AP PSYCHOLOGY

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SENSATION AND PERCEPTION

VISION SENSORY AND PERCEPTUAL PROCESSING

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Luisa woke at night in her darkened bedroom. At first she could not see anything, but after a few minutes, due to the ____ in her eyes, she could see the shape of her dressing gown hanging on the door. When she turned on the light she could see the colour of the dressing gown, due to the action of her ____
A
cones, rods
B
rods, cones
C
rods, rods
D
cones, cones
Explanation: 

Detailed explanation-1: -So, the cones are used for color vision and are better suited for detecting fine details. There are about 6 million cones in the human retina.

Detailed explanation-2: -Light passes through the front of the eye (cornea) to the lens. The cornea and the lens help to focus the light rays onto the back of the eye (retina). The cells in the retina absorb and convert the light to electrochemical impulses which are transferred along the optic nerve and then to the brain.

Detailed explanation-3: -The foveal center or ‘foveola’ contains the highest density of cone photoreceptors in the retina. Cone photoreceptors function in bright light and support high acuity and color vision.

Detailed explanation-4: -The rods are photoreceptors that contain the visual pigment-rhodopsin and are sensitive to blue-green light with a peak sensitivity around 500 nm wavelength. Rods are highly sensitive photoreceptors and are used for vision under dark-dim conditions at night.

There is 1 question to complete.
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