Week 1

Question 1

Pulse Duration

Answer 1

also called pulse width. measured in microseconds

Question 2

Frequency

Answer 2

Rate
number of pulses or cycles in one second
measured in pps or Hz

Question 3

Amplitude

Answer 3

-intensity
magnitude of current
measured in mA (miliamps)
most used in modalities or volts

Question 4

ON-time/OFF-time Duty Cycle

Answer 4

On time (seconds)- the duration where a series pulses and bursts are being delivered.

Off time (seconds)- the duration between those series of pulses and bursts

Percentage of on-time to the total time (on time + off time) x 100%= DUTY CYCLE

Question 5

Modulation

Answer 5

the variation of the stimulation parameters.
limits neural ADAPTATION to electrical current.

changes to ampl. freq. duration or impulses

Question 6

Monopolar electrode configuaration

Answer 6

single circuit where one electrode (TREATMENT/ACTIVE ELECTRODE) is place on tx area, and one placed where therapeutic effect is not desired.

Question 7

Bipolar electrode configuration

Answer 7

-on or near tx area

single circuit, usually same size placed over treatment area

Question 8

quadripolar technique

Answer 8

two sets of bipolar electrodes, each comes from a completely separate channel

Question 9

quadripolar electrode configuration

Answer 9

two separate circuits. electrodes are placed so that the currents are interfered.

(ex. IFC)

Question 10

Resistance/ flow of current ohms law

Answer 10

OHM’s LAW: I= V/R

I: current: amps
V: voltage; volts
R: Resistance: ohms

resistance from: skin hair fascia ligament callus fat bone tendon scar

Question 11

Distance between electrodes

Answer 11

closer together- current travels more superficial

further apart- current travels deeper