3. DEFINITION
It is based on the idea that physiological
functions (e.g., B.P., HR., muscle tension,
etc...) which are not controlled voluntarily
can be brought under voluntary control
through operant conditioning if a person is
provided with feedback information about
these functions.
4. Method
Information from measuring devices (e.g..
B.P., skin temperature or galvanic response,
EMG, EEC ...) is transformed by
electronic instruments into signals that
can be perceived by the patient (e.g.. a
sound or flashing light).
On receiving these signals, the person can
be trained to control those functions and
reach a related euthymic mental state.
6. Indications of biofeedback
It is used in the management of many
psychosomatic conditions including
hypertension,
arrhythmias,
migraine,
tension headache,
8. TYPES OF BIOFEEDBACK
Therapist might use several different
biofeedback methods.
Brainwave.This type of method uses scalp
sensors to monitor your brain waves
using an electroencephalograph (EEG).
10. Heart rate.
This type of biofeedback uses finger or
earlobe sensors with a device called a
photo plethysmograph or sensors placed
on your chest, lower torso or wrists
using an electrocardiograph (ECG) to
measure your heart rate and heart rate
variability.
11. Muscle.
This method of biofeedback involves
placing sensors over your skeletal muscles
with an electromyography (EMG) to
monitor the electrical activity that causes
muscle contraction.
12. Sweat glands.
Sensors attached around your fingers or on
your palm or wrist with an
electrodermograph (EDG) measure the
activity of your sweat glands and the
amount of perspiration on your skin,
alerting you to anxiety.
13. Temperature.
Sensors attached to your fingers or feet
measure your blood flow to your skin.
Because your temperature often drops
when you're under stress, a low reading
can prompt you to begin relaxation
techniques.
14. A PHOTOPLETHYSMOGRAPH (PPG)
measures the relative blood flow through
a digit using a photoplethysmographic
(PPG) sensor attached by aVelcro band
to the fingers or to the temple to
monitor the temporal artery