Striate cortex extracts higher-order spatial correlations from visual textures. Academic Article uri icon

Overview

abstract

  • Spatial correlations define the statistical structure of any visual image. Two-point correlations inform the visual system about the spatial frequency content of an image. Higher-order correlations can capture salient features such as object contours. We studied "isodipole" texture discrimination in V1 to determine if higher-order spatial correlations can be extracted by early stages of cortical processing. We made epicortical, local field potential, and single-cell recordings of responses elicited by isodipole texture interchange in anesthetized monkeys. Our studies demonstrate that single neurons in V1 can signal the presence of higher-order spatial correlations in visual textures. This places a computational mechanism, which may be essential for form vision at the earliest stage of cortical processing.

publication date

  • August 30, 1994

Research

keywords

  • Pattern Recognition, Visual
  • Visual Cortex
  • Visual Perception

Identity

PubMed Central ID

  • PMC44630

Scopus Document Identifier

  • 0028064946

Digital Object Identifier (DOI)

  • 10.1073/pnas.91.18.8482

PubMed ID

  • 8078907

Additional Document Info

volume

  • 91

issue

  • 18