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Encephalolexianalyzer

Patent ·
OSTI ID:871985
 [1];  [2]
  1. Livermore, CA
  2. Castro Valley, CA
+ Show Author Affiliations

The encephalolexianalyzer uses digital signal processing techniques on electroencephalograph (EEG) brain waves to determine whether or not someone is thinking about moving, e.g., tapping their fingers, or, alternatively, whether someone is actually moving, e.g., tapping their fingers, or at rest, i.e., not moving and not thinking of moving. The mu waves measured by a pair of electrodes placed over the motor cortex are signal processed to determine the power spectrum. At rest, the peak value of the power spectrum in the 8-13 Hz range is high, while when moving or thinking of moving, the peak value of the power spectrum in the 8-13 Hz range is low. This measured change in signal power spectrum is used to produce a control signal. The encephalolexianalyzer can be used to communicate either directly using Morse code, or via a cursor controlling a remote control; the encephalolexianalyzer can also be used to control other devices. The encephalolexianalyzer will be of great benefit to people with various handicaps and disabilities, and also has enormous commercial potential, as well as being an invaluable tool for studying the brain.

Research Organization:
Lawrence Livermore National Laboratory (LLNL), Livermore, CA
DOE Contract Number:
W-7405-ENG-48
Assignee:
Regents of University of California (Oakland, CA)
Patent Number(s):
US 5840040
OSTI ID:
871985
Country of Publication:
United States
Language:
English

References (3)

Functional topography of the human mu rhythm journal January 1978
A Hybrid Broad-Band EEG Frequency Analyzer for Use in Long-Term Experiments journal January 1973
An EEG-based brain-computer interface for cursor control journal March 1991

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