽  
Retinotopic Organization

scholarly journals Retinotopic organization of visual cortex in human infants

2020 ◽  
Author(s):  
C. T. Ellis ◽  
T. S. Yates ◽  
L. J. Skalaban ◽  
V. R. Bejjanki ◽  
M. J. Arcaro ◽  
...  
Keyword(s):  
Visual Cortex ◽  
Extrastriate Cortex ◽  
Human Infants ◽  
Early Maturation ◽  
Retinotopic Mapping ◽  
Retinotopic Maps ◽  
Spatial Frequencies ◽  
Visual Areas ◽  
Retinotopic Organization ◽  
Perceptual Abilities

AbstractVision develops rapidly during infancy, yet how visual cortex is organized during this period is unclear. One possibility is that the retinotopic organization of visual cortex emerges gradually as perceptual abilities improve. This may result in a hierarchical maturation of visual areas from striate to extrastriate cortex. Another possibility is that retinotopic organization is present from early infancy. This early maturation of area boundaries and tuning could scaffold further developmental changes. Here we test the functional maturity of infant visual cortex by performing retinotopic mapping with fMRI. Infants aged 5–23 months had retinotopic maps, with alternating preferences for vertical and horizontal meridians indicative of area boundaries from V1 to V4, and an orthogonal gradient of preferences from high to low spatial frequencies indicative of growing receptive field sizes. Although present in the youngest infants, these retinotopic maps showed subtle agerelated changes, suggesting that early maturation undergoes continued refinement.

scholarly journals Organization of high-level visual cortex in human infants

2017 ◽  
Vol 8 (1) ◽  
Author(s):  
Ben Deen ◽  
Hilary Richardson ◽  
Daniel D. Dilks ◽  
Atsushi Takahashi ◽  
Boris Keil ◽  
...  
Keyword(s):  
Visual Cortex ◽  
Human Infants ◽  
High Level

Retinotopic organization of striate and peristriate visual cortex in the albino rat

1973 ◽  
Vol 53 (1) ◽  
pp. 197-201 ◽  
Author(s):  
Vicente M. Montero ◽  
Ari´stides Rojas ◽  
Fernando Torrealba
Keyword(s):  
Visual Cortex ◽  
Albino Rat ◽  
Retinotopic Organization

scholarly journals Atypical Retinotopic Organization of Visual Cortex in Patients with Central Brain Damage: Congenital and Adult Onset

2013 ◽  
Vol 33 (32) ◽  
pp. 13010-13024 ◽  
Author(s):  
D. C. Reitsma ◽  
J. Mathis ◽  
J. L. Ulmer ◽  
W. Mueller ◽  
M. J. Maciejewski ◽  
...  
Keyword(s):  
Visual Cortex ◽  
Brain Damage ◽  
Adult Onset ◽  
Central Brain ◽  
Retinotopic Organization

scholarly journals Functional connectivity of visual cortex in the blind follows retinotopic organization principles

Brain ◽  
2015 ◽  
Vol 138 (6) ◽  
pp. 1679-1695 ◽  
Author(s):  
Ella Striem-Amit ◽  
Smadar Ovadia-Caro ◽  
Alfonso Caramazza ◽  
Daniel S. Margulies ◽  
Arno Villringer ◽  
...  
Keyword(s):  
Visual Cortex ◽  
Functional Connectivity ◽  
Retinotopic Organization

scholarly journals Orientation tuning in the visual cortex of 3-month-old human infants

2011 ◽  
Vol 51 (5) ◽  
pp. 470-478 ◽  
Author(s):  
Thomas J. Baker ◽  
Anthony M. Norcia ◽  
T. Rowan Candy
Keyword(s):  
Visual Cortex ◽  
Orientation Tuning ◽  
Human Infants

Reduced spatial integration in the ventral visual cortex underlies face recognition deficits in developmental prosopagnosia

2016 ◽  
Author(s):  
Nathan Witthoft ◽  
Sonia Poltoratski ◽  
Mai Nguyen ◽  
Golijeh Golarai ◽  
Alina Liberman ◽  
...  
Keyword(s):  
Face Recognition ◽  
Visual Cortex ◽  
Face Processing ◽  
Receptive Fields ◽  
Spatial Integration ◽  
Brain Abnormalities ◽  
Neural Basis ◽  
Recognition Ability ◽  
Visual Areas ◽  
Retinotopic Organization

Developmental prosopagnosia (DP) is characterized by deficits in face recognition without gross brain abnormalities. However, the neural basis of DP is not well understood. We measured population receptive fields (pRFs) in ventral visual cortex of DPs and typical adults to assess the contribution of spatial integration to face processing. While DPs showed typical retinotopic organization of ventral visual cortex and normal pRF sizes in early visual areas, we found significantly reduced pRF sizes in face-selective regions and in intermediate areas hV4 and VO1. Across both typicals and DPs, face recognition ability correlated positively with pRF size in both face-selective regions and VO1, whereby participants with larger pRFs perform better. However, face recognition ability is correlated with both pRF size and ROI volume only in face-selective regions. These findings suggest that smaller pRF sizes in DP may reflect a deficit in spatial integration affecting holistic processing required for face recognition.

scholarly journals Retinotopy versus Face Selectivity in Macaque Visual Cortex

2014 ◽  
Vol 26 (12) ◽  
pp. 2691-2700 ◽  
Author(s):  
Reza Rajimehr ◽  
Natalia Y. Bilenko ◽  
Wim Vanduffel ◽  
Roger B. H. Tootell
Keyword(s):  
Visual Cortex ◽  
Nonhuman Primates ◽  
Polar Angle ◽  
Object Categories ◽  
Retinotopic Maps ◽  
Specific Object ◽  
Retinotopic Organization ◽  
Face Selectivity ◽  
Face Stimuli ◽  
Visual Cortical

Retinotopic organization is a ubiquitous property of lower-tier visual cortical areas in human and nonhuman primates. In macaque visual cortex, the retinotopic maps extend to higher-order areas in the ventral visual pathway, including area TEO in the inferior temporal (IT) cortex. Distinct regions within IT cortex are also selective to specific object categories such as faces. Here we tested the topographic relationship between retinotopic maps and face-selective patches in macaque visual cortex using high-resolution fMRI and retinotopic face stimuli. Distinct subregions within face-selective patches showed either (1) a coarse retinotopic map of eccentricity and polar angle, (2) a retinotopic bias to a specific location of visual field, or (3) nonretinotopic selectivity. In general, regions along the lateral convexity of IT cortex showed more overlap between retinotopic maps and face selectivity, compared with regions within the STS. Thus, face patches in macaques can be subdivided into smaller patches with distinguishable retinotopic properties.

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