Do the receptive fields in the primary visual cortex span a variability over the degree of elongation of the receptive fields?

ABSTRACT: This paper presents the results of combining (i) theoretical analysis regarding connections between the orientation selectivity and the elongation of receptive fields for the affine Gaussian derivative model with (ii) biological measurements of orientation selectivity in the primary visual cortex to investigate if (iii) the receptive fields can be regarded as spanning a variability in the degree of elongation. From an in-depth theoretical analysis of idealized models for the receptive fields of simple and complex cells in the primary visual cortex, we established that the orientation selectivity becomes more narrow with increasing elongation of the receptive fields. Combined with previously established biological results, concerning broad vs. sharp orientation tuning of visual neurons in t

SUBMITTER: Lindeberg T 

PROVIDER: S-EPMC12417286 | biostudies-literature | 2025 Sep

REPOSITORIES: biostudies-literature