| 摘要 |
PROBLEM TO BE SOLVED: To provide a device for precisely estimating a position a direction and a degree of a bio-action current source. SOLUTION: Bio-magnetism is measured by a magnetic sensor for obtaining measured data which are distributed between two groups each of which is averaged and are then stored in memories, respectively (S1 to S3). A degree of coincidence is calculated (V4) for every memory, and whether the measured data are effective or not is determined (V5). Effective data are selected, and a current source is estimated from these data, thereby it is possible to enhance the degree of accuracy for the estimation. |
