Sensitivity to spatial phase

TL;DR: A simple and biologically plausible model of how mammalian visual systems could detect and identify features in an image is presented and it is suggested that the points in a waveform that have unique perceptual significance as ‘lines’ and ‘edges’ are the points where the Fourier components of the waveform come into phase with each other.

TL;DR: The results show that a 1.5 octave bandpass-filtered image contains sufficient visual information for good recognition performance, provided the filter is centred close to 20 cycles facewidth−1.

TL;DR: It is proposed that the extended temporal summation observed for dots in motion results from summation of energy of low spatial frequency present in these stimuli.

TL;DR: In this paper, a test window (134) is superimposed over the background (130) and includes a test pattern (132) with a contrast and a spatial frequency, which simulate the visual cortical movement system of the subject.

TL;DR: An improved version of the well-known interference fringe technique which theoretically allows a sinusoidal pattern of very high contrast to be formed directly on the retina to be obtained without prior modification by the optics of the eye is reported.

TL;DR: A simple and efficient method of estimating points on the psychometric function, and thus of estimating absolute and difference limens, is described.

TL;DR: Frequency-of-seeing and sensitivity-duration curves were collected for temporal signals of limited spectral extent and suggest that a stimulus is detected whenever the excursions of its linearly filtered, noise-perturbed temporal waveform exceed some fixed magnitude.

TL;DR: A photoelectric analog of the visual system is constructed in conformance with anatomical data, in the form of a color television camera chain feeding electrical signals to a “computer” (the brain).