Is the Perception of Yellow Color Instantaneous in the Brain?

In summary, the Adelson's Same Color Illusion is an optical illusion that demonstrates that the brain perceives different colors when two different images are presented to the eyes, even when those images are identical in all other ways.
  • #1
Adel Makram
635
15
It is a matter of fact that the perception of the yellow color occurs when the red and green sensitive-cones in human eyes are stimulated. I am interested to know whether this perception of the yellow color at the level of the brain happens instantaneously once the relevant parts of the brain are exited?

For example, let`s put a small white object (such as white LED) in front of eyes, with a red filter in front of one eye and a green filter in front of the other eye. Will the person recognize the color of the object to be yellow just after the optical stimulus reaching the corresponding part of the cerebral cortex, or after a lapse of time that may be required for a sort of communication or comparison of colors between the two cerebral hemispheres?
 
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  • #2
Adel Makram said:
For example, let`s put a small white object (such as white LED) in front of eyes, with a red filter in front of one eye and a green filter in front of the other eye. Will the person recognize the color of the object to be yellow
No. Look up binocular colour rivalry.
 
  • #3
MrAnchovy said:
No. Look up binocular colour rivalry.
Binocular color rivalry works when there are two completely different images presented for two eyes, while my example is the same image presented to the two eyes but in different colors.
So, again my questions:
1) Will the brain percerive a yellow color from two identical images from each eye, one is red and the other is green?
2) Will that perception, if any, be instantaneously once the optical impulses reaching the corresponding area in the two hemispheres?
 
  • #4
Adel Makram said:
Binocular color rivalry works when there are two completely different images presented for two eyes.
No it doesn't
 
  • #5
As far I my knowledge it doesn't.
 
  • #6

1. What causes the perception of yellow color?

The perception of yellow color is caused by the stimulation of specialized cells in the retina called cone cells. These cells are sensitive to different wavelengths of light and when they are stimulated by light in the yellow range (around 570-590 nanometers), they send signals to the brain which then interprets it as the color yellow.

2. Why do some people perceive yellow differently?

Individuals can perceive yellow differently due to variations in their cone cells. Some individuals may have more or less sensitive cone cells for yellow light, leading to a difference in their perception of the color. Additionally, cultural and personal experiences can also influence how someone perceives yellow.

3. How does the brain process the perception of yellow color?

When light enters the eye and stimulates the cone cells, the signals are then transmitted to the brain through the optic nerve. The brain then interprets these signals and combines them with information from other sensory systems to create the perception of yellow. The exact neural pathways and mechanisms involved in this process are still being studied.

4. Can the perception of yellow color change over time?

Yes, the perception of yellow color can change over time. As we age, our eyes and vision may change, leading to differences in how we perceive colors, including yellow. Additionally, certain medical conditions or medications can also affect color perception.

5. Is there a universal perception of yellow color?

While the perception of yellow color is generally consistent among individuals with normal vision, there is some evidence that cultural and personal factors can influence how people perceive yellow. For example, some cultures may have different associations with the color yellow, leading to variations in perception. However, research suggests that the basic mechanisms of color perception are universal among humans.

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