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Spatial frequency characteristics of brisk and sluggish ganglion cells of the cat's retina

โœ Scribed by L. N. Thibos; W. R. Levick

Publisher
Springer-Verlag
Year
1983
Tongue
English
Weight
653 KB
Volume
51
Category
Article
ISSN
0014-4819

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โœฆ Synopsis

Receptive fields of cat retinal ganglion cells were stimulated by a drifting sinusoidal luminance pattern of fixed (50%) contrast and the amplitude of the fundamental frequency component of response was determined as a function of spatial frequency. Frequency response functions for most cells were unimodal and skewed towards zero frequency when plotted on linear scales. At a fixed retinal location, cells of different classes had different frequency response functions. Heterogeneity within some of the classes could be largely removed by normalizing the axes, thus, revealing a common shape of function for the class. At a fixed retinal location, the maximum response obtained at each spatial frequency was always obtained from a cell of the brisk, rather than sluggish, classes. Spatial frequency resolution was highest for brisk-sustained cells and usually lowest for brisk transient cells.

๐Ÿ“œ SIMILAR VOLUMES

Orientation bias of brisk-transient y-ce
Orientation bias of brisk-transient y-cells of the cat retina for drifting and alternating gratings
โœ L. N. Thibos; W. R. Levick ๐Ÿ“‚ Article ๐Ÿ“… 1985 ๐Ÿ› Springer-Verlag ๐ŸŒ English โš– 912 KB

Brisk-transient ganglion cells of the cat's retina were examined for orientation bias using two different stimuli: drifting gratings and alternating gratings, both of fixed contrast (50%) and fixed temporal frequency (2 Hz). Some cells were strongly biassed for both stimuli, some were not biassed fo