biofeedback srs

8/2/2019 Biofeedback Srs

1/17

Sreeraj S R

BIOFEEDBACK


2/17

Sreeraj S R

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.


3/17

Sreeraj S R

Every day forms of

biofeedback


4/17

Sreeraj S R

You have to have

accurate feedback, of course!


5/17

Sreeraj S R


6/17

Sreeraj S R

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.


7/17

Sreeraj S R

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.


8/17

Sreeraj S R

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.


9/17

Sreeraj S R

Equipment


10/17

Sreeraj S R

Visual cues

1.Meter read outs2.Flashing lights

3.Oscilloscope

4.Computer screens

Auditory cues

1.Changing tones

2.Clicks


11/17

Sreeraj S R

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


12/17

Sreeraj S R

Features of the BF Devices

Gain settings, low & high

Sound

Threshold Peak Hold facility


13/17

Sreeraj S R

Uses

Facilitate muscle contractions

Promote increased motor recruitment

Regain neuromuscular control Decrease muscle spasm

Promote relaxation


14/17

Sreeraj S R

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


15/17

Sreeraj S R

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


16/17

Sreeraj S R

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


17/17

Sreeraj S R

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

biofeedback srs

Documents