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17 terms

Estim

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Direct current
continuous and unidirectional flow of charged particles
Direct current - uses
iontophoresis, stimulating denervated muscles to contract, occasional wound healing
Alternating current
continuous and bidirectional flow of charged particles
Alternating current - uses
muscle contraction, pain management
Pulse current
interrupted flow of current, series of pulses separated by no current flow, may be uni or bi directional
Monophasic
tissue healing, acute edema, high voltage pulsed current
Biphasic asymmetric
muscle contraction of small muscles, pain control with TENS
Biphasic symmetric
muscle contraction of large muscles, pain control with TENS
Interferential Current or IFC
interference of 2 AC's of slightly different frequencies at a 90 degree angle. 2 channels 4 electrodes
Beat frequency
difference between the frequencies of the original AC's
IFC - benefits
pain management, more comfortable, higher current in deeper tissues, stimulates larger area.
Anode
positive pole
Cathode
negative pole
Anion
positive charge
Cation
negative charge
Impedance
total frequency dependent opposition to current flow
Voltage
electrical force moving charged particles through a conductor between two regions or points