Term
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Definition
| simple awareness due to the stimulation of a sense organ |
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Definition
| the organization, identification, and interpretation of a sensation in order to form a mental representation |
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Definition
| what takes place when many sensors in the body convert physical signals from the environment int oneural signals sent to the central nervous system |
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Definition
| methods that measure the strength of a stimulus and the observer's sensitivity to that stimulus |
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Definition
| the minimal intensity needed to barely detect a stimulus |
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| just noticeable difference |
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Definition
| the minimal change in a stimulus that can barely be detected |
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Definition
| the just noticeable difference of a stimulus is a constant proportion despite variations in intensity |
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Definition
| an observation that the response to a stimulus depends both on a person's sensitivity to the stimulus in the presence of noise and on a person's response criterion |
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Definition
| sensitivity to prolonged stimulation tends to decline over time as an organism adapts to current conditions |
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Definition
| the ability to see fine detail |
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Definition
| light-sensitive tissue lining the back of the eyeball |
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Definition
| photoreceptors that detect color, operate under normal daylight conditions, and allow us to focus fine detail |
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Definition
| photoreceptors that become active only under low-light conditions for night vision |
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Definition
| an area of the retina where vision is the clearest and there are no rods at all |
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Definition
| an area of the retina that contains neither rods nor cones and therefore has no mechanism to sense light |
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Definition
| the region of the sensory suface that, when stimulated, causes a change in the firing rate of that neuron |
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Definition
| the part of the occipital lobe that contains the primary visual cortex |
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Definition
| a perceptual principle stating that even as aspects of sensory signals change, perception remains consistent |
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Definition
| aspects of a scene that yield information about depth when viewed with only one eye |
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Definition
| the difference in the retinal images of the two eyes that provides information about depth |
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Definition
| the perception of movement as a result of alternating signals appearing in rapid succession in different locations |
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Definition
| how high or low a sound is |
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Definition
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Definition
| a listener's experience of sound quality or resonance |
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Definition
| a fluid-filled tube that is the organ of auditory transduction |
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Definition
| a structure of the inner ear that undulates when vibrations from the ossicles reach the cochlear fluid |
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Definition
| specialized auditory receptor neurons embedded in the basilar membrane |
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Definition
| a portion of the temporal lobe that contains the primary auditory cortex |
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Definition
| the cochlea encodes different frequencies at different locations along the basilar membrane |
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Definition
| the cochlea registers low frequencies via the firing rate of action potentials entering the auditory nerve |
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Definition
| the active exploration of the environment by touching and grasping objects with our hands |
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Definition
| the feeling of pain when sensory information from internal and external areas converge on the same neve cells in the spinal cord |
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Definition
| a theory of pain perception based on the idea that signals arriving from pain receptors in the body can be stopped, or gated, by interneurons in the spinal cord via feedback from two directions |
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Term
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Definition
| three fluid-filled semicircular canals and adjacent organs located next to the cochleaa in each inner ear |
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Term
| olfactory receptor neruons (ORNs) |
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Definition
| receptor cells that initiate the sense of smell |
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Definition
| a brain structure located above the nasal cavity beneath the frontal lobes |
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Definition
| biochemical odorants emitted by other members of their species that can affect an animal's behavior or physiology |
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Definition
| the organ of taste transduction |
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