Journal
SCIENTIFIC AND TECHNICAL JOURNAL OF INFORMATION TECHNOLOGIES, MECHANICS AND OPTICS
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Issue:4 (98)
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PROCESSING METHOD DEVELOPMENT OF CONTROL LOW-FREQUENCY SIGNALS FOR THE INTELLECTUAL TRAINER
Annotation
The problem of control signals generating for intellectual trainer intended for the human musculoskeletal system recovery is considered. A method for low-frequency signal processing (frequency 50 Hz) readout from the surface of cerebral cortex has been developed. These signals are connected to the activity of the human brain and, directly, with α- and β-rhythms responsible for limb movements. The proposed method is based on the application of differential functions and Daubechies and Morlaix algorithms for wavelet transforms. To avoid errors occurring during low-frequency signal readout from the surface of cerebral cortex, a modular signal processing is suggested. Research was carried out on 10 male volunteers, who performed hand movement in the course of the experiment staying in a relaxed wakefulness. The findings showed that the proposed method gives the possibility for detecting the amplitude of the control signals from 5 to 15 mV in a frequency range from 10 Hz to 50 Hz. This level of signals makes it possible to adapt them for intellectual trainer control. The results are applicable in medical rehabilitation facilities, as well as in the training of athletes for competitive events.
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