E-stim principles Flashcards
particles of matter possessing a negative charge
electrons
movement of electrons
electrical current
unit of measure that indicates the rate at which electrical current flows
ampere
described in milliamperes or microamperes
current flow
force resulting from an accumulation of electrons at one point in an electrical circuit
voltage
ease with which current flows along a conducting medium
conductance
opposition to electron flow in a conducting material
resistance or impedance
states that the current in a electrical circuit is directly proportional to the voltage and inversely proportional to the resistance
Ohm’s Law
Has an uninterrupted unidirectional flow of electrons toward the positive pole. Direct Current DC
Monophasic
continuous flow of electrons is bidirectional, constantly changing direction or reversing polarity. Alternating Current AC
Biphasic
contains 3 or more pulses grouped together and may be unidirectional or bidirectional.
Pulsatile PC
tissue that is the best electrical conductor
blood
muscle is considered a ____ conductor
good
tendons are more dense than mm and are ____ conductors
poor
fat is considered a _____ conductor
poor
What is the poorest biological conductor?
bone
Negative electrode
cathode
positive electrode
Anode
length of time current is flowing in one cycle
pulse duration
indicates the number of pulses or cycles per second
pulse frequency
refers to any alteration in the amp, duration, or freq of a current
modulation
occurs with PC where biphasic current flows for a short duration and then is turned off for a short time
burst modulation
when two interfering biphasic current waveforms with different freq are delivered through two sets of electrodes (IFC)
Beat modulation
