Lecture #6 (Biofeedback) Flashcards
What cues does biofeedback give the patient about their performance?
Visual and auditory cues.
What is the primary use of biofeedback?
To develop greater voluntary neuromuscular control of a muscle.
What is EMG?
(Electromyography) –the recording of electrical activity generated in the muscle for diagnostic purposes.
What is the definition of biofeedback?
Information provided from some measuring instrument about a specific biological function (in this case muscle).
What is the definition of feedback?
Intrinsic information inherent to movement (i.e. kinesthetic, visual, cutaneous, vestibular, and auditory signals).
What are four small changes that can be made with biofeedback?
Dexerity, coordination, muscle re-ed, and rehab.
What are three large changes that can be made biofeedback?
Strength, agility, and reduce injury.
What do biofeedback units measure? (x4)
Skin temp, finger phototransmission, skin conductance activity, and electromyographic activity.
What is the strength (amount of tension) of a muscle contraction dependent upon?
The number of motor units recruited.
What patients are the ones that usually get to use biofeedback?
Those who score poorly on manual muscle testing.
What unit is the electrical activity of a muscle measured in?
Microvolts
What is the importance of the reference electrode?
It detects and eliminates the “noise” from the skin and environment.
What is the CMRR?
(Common mode rejection ratio)- the difference between the active electrodes that is measured.
How should the electrodes be placd?
Parallel to the muscle fibers and in the muscle belly.
What is the typical treatment setup for muscle re-ed?
6-10 second contractions for 5-10 minutes.
