Multiple Choice Identify the
choice that best completes the statement or answers the question.
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1.
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Sensation can be defined as the
a. | process of converting physical energy into neural energy. | b. | detection of the
external stimuli around us. | c. | process of organizing external stimuli into
meaningful concepts. | d. | mental processes necessary to locate and
identify an external stimulus. |
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2.
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Human sensory sensitivity levels
a. | allow us to detect all of the information available in our
environment. | b. | are equal across all senses. | c. | are about as good as is physically possible for
the stimuli to which we are dependent upon. | d. | are far from
optimal. |
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3.
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Researchers have shown that a person can detect a flash of light containing only
100 photons. This is known as our _____ for light.
a. | brightness constancy | c. | difference threshold | b. | just noticeable difference | d. | absolute
threshold |
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4.
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The minimum amount of stimulation required to distinguish one stimulus from
another is called
a. | absolute threshold. | c. | difference threshold. | b. | psychophysical
function. | d. | absolute
difference. |
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5.
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_____ is a process by which the sense organs convert energy from environmental
events into neural activity.
a. | Anatomical coding | c. | Weber's fractionation | b. | Psychophysics | d. | Transduction |
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6.
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The process by which rods and cones convert electromagnetic energy into the
activity of neurons is an example of
a. | transduction. | c. | sensory adjustment. | b. | feature detection. | d. | accommodation. |
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7.
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The psychological experience of a sensory event occurs in the
a. | spinal cord. | c. | brain area which represents the sense. | b. | receptors of the
sense organ. | d. | sense organ
itself. |
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8.
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Coding the intensity of a stimulus by the variability or regularity of neural
firing is known as coding by
a. | transduction. | c. | temporal pattern. | b. | specific neural energies. | d. | neural timing. |
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9.
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Light is what we experience when presented with some types of
a. | mechanical energy. | c. | electromagnetic radiation. | b. | electrochemical
energy. | d. | electrical
impulses. |
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10.
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For the human, visible light is _____ the total electromagnetic spectrum.
a. | a large part of | c. | equal to | b. | a very small part of | d. | not a part of |
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11.
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What is the transparent, protective, outer layer that is first point of the eye
through which light passes as it enters the human eye?
a. | retina | c. | cornea | b. | lens | d. | aqueous humor |
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12.
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In the visual system, transduction takes place in the
a. | ganglion cells. | c. | blind spot. | b. | optic nerve. | d. | rods and cones. |
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13.
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It is easier to detect a dim spot of light (in a dark room) if we don't
look directly at it. Which of the following is the best explanation of this?
a. | The retina's periphery has more rods, and rods are more sensitive than
cones. | b. | A larger part of the retina is stimulated when we "look
away." | c. | The fovea is located in the periphery of the retina. | d. | There is less
interference from the blind spot when we look away. |
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14.
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The process of light adaptation
a. | occurs in the rods first, then the cones. | b. | takes longer for the
rods. | c. | is complete in about one minute. | d. | increases in length as time in the dark
increases. |
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15.
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The purity of light is its
a. | brightness. | c. | wavelength. | b. | saturation. | d. | hue. |
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16.
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The method of using the colors red, blue, and green in color televisions is an
example of
a. | additive color mixing. | b. | subtractive color mixing. | c. | the similarity
between mixing lights and mixing pigments. | d. | saturation and purity of
colors. |
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17.
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The modern analysis of color vision suggests that we have
a. | separate processes for negative afterimages and day-to-day color
vision. | b. | three types of color receptors and opponent-color cells at another
level. | c. | both separate photoreceptors for specific colors and opponent-color cells at the
retina, whose input is combined for integrated color vision. | d. | a primary color
stage in the periphery and a color mixing stage in the central nervous
system. |
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18.
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The highness or lowness of a sound, as determined by the frequency of the sound
waves, is the sound's
a. | intensity. | c. | decibel level. | b. | loudness. | d. | pitch. |
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19.
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After sound waves pass through the auditory canal, they reach the
a. | eardrum. | c. | tunnel of Corti. | b. | middle ear. | d. | oval window. |
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20.
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Nerve impulses are generated in the auditory system when
a. | the eardrum moves the malleus, incus, and stapes. | b. | the basilar membrane
vibrates and moves the hair cells. | c. | the stapes vibrates the oval
window. | d. | sound waves displace the eardrum, causing it to
vibrate. |
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