Brain wave analysis apparatus for use in diagnosing living body conditions
US4254779A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 9, 1978 |
| Grant date | Mar 10, 1981 |
| Priority date | — |
| Expiry date | Jun 9, 1998 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B5/384
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
In a brain-wave analysis apparatus, an electrical brain-wave signal is analyzed for purposes of diagnosis by detecting the time interval between adjacent ones of the intersections of the brain-wave signal with a predetermined level, and the peak value and the wave-form area of the brain-wave signal in the said time interval, or the amplitude value of the brain-wave signal every constant period of time. The said time intervals, peak values, wave form areas, and amplitude values are each classified according to their magnitude, accumulated and stored; and said information is used to prepare histograms. The histograms are analyzed by a processor to obtain their standard deviations, and variations in the standard deviations with time are displayed or recorded to provide a basis for diagnosing living body conditions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.