Color vision demonstrations

1

• Color vision demonstrations
• Psych 107, 110A, and Psych 228
• Professor Jack Loomis
• UCSB

2
Spectrum
400 500
600
700
Wavelength (nm)
3
Additive color mixture

4
Hue circle and desaturated colors
5
Following slides demonstrate simultaneous color
contrastObserve that central patch of
achromatic light can take on the complementary
hue of the surround
6
(No Transcript)
7
(No Transcript)
8
(No Transcript)
9
(No Transcript)
10
(No Transcript)
11
(No Transcript)
12
Complementary afterimages fixate dot and
alternate with next slide
13
(No Transcript)
14
Complementary afterimage fixate dot and
alternate with next slide
15
(No Transcript)
16
Hue circle
700
595
extraspectral hues
575
0
560
400
530
475
505
490
17
Opponent axes
18
Following slides illustrate dark colorsFor
best results, view in a completely dark
roomNotice that presence of surround stimulus
alters the appearance of central patches(e.g,
orange becomes brown)
19
(No Transcript)
20
(No Transcript)
21
(No Transcript)
22
(No Transcript)
23
(No Transcript)
24
(No Transcript)
25
(No Transcript)
26
(No Transcript)
27
(No Transcript)
28
(No Transcript)
29
(No Transcript)
30
(No Transcript)
31
Metallic colors
32
Color constancy
33
(No Transcript)
34
(No Transcript)