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

ABSTRACT: Primary visual cortex (V1) has long served as a model system for understanding cortical organization. Although its structural and functional properties vary markedly across its surface, patterns of covariation suggest possible underlying constancies. Such constancies would imply that V1 is composed of multiple identical units whose visual properties differ only due to differences in their inputs. To test this, we used fMRI to investigate how V1 cortical magnification and preferred spatial frequency covary with eccentricity and polar angle, measured in 40 observers. V1 cortical magnification and preferred spatial frequency were strongly correlated across eccentricity and around polar angle, however their relation differed between these dimensions: they were proportional across eccentricity

SUBMITTER: Himmelberg MM 

PROVIDER: S-EPMC12585101 | biostudies-literature | 2025 Oct

REPOSITORIES: biostudies-literature