منابع مشابه
The psychophysics of visual search
Most theories of visual search emphasize issues of limited versus unlimited capacity and serial versus parallel processing. In the present article, we suggest a broader framework based on two principles, one empirical and one theoretical. The empirical principle is to focus on conditions at the intersection of visual search and the simple detection and discrimination paradigms of spatial vision...
متن کاملVisual psychophysics
Visual processes in the brain enable us to make sense of the complex, ever-changing array of shapes and colours that arrives at our eyes. Psychophysics is the research strategy that seeks to understand these processes, by testing the relationship between the ‘psychic’ — what an observer sees and reports — and variations in the physical pattern of light and colour. For 19th century pioneers such...
متن کاملVisual Search: A Novel Psychophysics for Preattentive Vision
An important component of visual search is the preattentive guidance of attention towards a target item. The purpose of this investigation is to determine a tuning curve for these guidance mechanisms. The experiments utilize an oriented grating to mask preattentive guidance in a visual search for orientation. By systematically varying the orientation of the grating, we expected to determine the...
متن کاملthe effect of using visual aids on the development of speech act of disagreement among iranian intermediate efl learners
abstract the present study tried to investigate the effect of visual aids (films) on the development of the speech act of disagreement among iranian efl intermediate learners. to this end, the researcher selected 40 homogeneous intermediate learners based on their scores on oxford placement test. .the subjects then divided into control group and experimental group. both classes were tested by ...
Visual Psychophysics in Diabetic Retinopathy
INTRODUCTION Irreversible and severe visual loss may represent the end of long lasting diabetic retin-opathy. The progression of visual impairment and the quantification of final residual visual function are currently determined by means of diagnostic tests which rely on the physiological and mathematical principles of psychophysics. The best known among these tests is the quantification of vis...
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: Vision Research
سال: 2000
ISSN: 0042-6989
DOI: 10.1016/s0042-6989(99)00244-8