Surgery – Truss – Pad
Patent
1993-11-24
1995-09-19
Sykes, Angela D.
Surgery
Truss
Pad
A61B 50482
Patent
active
054508541
ABSTRACT:
An alpha-wave amplitude selector with a window slicer quickly selects and detects a time domain in which the amplitude of alpha component in brain waves exceeds or falls below a given threshold levels for use in biofeedback. A combination of a window slicer that receives alpha wave as input and an RS flip-flop connected to the window slicer significantly reduces a time-delay between a point at which the amplitude of alpha wave exceeds or falls below a preset level and a point at which a feedback stimulus is given. The window slicer outputs a high pulse when the alpha wave exceeds a high threshold slice level and a window pulse when the alpha wave enters an intermediate region between the high and a low threshold slice level, remains below the high threshold slice level and falls below the low threshold slice level at the trailing edge, whereas the RS flip-flop outputs a high-alpha phase mark based on the high pulse and a low-alpha phase mark based on the window pulse and neglects any high pulses output between the generation of the above high pulse and that of the next window pulse.
REFERENCES:
patent: 3882850 (1975-05-01), Bailin et al.
patent: 3896790 (1975-07-01), Dikmen
patent: 4013068 (1977-03-01), Settle et al.
patent: 4334545 (1982-06-01), Shiga
Hieda Ichiro
Kodama Hiroyuki
Yoshida Tomoyuki
Agency of Industrial Science and Technology
Sykes Angela D.
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