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Psychology Ch 3.7 Vocab
Terms in this set (30)
The smallest amount of energy needed for conscious detection of a stimulus at least 50% of the time.
Occur when a visual sensation persists for a brief time even after the original stimulus is removed.
outer ear; channels sound waves to eardrum
Convergence of axons of the nerve cells adjacent to the hair cells, which then sends neural messages to the auditory cortex (in the temporal lobe)
The spot where the optic nerve attaches to the retina, which contains no rods or cones.
snail-shaped structure that contains the nerve endings essential for hearing
The 6 million receptor cells located mostly in the center of the retina that transduce light waves into neural impulses, thereby coding information about light, dark, and color.
Recovery of the eye's sensitivity to visual stimuli in darkness after exposure to bright lights.
Difference threshold (jsd)
(Just noticeable difference)
The point at which a stimulus is detectable half the time it is present.
At low sound frequencies, receptor cells fire in succession, combining signals to reach higher firing rates.
the theory that the spinal cord contains a neurological "gate" that blocks pain signals or allows them to pass on to the brain. The "gate" is opened by the activity of pain signals traveling up small nerve fibers and is closed by activity in larger fibers or by information coming from the brain.
The sense of taste
Brain ignores a constant stimulus.
our sense of our body's position and movement
Recovery of the eye's sensitivity to visual stimuli in light after exposure to darkness.
The sense of smell
Refers to the neural process of perceiving white as the opposite of perceiving black; similarly, yellow vs. blue, and red vs. green are opponent processes.
The process of organizing and interpreting sensory information, enabling us to recognize meaningful objects and events.
The brain makes sense out of the input from sensory organs.
how high or low a tone sounds
At high sound frequencies, signals are generated at different locations in the cochlea, depending on pitch. The brain reads pitch by reading the location where the signals are coming from.
The 125 million cells located outside the center of the retina that transduce light waves into neural impulses, thereby coding information about light and dark.
The process by which put sensory receptors and nervous system receive and represent stimulus energies from our environment.
The brain receives input from the sensory organs.
Activation of receptors located in the eyes, ears, skin, nasal cavities, and tongue.
The sensory receptors stop responding to a constant stimulus.
sensory systems for processing touch, warmth, cold, texture, and pain
sensory data derived from skin, muscles, and body organs in contrast to that derived from the five special senses
Transforming signals into neural impulses.
Three types of cones-- blue, green and red.
All colors would be perceived as combinations of these three.
the sense of body movement and position, including the sense of balance.
process by which the vertebrate eye changes optical power to maintain a clear image or focus on an object as its distance varies
At ultra high frequencies, receptor cells fire in succession, combining signals to reach higher firing rates.
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