AP PSYCHOLOGY

SENSATION AND PERCEPTION

VISION SENSORY AND PERCEPTUAL PROCESSING

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Rods are responsible for ____ and ____ while cones are responsible for ____ and ____
A
colour vision and detail:night vision and peripheral vision
B
night vision and detail; colour vision and peripheral vision
C
night vision and colour vision; colour vision and detail
D
night vision and peripheral vision; colour vision and detail
Explanation: 

Detailed explanation-1: -What is the function of rods and cones in the eye? Rods are responsible for vision at low light levels or scotopic vision. Whereas, the cones are responsible for vision at higher light levels or photopic vision.

Detailed explanation-2: -There are two types of photoreceptors: rods and cones. Rods are responsible for peripheral vision, and are located outside of the central part of the retina. There are some 120 million of them, and they are responsible for night vision, because they are highly sensitive to low-intensity light.

Detailed explanation-3: -The rods are responsible for peripheral and dim light vision and the cones are responsible for high-acuity color vision.

Detailed explanation-4: -Rods are responsible for vision at low light levels (scotopic vision). They do not mediate color vision, and have a low spatial acuity. Cones are active at higher light levels (photopic vision), are capable of color vision and are responsible for high spatial acuity.

Detailed explanation-5: -While the visual acuity or visual resolution is much better with the cones, the rods are better motion sensors. Since the rods predominate in the peripheral vision, that peripheral vision is more light sensitive, enabling you to see dimmer objects in your peripheral vision.

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