Somatosensation Flashcards
Adaptation
- Down regulation
2. Cells in your body adapting to a CHANGE in stimulus
Amplification
- Up regulation of some stimulus in the environment
Somatosensory homunculus
map of body in the brain
sensory strip
all the information in your body hits the sensory strip in a particular spot, and the sensory strip reads where that information is coming from
proprioception
our ability to sense where our body is in space; our sense of position; balance; cognitive
kinesthesia
the movement of your body; behavioral
nociception
our sense of pain; capsaicin binds to TrpV1 receptor, triggering same response that a change in temperature would. This is why you start sweating when you eat a hot chili pepper.
thermoception
sense of temperature; rely on TrpV1 receptor;
TrpV1 protein
changes conformation in response to pain and temperature; sends a signal to the brain
fast fibers - A beta fibers
fat in diameter; covered in myelin; both these things allow a signal to travel very quickly
medium fibers - A delta fibers
smaller in diameter; less myelin; conduct a signal slower than fast
slow fiber - C fiber
smallest diameter; no myelin; signal takes a long time to get to your brain