No edit summary |
No edit summary |
||
| Line 17: | Line 17: | ||
[[Category:Eye]] |
[[Category:Eye]] |
||
[[Category:Visual perception]] |
[[Category:Visual perception]] |
||
| − | [[Category: |
+ | [[Category:Psychophysics]] |
Revision as of 19:29, 1 February 2007
Assessment |
Biopsychology |
Comparative |
Cognitive |
Developmental |
Language |
Individual differences |
Personality |
Philosophy |
Social |
Methods |
Statistics |
Clinical |
Educational |
Industrial |
Professional items |
World psychology |
Cognitive Psychology: Attention · Decision making · Learning · Judgement · Memory · Motivation · Perception · Reasoning · Thinking - Cognitive processes Cognition - Outline Index
Contrast sensitivity is the ability to discern between luminosities of different levels in a static image. Contrast sensitivity varies between individuals, maxing out at approximately 20 years of age, and at spatial frequencies of about 2-5 cycles/degree.
The contrast threshold function (CSF), also called the modular transfer function is derived from a graph plotting the relationship between the horizontal axis of spatial frequencies of simple figures (eg a grating, with different sized gaps between the bars) and the vertical axis of a subjects sensitivity to perceiving the fluctuations in luminance across the images.
This is thus the reciprocal of the absolute threshold.