Ernest Weber provided a formulation that is used to determine the ________. |
smallest detectable difference between two stimuli |
The lowest stimulus intensity required for detection is the ________ and the smallest noticeable difference between a standard stimulus intensity and another stimulus value is the ________. |
absolute threshold; just noticeable difference |
In nerve hearing impairment, the problem lies in ________. |
either the inner ear or the auditory pathways and cortical areas of the brain |
The point at which a person can detect a stimulus 50 percent of the time it is presented is called the ________. |
absolute threshold |
Laverne looks at the tongue of her friend and sees all kinds of bumps on her tongue. "Girl," she says, "you sure have a lot of ________." |
papillae |
The term just noticeable difference is synonymous with ________. |
difference threshold |
Flavor arises from: |
taste and smell. |
The human olfactory system contains about ________ olfactory receptors. |
10,000,000 |
Each olfactory receptor cell has a half dozen to a dozen little hairs that project out. These are called ________. |
cilia |
The sense of smell is also known as ________. |
olfaction |
An olfactory stimulus travels from receptor to ________. |
olfactory bulb |
The kinesthetic senses are concerned with ________. |
the location of body parts in relation to each other |
Hair follicle nerve endings respond to ________. |
pain and touch |
Which is the best description of the vestibular senses? |
They have to do with movement and body position. |
You hit yourself with a hammer and later suffer a deep ache. This is an example of ________. |
somatic pain |
The smallest amount of a particular stimulus required to produce any sensation at all in the person to whom the stimulus is presented is the ________. |
absolute threshold |
Psychological aspects of pain perception can influence the release of the neurotransmitters called ________, the body’s natural version of morphine. |
endorphins |
Closing your eyes and then touching your nose with your forefinger most accurately |
kinesthetic sense |
The reason that there are three semicircular canals is so that ________. |
we have one canal to sense motion in each of the three planes |
A piece of paper looks white in both the noonday sun and under moonlight, even though there is less light being reflected off the paper under moonlight. This form of perceptual constancy is called ________. |
brightness constancy |
Figure is to ground as ________. |
characteristics are to background |
The tendency to complete figures that are incomplete is known as ________. |
closure |
We can see a candle flame at 30 miles on a clear, dark night, and we can hear the tick of a watch 20 feet away in a quiet room. These two facts are examples of ________. |
absolute thresholds |
Visual distance and depth cues that require the use of both eyes are called ________. |
binocular cues |
An illusion ________. |
is a perception that does not correspond to reality |
The Müller-Lyer illusion exists in cultures in which there are ________. |
buildings with lots of corners |
The best explanation of the moon illusion is ________. |
the apparent distance hypothesis |
People’s tendency to perceive a thing a certain way because their previous experiences or expectations influence them is called ________. |
perceptual expectancy |
Suppose you’re driving on a two-lane road on a very snowy night where the divider cannot be seen. However, in your mind, you’re able to reconstruct where the divider should be. This example illustrates ________. |
top-down processing |
Bottom-up processing is initiated by ________. |
the stimulus |
One problem with Vicary’s study of subliminal perception is that ________. |
it never happened |
In the process known as ________, sensory receptors become less sensitive to repeated presentations of the same stimulus. |
sensory adaptation |
The shortest wavelengths that we can see are experienced as ________ colors. |
blue |
The longest wavelengths we can see are experienced as ________ colors. |
red |
The wavelength of the light reaching your eyes determines in part what ________ you see. |
hue |
Jamie, a toddler, is making distinctions about various aspects of color in terms of whether it looks red, blue, and so on. In doing so, she is referring to its ________. |
hue |
The change in the shape of the lens in order to focus on a visual image is known as ________. |
visual accommodation |
Which component of the eye contains the visual receptors? |
retina |
Bundles of axons from ganglion cells make up the ________. |
optic nerve |
If an artist were to blend red, green, and blue lights together by focusing lights of those three colors on one common spot, the result would look ________. |
like white light |
The idea that the eye contains separate receptors for red, green, and blue is known as the ________ theory. |
trichromatic |
Helmholtz’s explanation of color vision is called the ________. |
trichromatic theory |
Which neural structures show color opponent processing? |
retinal bipolar and ganglion cells and lateral geniculate cells in the thalamus |
Amy’s school records describe her as a monochromat. What can we assume about Amy’s perceptual abilities? |
She does not see color. |
John Russell has color blindness. He is most likely to have difficulty doing which of the following? |
distinguishing red from green |
Why do researchers believe color deficiencies often have genetic causes? |
More males than females suffer from color deficiencies. |
Pitch is to frequency as ________. |
loudness is to amplitude |
Which of the following are the auditory receptors where sound waves finally become neural impulses? |
hair cells |
Which of the following describes what happens if you trace an auditory stimulus from the time it first reaches the ear until it arrives at the brain? |
The outermost part of the ear (pinna) gathers sound waves and funnels them down the auditory canal striking the eardrum. |
Fluid located in the cochlea is set in motion and causes vibration in the ________. |
basilar membrane |
Psychology Ch 3
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