Biofeedback device
First Claim
1. A biofeedback device for monitoring the electric signal produced by muscle activity or the like including means for detecting and amplifying said electric signal, filter means for suppressing unwanted components of said detected signal, sensitivity control means for enabling the level of said detected signal to be selectively set, and means for providing visual feedback of the signal output by said filter means, said visual feedback means comprising:
- rectifier means for generating a D.C. voltage signal proportional to said signal output by said filter means; and
visual indicia means for providing a visual output representative of said D.C. voltage signal, and including a light array in the form of a plurality of serially positioned lights.
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Abstract
A portable biofeedback device for monitoring electric signals produced by muscle activity is disclosed. Electrodes attached to the skin of the person being monitored couple muscle signals to a preamplifier which amplifies the signal and does preliminary filtering of unwanted frequency components in this signal. Further high and low pass filtering and amplification is then performed such that only signals in a certain frequency range are amplified. Sensitivity control is added to enable the level of detected muscle activity to be selectively set. Both visual and audio feedback is generated from the filtered and amplified signal for use by the person being monitored. The visual feedback includes easy to read visual indicators, including an overrange indicator and underrange indicator, for displaying the varying levels of muscle activity.
76 Citations
10 Claims
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1. A biofeedback device for monitoring the electric signal produced by muscle activity or the like including means for detecting and amplifying said electric signal, filter means for suppressing unwanted components of said detected signal, sensitivity control means for enabling the level of said detected signal to be selectively set, and means for providing visual feedback of the signal output by said filter means, said visual feedback means comprising:
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rectifier means for generating a D.C. voltage signal proportional to said signal output by said filter means; and visual indicia means for providing a visual output representative of said D.C. voltage signal, and including a light array in the form of a plurality of serially positioned lights. - View Dependent Claims (2, 3, 4)
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5. A biofeedback device for monitoring the electrical signal produced by muscle activity or the like including means for detecting and amplifying said electric signal, filter means for suppressing unwanted components of said detected signal, sensitivity control means for enabling the level of said detected signal to be selectively set, and means for providing visual feedback of the signal output by said filter means, said visual feedback means comprising:
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rectifier means for generating a D.C. voltage signal proportional to said signal output by said filter means; and visual indicia means for providing a visual output representative of said D.C. voltage signal, and including; oscillator means for generating an output frequency proportional to said D.C. voltage signal; a light source operatively connected to said oscillator means for providing a visual output as a function thereof; means for detecting a voltage overrange in said D.C. voltage signal; means for detecting a voltage underrange in said D.C. voltage signal; overrange indicator means for visually indicating said detected voltage overrange; and underrange indicator means for visually indicating said detected voltage underrange. - View Dependent Claims (6, 7, 8, 9, 10)
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Specification