Download - Biofeedback Srs
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BIOFEEDBACK
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Definition
..a method of controlling a system byreinserting into it the results of its past
performance.
1.information is detected,2.provided in an understandable way to the
patient who can then, at their own
initiation,3.use the information to achieve a measure
of control over the same process.
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Every day forms of
biofeedback
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You have to have
accurate feedback, of course!
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A simple device to providefeedback to ensure
quality, and precision in
exercise performance and
testing.
Monitors position of the
low back and provides
feedback when the
abdominal muscles arenot actively or effectively
protecting the spine.
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BF as a component of treatment
should be integrated with other therapeuticinterventions
an enhancer of the therapy
reduce their reliance on the therapist gain control without reliance on the
therapist,
and once gained,
to maintain control without either the
therapist or the machine.
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Working
A biofeedback loop. Here the forearm muscles are monitored
to provide a visual readout to the user. The feedback loop is
completed when the user alters her muscle tension to adjust
the readout.
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Equipment
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Visual cues
1.Meter read outs2.Flashing lights
3.Oscilloscope
4.Computer screens
Auditory cues
1.Changing tones
2.Clicks
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Electrode Placement
Silver/Silver Chloride
construction
judicious electrode
placement
electrode spacing
Noise/ movement
artefact
active electrodesshould be placed in
parallel with the
dominant muscle
fibres
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Features of the BF Devices
Gain settings, low & high
Sound
Threshold Peak Hold facility
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Uses
Facilitate muscle contractions
Promote increased motor recruitment
Regain neuromuscular control Decrease muscle spasm
Promote relaxation
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Indications Stroke
Spinal cord injury Recovering and improving muscle action
Chronic musculoskeletal injury
Pain
Posture control
Balance and mobility
Trunk muscle re education
Respiratory muscle controle Stress related conditions
Hypertension
Idiopathic Raynauds disease
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Contraindications
If the patient is prohibited from moving thejoint or isometric contractions, then BFshould NOT be used
Unhealed tendon grafts Avulsed tendons
Third degree tears of muscle fibers
Unstable fracture Injury to joint structure, ligaments, capsule,
or articulating surface
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Technique for Motor Recruitment
Position pt. Explain to pt. Work in quiet area.
Apply sensors to an area to demonstrate the desired A-V
signal and activity.
Adjust to the most sensitive level that picks up any MUAP
that pt. Can produce
Instruct pt. To try to produce an A-V signal
As voluntary m activity improves, the A-V signal will
increase. Adjust the gain to decrease the sensitivity, so
pt. Has to work harder to recruit more mu.
As pt. Masters in one position, change positions
Document all parameters. Tx duration 30-60 min
Clean up
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Inhibition of Spasticity
Goal: decrease undesirable m activity that may be
interfering with functional movement.
Eval spasticity, Explain to pt. Apply sensors and
demonstrate desired activity.
Find the least sensitive setting that produces minimal A-Vfeedback
Have pt relax, use techniques and have pt. lower the A-V
signal.
As the signal decreases, lower the shaping controls(gain),to a more sensitive level. As pt. relaxes better, continue to
increase sensitivity
Change positions