Orientation discrimination as a function of orientation and spatial frequency
نویسندگان
چکیده
منابع مشابه
Orientation and spatial-frequency discrimination for luminance and chromatic gratings.
We have examined the accuracy of orientation and spatial-frequency discrimination for sine-wave gratings that vary in either luminance or color. The equiluminant chromatic gratings were modulated along either a tritanopic confusion axis (so that they were detectable on the basis of activity in only the short-wavelength-sensitive cones) or an axis of constant short-wavelength-sensitive cone exci...
متن کاملAcademic Achievement as a Function of Goal Orientation and Course Perception Mediated by Academic Self-Regulation
To help with the prediction of school achievement through a mathematical model incorporating goal orientation, course perception, and academic self-regulation, a sample of 380 9th graders in Tabriz was selected using the cluster sampling method. Instruments used to measure these constructs were translated ones. Data analyses showed that goal orientation and course perception have a direct impac...
متن کاملVisual orientation and spatial frequency discrimination: a comparison of single neurons and behavior.
Neurons in the visual cortex respond selectively to stimulus orientation and spatial frequency. Changes in response amplitudes of these neurons could be the neurophysiological basis of orientation and spatial frequency discrimination. We have estimated the minimum differences in stimulus orientation and spatial frequency that can produce reliable changes in the responses of individual neurons i...
متن کاملSound localization in a small passerine bird: discrimination of azimuth as a function of head orientation and sound frequency.
Sound localization is critical to communication when signalers are distributed widely in space and when reverberations that accumulate over distance might otherwise degrade temporal patterns in vocalizations. We readdress the accuracy with which a small passerine bird, the eastern towhee, Pipilo erythrophthalmus L., is able to resolve azimuth in the field. We then report results from two-altern...
متن کاملDetection and discrimination of texture modulations defined by orientation, spatial frequency, and contrast.
We sought to determine whether the detection and the identification of texture modulations are mediated by a common mechanism. On each trial two textures were presented, one of which contained a modulation in orientation (OM), spatial frequency (FM), or contrast (CM). Observers were required to indicate whether the modulated texture was presented in the first or the second interval as well as t...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Perception & Psychophysics
سال: 1987
ISSN: 0031-5117,1532-5962
DOI: 10.3758/bf03208230