Man undergoing biofeedback therapy,showing him seated with electrodes attached to his head,viewing squares of coloured light. Biofeedback is a technique whereby an auditory or visual stimulus follows on from a physiological response. For example the electrodes might be used to measure the man's pulse rate,and the value of different rates indicated by means of coloured lights; this may allow him to control his heart rate by distinguishing between the different colours. How the technique works is unclear,but it is claimed that it can control pulse rate & blood pressure,relax spastic muscles and also control migraine (severe headache) attacks | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Dohrn, Martin |
Bildgröße: | 3782 px × 2480 px |
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