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10 terms

somatosenses

Psychology 100 Course Cram Notes
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somatosenses
body senses that include our ability to touch, feel pain, warmth and changes in our body posture and movement.
free nerve endings
Sensory receptor cells in the skin that detect pressure, temperature, and pain.
two point discrimination threshold
the minimum distance that must exist between two points for them to be perceived as separate stimuli.
phantom limb pain
occurs when a limb is lost, yet the sensation of pain in the limb still remains
Internal senses
the body contains sensory cells outside of the skin, including the gut, brain, bones, and muscles.
muscle spindles
provide sensory information regarding the degree to which muscle cells are stretched.
Vestibular senses
the senses of equilibrium and body position in space
vestibular apparatus
in the inner ear, allows for the detection of changes in the acceleration in three dimension.
Three semicirular canals
one for each dimension (up/down, left/right, forward/back). Change in movement causes fluid inside the canal to move, activating cells inside.
vestibular sacs
uses crystal-filled fluids to detect the tilt of the head.