4. Somatosensory Integration Flashcards
define somatosensation
the ability to perceive what happens on surface of our boday or within it.
info from skin, muscles and joints
define somatosensory integration
ability of the CNS to integrate different sources of stimuli to create a powerful, motor response output
sensory systems move information from periphery to CNS, where it is used for…
- ## perception• Movement control
• Regulation of internal organs
exteroceptive system
external stimuli, applied to skin
(mechanical, thermal, nociceptive)
e.g. VZV infection -> herpes zoster
propioceptive
info about the position of our body in space
interoceptive system
internal conditions of our own body
kinestasia
info about our own movement
what’s another name for a slowly adapting receptor
tonic receptor
- response persists over time
what’s another name for a rapidly adapting receptor
phasic receptor
- response declines over time
Name some receptor subtypes and their correspondent ski stimulus
Hair follicles Light brush Meissner corpuscle Dynamic deformation Pacinian corpuscle Vibration Merkel cell-neurite complex Indentation depth Ruffini corpuscle Stretch
how does the pacinian corpuscle work?
pressure –> distortion of nerve ending
- creation of action potential
define pain
unpleasant sensory physical or emotional
experience
associated with actual or potential tissue damage
pain is ____________________.
subjective
- pain threshold varies among individuals.
- varies in the same individual at different times
Nociceptive damage: somatic, inflammation, visceral
somatic
inflammation
visceral
Neuropathic damage
nerve damage
