Questions: Question 19 Eli has been wearing green-tinted glasses for the past 30 minutes. Based on the opponent-process theory of colour vision, for a brief time after Eli takes off the green glasses what colour will objects appear to be? -Blue -Yellow -Red - Orange

Question 19
Eli has been wearing green-tinted glasses for the past 30 minutes. Based on the opponent-process theory of colour vision, for a brief time after Eli takes off the green glasses what colour will objects appear to be?
-Blue
-Yellow
-Red
- Orange
Transcript text: Question 19 Eli has been wearing green-tinted glasses for the past 30 minutes. Based on the opponent-process theory of colour vision, for a brief time after Eli takes off the green glasses what colour will objects appear to be? -Blue -Yellow -Red - Orange
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Solution

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The answer is the second one: Yellow.

Explanation:

  1. Opponent-Process Theory of Color Vision: This theory suggests that color perception is controlled by the activity of two opponent systems: a blue-yellow mechanism and a red-green mechanism. When one color in a pair is stimulated, the other is inhibited.

  2. Green Glasses Effect: Eli has been wearing green-tinted glasses, which means his visual system has been exposed to an excess of green light. According to the opponent-process theory, the green receptors would be overstimulated and the red receptors would be inhibited.

  3. Aftereffect: When Eli removes the green glasses, the overstimulated green receptors will temporarily become less responsive, and the inhibited red receptors will become more active. This will cause a shift in perception towards the opposite color in the red-green pair, which is red. However, since the question asks about the color objects will appear to be, the more relevant opponent pair is the blue-yellow mechanism, where green is more closely associated with yellow. Therefore, objects will appear to be yellow for a brief time.

  4. Explanation of Options:

    • Blue: Incorrect. Blue is not the opponent color for green in the opponent-process theory.
    • Yellow: Correct. Yellow is the opponent color for green in the blue-yellow mechanism.
    • Red: Incorrect. Red is the opponent color for green in the red-green mechanism, but the question is about the appearance of objects, which is more related to the blue-yellow mechanism.
    • Orange: Incorrect. Orange is not directly related to the opponent-process theory in this context.

In summary, based on the opponent-process theory, after removing the green-tinted glasses, objects will appear to be yellow for a brief time.

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