A medical student was doing research in a sensoryneurophysiology laboratory. In preparation for his research, theprincipal investigator of the laboratory asked him to comparethe four basic attributes of a stimulus to sensory receptors. Thefour attributes of sensory coding areA. modality, adequate threshold, sensitivity, and location.B. adequate threshold, receptive field, adaptation, and projection.C. specific energy, adequate threshold, sensation, and duration.D. sensitization, discrimination, energy, and projection.E. modality, location, intensity, and duration
Question
A medical student was doing research in a sensoryneurophysiology laboratory. In preparation for his research, theprincipal investigator of the laboratory asked him to comparethe four basic attributes of a stimulus to sensory receptors. Thefour attributes of sensory coding areA. modality, adequate threshold, sensitivity, and location.B. adequate threshold, receptive field, adaptation, and projection.C. specific energy, adequate threshold, sensation, and duration.D. sensitization, discrimination, energy, and projection.E. modality, location, intensity, and duration
Solution
The four basic attributes of sensory coding are:
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Modality: This refers to the type of stimulus or the sensation it produces. For example, is it light, sound, touch, taste, or smell? Each sensory receptor is designed to respond to a specific modality.
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Location: This refers to the site or area of the stimulus. The brain determines the location of a stimulus by which incoming nerve fibers are carrying the signals.
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Intensity: This refers to how strong the stimulus is. The intensity of a stimulus is coded by the rate of action potentials produced by the sensory receptor.
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Duration: This refers to how long the stimulus lasts. Duration is coded by the duration of the series of action potentials produced by the sensory receptor.
So, the correct answer is E. Modality, location, intensity, and duration.
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