| 摘要 |
PROBLEM TO BE SOLVED: To provide a biological magnetic measuring instrument executing biological magnetic measurement with high precision even at the time of using a complicated image as stimulation by induced brain magnet. SOLUTION: Based on the display instruction of a prescribed image given from a collection control part 4 in advance of measuring, a personal computer 7 displays an image on a screen 9 through a projector 8. At this time, the luminance variation of the screen 9 is detected by a light trigger part 10 and a data collection unit 2 starts collection of biological magnetic data of a subject M by setting a detection signal outputted from the part 10 as a trigger. An arithmetic part 3 add-averages collected biological magnetic data by each displayed picture and analyses a magnetic field through the use of the data to execute the estimating arithmetic of a biological activity current source, which can be supposed to be generated by an image display at the subject M, to display the arithmetic result on a monitor 11. |
