sensory processes Flashcards
means by which nervous system recieves information from internal environment
interoreception
means by which nervous system recieves information from external environment
exteroreception
means by which the nervous system recieves information from the position and movement of the body
proprioreception
conscious preception of sensory stimuli and generally involves the cerebral cortex
sensation
receptors that receive sensory information and convert to electrical activity
transduction
what two things could communicate with the afferent neuron in sensory receptors
dendrite or a scpecialized cell (vision, hearing, etc.)
if membrane channels are opened, resluting in in changes in membrane potential
ionotropic
if g-coupled protein receptors interact with the stimuli to trigger a secondary messenger cascade
metabotropic
receptors that are at the ends of afferent neurons
touch receptors
touch receptors that stretch activated channels
ionotropic
4 types of nerve endings
merkel disks: form and texture (shallow)
ruffini ending: pressure (deep)
meissner’s corpuscle: sensitive touch (shallow)
pascinian corpuscle: pressure (deep)
another word for taste
gustation
taste receptors
taste cells clustered to form buds
5 taste sensations
bitter salty sweet sour bitter umami
salty and sour: ionotropic or metabotropic
ionotropic