Tutorial title - Somatosensory System
5 important questions on Tutorial title - Somatosensory System
State the 3 levels of the somatosensory system. Which is made up of sensory receptors, ascending pathways and circuits in the cerebral cortex?
Circuit level - ascending pathways
Perceptual level - circuits in the cerebral cortex
Why is the somatosensory system organised into receptor, circuit and perceptual levels?
In the pathway for sensory (afferent) division where does the impulse come from and where does it go? From what locations do somatic and visceral nerve fibers bring impulses from?
Somatic afferent fibers (from skin, skeletal muscles and joints)
Visceral afferent fibers (internal organs)
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What are receptive fields? What are the 2 kinds of combination of receptive fields that you can have?
Small receptive fields w/ high detail (finger receptors)
Large receptive fields w/ low detail (back receptors)
What is 2 point discrimination threshold? What does it measure?
It measures touch sensitivity and spatial detail.
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