Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
15 Cards in this Set
- Front
- Back
|
3 types of stimuli |
Intensity= luminance, contrast, colour temporal= frequency, duration spatial= frequency, size/area, distance, location, depth |
|
|
Depth |
Separation between 2 stimuli located at different distances from the observer (meters) |
|
|
Duration |
Time between two stimuli (secs. or mins.) |
|
|
Luminous power |
Total power produced by surface in ALL directions |
|
|
2 types of responses |
Task= detection, discrimination, recognition, identification, magnitude estimation Domain= threshold, supra threshold |
|
|
Detection |
Judgment of presence or absence |
|
|
Discrimination |
Able to tell the difference of two stimuli |
|
|
Recognition |
Response to a characteristic |
|
|
What psychological method do we use for identification |
Cognitive |
|
|
Magnitude estimation |
Method of scaling. People asked to judge at a subjective experience |
|
|
Visual angle equation |
tanø=h/d h=d*tanø d=h/tanø |
|
|
Contrast |
Measure of luminance difference |
|
|
Weber's contrast |
Cw = (Lt-Lb)/Lb |
|
|
Michaelson's contrast |
Cm = (Lmax-Lmin)/(Lmax+Lmin) |
|
|
Abney's law |
Luminous power is the number of lumens produced at each wavelength Lp=Lwl |
