Organizational properties of second-order visual filters sensitive to the orientation modulations

TL;DR

This psychophysical study investigates second-order visual filters sensitive to orientation modulations, measuring their selectivity to orientation, phase, and spatial frequency, revealing specific bandwidths but no spatial frequency selectivity.

Contribution

The paper provides new insights into the selectivity properties of second-order visual mechanisms, especially regarding orientation and phase, with detailed bandwidth measurements.

Findings

Selectivity to orientation and phase modulations was confirmed.

Bandwidths for phase and orientation were quantified.

No evidence was found for spatial frequency selectivity.

Abstract

Here we show psychophysical study of second-order visual mechanisms sensitive to the orientation modulations. Selectivity to orientation, phase and spatial frequency of modulation is measured. Bandwidths for phase (0,5{\pi}) and orientation (33,75 deg) are defined, but there is no evidence for spatial frequency selectivity.