Alpha-wave amplitude selector with window slicer
First Claim
1. An alpha-wave amplitude slicer comprises:
- a window slicer that receives an alpha wave as an input, outputs a first 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, the alpha wave remains below the high threshold slice level and the alpha wave falls below the low threshold slice level at a trailing edge; and
an RS flip-flop connected to the window slicer that outputs a high-alpha phase mark based on the first high pulse and a low-alpha phase mark based on the window pulse and neglects any second high pulse output between the generation of the above first high pulse and that of the next window pulse.
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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.
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Citations
6 Claims
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1. An alpha-wave amplitude slicer comprises:
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a window slicer that receives an alpha wave as an input, outputs a first 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, the alpha wave remains below the high threshold slice level and the alpha wave falls below the low threshold slice level at a trailing edge; and an RS flip-flop connected to the window slicer that outputs a high-alpha phase mark based on the first high pulse and a low-alpha phase mark based on the window pulse and neglects any second high pulse output between the generation of the above first high pulse and that of the next window pulse. - View Dependent Claims (2, 3, 4, 5, 6)
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Specification