When the cuff was infl ated to pressures beyond venous pressure butīelow arterial pressure, blood pooling in the lower arm below the cuff Physiologically blood pooling has been induced in the forearm by placingĪ blood pressure cuff around the upper arm of human volunteers. Electrical Impedance Plethysmography (EIP) with tetra The electrical impedance changes from base value Polar electrode system was used to drive a constant current of 3mA atĢ0 KHz into forearm. TwoĪluminum foil current electrodes (I1, I2) and two aluminum foil voltageĮlectrodes (E1, E2) were made and placed on the wrist and above elbow Were observed on digital display of Impedance Plethysmograph. The electrical impedance of the forearm was then The EIP was then connected to the electrodes viaĬonnecting leads. Blood pooling wasĬalculated from base and lowered values of forearm electrical impedance.īlood pooling assessed by EIP was compared by oil fi lled Plethysmograph Recorded without infl ation and with infl ations of cuff.
For OFP measurements, capillary fi tted on the plastic containerĭirectly indicated blood pooling of forearm. Plotted for fi ve sets of experimental data of blood pooling assessed byĮIP and OFP techniques for applied pressures from 0 to 100 mm Hg. Maximum blood pooling found as approximately 10 ml in the forearmĬorresponding to maximum cuff pressure of 100 mmHg. OFP techniques resulted correlation factor of 0.99. Results obtained forĪssessment of blood pooling in the forearm clearly establishes that theĮIP provides assessment of blood pooling noninvasively with noĭiscomfort to the body. Assessment of blood pooling could be used to study arm pain of Useful to design and develop a biofeedback controller for anti G-suit ofġ.
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This case series examines the feasibility, specificity, and preliminary effectiveness of NeuroGame Therapy (NGT) for improving wrist control in four children with cerebral palsy (CP). NGT uses surface electromyographic (sEMG) signals routed through motivating computer games to improve motor control. Primary outcomes of NGT included feasibility (hours of play) and. specificity (changes in sEMG activity during game play).
Secondary outcomes included changes in co-contraction, range of motion, segmental alignment, and spontaneous upper extremity function following intervention. Participants completed a mean of 8.8 hours of NGT over 5-6 weeks. Participants demonstrated dramatic improvement of the sEMG activity during game play.
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