In psychophyscial experiments the bright-dark contrast effects observed in a steady test-field were measured as a function of the temporal frequency of an inducing-field modulated symmetrically about the test-field luminance. The frequency-contrast functions obtained from these measurements were int
Temporal aspects of spatial vision in the cat
β Scribed by R. Blake; J. M. Camisa
- Publisher
- Springer-Verlag
- Year
- 1977
- Tongue
- English
- Weight
- 513 KB
- Volume
- 28-28
- Category
- Article
- ISSN
- 0014-4819
No coin nor oath required. For personal study only.
β¦ Synopsis
Using behavioral techniques, contrast sensitivity for flickering and stationary gratings was measured in ordinary cats. Gratings of low spatial frequency were more easily detected by the cat when temporal modulation was present, but at high spatial frequencies temporal modulation reduced grating visibility. These psychophysical results are consistent with neurophysiological evidence for the existence of two classes of visual cells in the cat, which are distinguishable in terms of their spatio-temporal response properties.
π SIMILAR VOLUMES
Single unit activity was recorded in the striate cortex of vision-deprived cats aged between 3 and 8 weeks. Contrast sensitivity or response measurements made using moving sinusoidal gratings were used to construct spatial frequency tuning curves. At 3 weeks sensitivity, selectivity (assessed both a
Ion tracks in solids Monte Carlo simulations Spatial and temporal deposited energy distributions Electron-hole separation and charge distributions a b s t r a c t Spatial and temporal characteristics of energy deposition events and electron-hole distributions as a result of the passage of energetic
## Abstract Seasonal and diurnal patterns produced by the interaction of synoptic scale winds and two thermoβtopographic systems, the land/sea breeze and mountain/plain winds, are investigated in a spatial context. Together with gradient winds and the shallow βlee troughβ northβeasterlies these loc
Visual acuity and contrast sensitivity were measured behaviourally in normal adult cats and cats reared with monocular convergent squint from 3, 6, 8, 12, and 24 weeks of age. The visual acuity of the squinting eye was significantly lower than that of the non-squinting eye in cats with squint from 3