Question

According to the opponent-process theory, cells that are turned "on" by _______ light are turned "off" by _______ light?

1) green light, blue light
2) red light, blue light
3) green light, red light
4) yellow light, red light

Answer 1

In the opponent-process theory of color vision, cells excited by green light are inhibited by red light, making the correct answer option 3) green light, red light.

Step-by-step explanation:

According to the opponent-process theory of color vision, certain cells in the visual system are excited by specific colors and inhibited by their 'opponent' colors. Within this theory's framework, color is coded in opponent pairs, namely black-white, yellow-blue, and green-red. When cells stimulated by green light are inhibited by red light, it means that these cells are turned 'on' by green light and turned 'off' by red light. Therefore, the correct answer is option 3) green light, red light.