Is the Perception of Yellow Color Instantaneous in the Brain?

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    Color Perception
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Discussion Overview

The discussion centers on the perception of yellow color in the brain, specifically whether this perception occurs instantaneously when the relevant brain areas are activated. Participants explore the implications of presenting a white object with red and green filters to each eye and how this affects color recognition and processing in the brain.

Discussion Character

  • Exploratory
  • Debate/contested
  • Conceptual clarification

Main Points Raised

  • One participant asserts that the perception of yellow occurs when red and green sensitive cones are stimulated, questioning the timing of this perception in the brain.
  • Another participant introduces the concept of binocular color rivalry, suggesting it may not apply to the scenario presented, as the same image is viewed with different color filters.
  • Further clarification is sought on whether the brain can perceive yellow from identical images presented to each eye with different color filters and whether this perception is instantaneous.
  • Some participants express uncertainty about the simplicity of color perception, referencing examples that challenge straightforward interpretations.

Areas of Agreement / Disagreement

Participants exhibit disagreement regarding the application of binocular color rivalry to the scenario described. There is no consensus on whether the perception of yellow is instantaneous or how the brain processes the color information from the two hemispheres.

Contextual Notes

Participants note that the discussion involves complex interactions between visual stimuli and brain processing, with references to specific examples that illustrate potential limitations in understanding color perception.

Adel Makram
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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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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.
 
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?
 
Adel Makram said:
Binocular color rivalry works when there are two completely different images presented for two eyes.
No it doesn't
 
As far I my knowledge it doesn't.
 

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