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Chapter 4: Sensation - Flashcards

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Class:PSYC 100 - Intro Psych
Subject:Psychology
University:University of Illinois - Urbana-Champaign
Term:Spring 2010
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Sense A System that translates information from outside the nervous system into neural activity, which provides the brain with information about the environment.
Sensations Messages from the senses that provide a link between the self and the world outside the brain.
Accessory Structures Modify sensory stimuli prior to transduction.
Transduction The process whereby receptors translate stimulus energy into neural energy that the brain can interpret
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Sensory Receptors Specialized cells that detect certain types of energy (such as light or sound) and convert it into neural energ through transduction
Adaptation When constant stimulus is applied to the body. Initially, the receptors in the skin fire rapidly but their activitly decreases over time.
Coding the conversion of an item's physical features into a specific pattern of neural activity, which represents those features in the brain.
Doctrine of specific nerve energies States that each sensory nerve has a specific sensation associated with it and that these specific sensations will occur no matter how the nerve is stimulated
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Temporal codes Codes based on the timing of neural activity. The speed with which neurons fire becomes a code.
Spatial codes Based on the location of the neural activity. Two messages that are sent in neurons that are next to each other thll the brain that both stimuli occurred very close to each other
Sound repetative change in the pressure of a medium such as air. (represented in waveform)
Amplitude Difference in air pressure between the top of the wave and the baseline of the wave. Loudness is determined by the ______ of the sound wave.
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Wavelength The distance from one peak to the next in the wave. Related to frequency; the longer the wavelength, the lower the frequency or pitch of the sound Remember: Long wavelength and Low pitch (both start with L)
Frequency The number of complete waves that pass a given point in space in one second. As frequency increases, so does the pitch. Hertz (Hz)
Loudness
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 SenseA System that translates information from outside the nervous system into neural activity, which provides the brain with information about the environment.
 SensationsMessages from the senses that provide a link between the self and the world outside the brain.
 Accessory StructuresModify sensory stimuli prior to transduction.
 TransductionThe process whereby receptors translate stimulus energy into neural energy that the brain can interpret
 Sensory ReceptorsSpecialized cells that detect certain types of energy (such as light or sound) and convert it into neural energ through transduction
 AdaptationWhen constant stimulus is applied to the body. Initially, the receptors in the skin fire rapidly but their activitly decreases over time.
 Codingthe conversion of an item's physical features into a specific pattern of neural activity, which represents those features in the brain.
 Doctrine of specific nerve energiesStates that each sensory nerve has a specific sensation associated with it and that these specific sensations will occur no matter how the nerve is stimulated
 Temporal codesCodes based on the timing of neural activity. The speed with which neurons fire becomes a code.
 Spatial codesBased on the location of the neural activity. Two messages that are sent in neurons that are next to each other thll the brain that both stimuli occurred very close to each other
 Soundrepetative change in the pressure of a medium such as air. (represented in waveform)
 AmplitudeDifference in air pressure between the top of the wave and the baseline of the wave. Loudness is determined by the ______ of the sound wave.
 WavelengthThe distance from one peak to the next in the wave. Related to frequency; the longer the wavelength, the lower the frequency or pitch of the sound


Remember: Long wavelength and Low pitch (both start with L)
 FrequencyThe number of complete waves that pass a given point in space in one second. As frequency increases, so does the pitch.
Hertz (Hz)
 Loudness 
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