Biofeedback Flashcards
what is biofeedback
extrinsic feedback
basic description of what biofeedback does
-no estim applied, electrical act of pt’s mus monitored
-provides visual or auditory info about mus act
uses for biofeedback
-arthritis, LBP, post op, stroke
-pelvic floor
-monitor intervention precision
-decrease unwanted mus act
-promote mus act
what type of contraction produces a linear relationship in EMG (electromyography)? less linear?
iso contraction
non-iso or mus fatigue
3 impairments to use BF on
-impaired mus fxn
-mus spasm
-pain
how is signal amplitude controlled
adjusting gain (sensitivity)
define gain
relationship between input signal and output amplitude of amplifier
define sensitivity
greater the amplification, more sensitive device
what setting is the most sensitive
low setting
what duration should the time constant be for relax? recruit wk mus?
long
short
how to choose approp electrodes
-depends on mus size
-big enough electrode w/o overflow from ag or antag
where should ground electrode be placed? what does it do
bony landmark
determines if approp mus act being recorded
what 3 things make good conduction
-medium (US gel)
-skin prep
-electrodes parallel to mus fibers
