公开(公告)号：US5450854A

公开(公告)日：1995-09-19

申请号：US156637

申请日：1993-11-24

申请人： Hiroyuki Kodama ,  Ichiro Hieda ,  Tomoyuki Yoshida

发明人： Hiroyuki Kodama ,  Ichiro Hieda ,  Tomoyuki Yoshida

IPC分类号： A61B5/0476 ,  A61B5/0482 ,  A61M21/00

CPC分类号： A61B5/0482

摘要： 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.

摘要翻译： 具有窗口切片器的α波幅度选择器快速选择并检测脑波中的α分量的振幅超过或低于用于生物反馈的给定阈值水平的时域。 接收α波作为输入的窗口切片器和连接到窗口切片器的RS触发器的组合显着地减少了α波幅度超过或低于预设值的点之间的时间延迟， 给出了反馈刺激。 当α波超过高阈值切片电平时，窗口切片器输出高脉冲，而当α波进入高阈值切片电平和低阈值切片电平之间的中间区域时，窗口脉冲保持低于高阈值切片电平并且低于 在下降沿的低阈值限幅电平，而RS触发器基于高脉冲输出高α相位标记，并且基于窗口脉冲输出低α相位标记，并且忽略在生成之前的任何高脉冲输出 高于脉冲的脉冲和下一个窗口的脉冲。