Electrical stimulating current Flashcards
name the 4 physiological responses
thermal
chemical
kinetic
magnetic
what happens in the thermal response
rise in temperature of the conducting tissue
what happens in the chemical reponse
using direct current can affect direction of charged ions (tissue healing)
what happens in the kinetic response
muscle contraction
pain modulation
what happens in the magnetic response
potentially promotes wound & bone healing
What are the direct physiological response
under the electrodes
current flow
what are the indirect physiological effects
away from the area of current flow
stimulation causes physiological effects
unequal distribution of ions along the cell membrane =
potential difference between inside & outside the cell
the transmission of an impulse can only happen if what?
If the resting membrane potential is reduced to below a threshold level
Where is the impulse transferred between the effector organ or another nerve cell
a motor endplate OR a synapse
What does the strength duration curve represent
The threshold for depolarization of a nerve fiber
T/F the response of muscles & nerves are all-or-none
true
what type of fibers are for acute pain
A-beta
what type of fibers are recruited for chronic pain
A-delta and C fibers
rank the fibers from most electrical current needed to cause depolarization
A-beta
Motor fibers
A-Delta
C fibers
