Trained arm movements and two-link arm dynamics and control of arm movements model are investigated. It is found that for these movements the component of the movements energy dissipations in the control force potential is invariable during the outer force actions.
Horizontal "extension-flexion" movement of human arm at the elbow joint was studied. Humans performed movements in accordance with the instruction to ignore sudden trajectory changes that arose by the arm during lengthening of different elastic rods with friction. It was shown by multi-dimension regression analysis that the electric activity of biceps and… (More)
Values of interstitial fluid pressure in surface layers of the human brain and of the pressure of the cerebrospinal fluid "bathing" the brain are presented. The results show a difference in these pressures. The analysis with a spherical model shows that intratissue structural (biomechanical) connections, and those between the brain, its membranes and… (More)
The reaction of cerebral electric activity to induced changes in the cerebrospinal fluid pressure during examination of P-V dependence of the craniospinal cavity was appraised in 8 neuro-oncological patients in the postoperative period by means of spectral EEG analysis. Among 41 tests with artificial changes in CSF pressure decrease in CSF pressure was… (More)
Some peculiarities of invisible oscillations of man's body during his standing are reproduced using a mathematical model. The stability of the corresponding dynamic system with two delayed feedbacks and its behaviour in response to irregular and regular effects has been investigated. The results are compared with the experimental data. It is suggested that… (More)