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23 Cards in this Set
- Front
- Back
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Accessory Structures
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A strucure, such as the lens of the eye, that modifies a stimulus.
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Adaptation
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The process through which responsiveness to an unchanging stimulus decreases over time.
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Amplitude
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The difference between the peak and the baseline of a wavelength.
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Auditory Nerve
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The bundle of axons that carries stimuli from the hair cells of the cochlea to the brain to facilitate hearing.
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Basilar Membrane
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The floor of the fluid-filled duct that runs through the cochlea.
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Cochlea
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A fluid-filled spiral structure in the ear in which auditory transduction occurs.
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Coding
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Translation of the physical properties of a stimulus
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Frequency
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The number of complete wavelengths, or cycles, that pass by a given point in space every second.
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Loudness
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A psychological dimension of sound determined by the ampliude of a sound wave
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Pitch
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How high or low a tone sounds
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Primary Cortex
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The area of the cerebral cortex that is first to receive information about a particular sense, such as vision of hearing
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Sensations
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Messages form a sense, which compromise the raw information that affects many kinds of behavior and mental processes.
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Sense
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A system that translates data from outside the nervous system into neural activity giving the nervous system, especially the brain, information about the world.
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Sensory Receptors
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Specialized cells that detecct certain forms of energy.
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Spatial Code
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In the sensory systems, codingg attributes of a stimulus in terms of location of firing neurons relatigve tot their neighbors
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Specific Nerve Enrgies
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A doctrine that states that stimulation of a particular sensory nerve provides codes for that one sense, no matter how the stimulation takes place.
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Sound
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A repetitive fluctuation in the pressure of a medium like air.
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Temporal Code
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In the sensory systems, coding attributes of a stimulus in terms of changes in the timing of neural firing.
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Timbre
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The quality of sound that identifies it, so that, for example a middle c on piano is clearly distinguishable from a middle c played on trumpet.
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Topographical Representation
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A map of each sense contained in the primary cortex. Any two points that are next to each other in the stimulus will be represented next to each other on the brain
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Transduction
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The second step in sensation, which is the process of converting incoming energy into neural activity through receptors.
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Tympanic Membrane
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A tightly stretched membrane, also known as the eardrum, in the middle ear that generates vibrations that match the sound waves striking it.
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Wavelength
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The distance from one peak to the next in a waveform
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