Apparatus for detecting small involuntary movement
US5365941A · kind A · utility
20Cited by
4References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 16, 1993 |
| Grant date | Nov 22, 1994 |
| Priority date | — |
| Expiry date | Jun 16, 2013 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B3/113
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A target is presented on a board for calculation, eye movement of a subject while he is gazing at the target is detected by an eye movement detecting portion, the output of which is converted into a digital signal in a signal processing circuit and it is applied to a calculating portion. The calculating portion calculates small involuntary movement data in response to the input digital signal to find a value of a fractal dimension and time dependence of the fractal dimension to determine a disease related to brain function, and the output of determination is provided from an output portion such as a printer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.