SENSATION AND PERCEPTION
VISION SENSORY AND PERCEPTUAL PROCESSING
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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light; be transmitted to the visual cortex of the brain
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electrochemical energy; be transmitted to the visual cortex of the brain
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light; enter the eye
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electrochemical signals; be transduced into electromagnetic energy
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Detailed explanation-1: -Physiologically, visual perception happens when the eye focuses light on the retina. Within the retina, there is a layer of photoreceptor (light-receiving) cells which are designed to change light into a series of electrochemical signals to be transmitted to the brain.
Detailed explanation-2: -First, light passes through the cornea (the clear front layer of the eye). The cornea is shaped like a dome and bends light to help the eye focus. Some of this light enters the eye through an opening called the pupil (PYOO-pul). The iris (the colored part of the eye) controls how much light the pupil lets in.
Detailed explanation-3: -Visual processing and, ultimately, visual fields begin in the retina. Light enters the eye; passes through the cornea, anterior chamber, lens, and vitreous; and finally reaches the photoreceptor cells of the retina. Light activates these photoreceptors, which modulate the activity of bipolar cells.