1. We studied how responses to visual stimuli at spatially separated locations were
combined by cat retinal ganglion cells. 2. The temporal signal which modulated the stimuli …

1. Variation in stimulus contrast produces a marked effect on the dynamics of the cat retina.
This contrast effect was investigated by measurement of the responses of X and Y ganglion …

1. A model is proposed for the effect of contrast on the first‐order frequency responses of cat
retinal ganglion cells. The model consists of several cascaded low pass filters ('leaky …

The spatio‐temporal characteristics of cat retinal ganglion cells showing linear summation
have been studied by measuring both magnitude and phase of the responses of these cells …

1. Nonlinearity of spatial summation in areas 17 and 18 of cat visual cortex was compared
with the type of spatial nonlinearity that differentiates X and Y cells in the lateral geniculate …

1. The interaction between the center and surround mechanisms of a variety of rabbit retinal
ganglion cell classes was examined in extracellular single-unit recordings in an isolated …

This paper is about a phenomenon, and a mechanism to explain the phenomenon. The
observation is that the dynamic transfer properties of the cat retina are altered when the …

The classification of cat retinal ganglion cells as X or Y on the basis of linearity or
nonlinearity of spatial summation has been confirmed and extended. Recordings were taken …

1. The mechanism which makes Y cells different from X cells was investigated. 2. Spatial
frequency contrast sensitivity functions for the fundamental and second harmonic responses …

We investigated receptive field properties of cat retinal ganglion cells with visual stimuli
which were sinusoidal spatial gratings amplitude modulated in time by a sum of sinusoids …