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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photoreceptors change electromagnetic energy into electrochemical energy.
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photoreceptors change electrochemical energy into electromagnetic energy.
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sensory information is sent to the brain via the optic nerve.
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incoming sensory information is given meaning.
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Detailed explanation-1: -Phototransduction is the conversion of light into a change in the electrical potential across the cell membrane. This process involves the sequential activation of a series of signaling proteins, leading to the eventual opening or closing of ion channels in the photoreceptor cell membrane.
Detailed explanation-2: -Visual transduction is the process in the eye whereby absorption of light in the retina is translated into electrical signals that ultimately reach the brain.
Detailed explanation-3: -Color vision starts with the absorption of light in the retinal cone photoreceptors, which transduce electromagnetic energy into electrical voltages. These voltages are transformed into action potentials by a complicated network of cells in the retina.
Detailed explanation-4: -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.