| 摘要 |
PURPOSE:To simplify handling, to measure the shape of the head (cranium) within a short time and to also accurately measure the potential distribution on the scalp by providing a biomedical electrode to the leading end part of the measuring rod of a displacement sensor and integrating a head shape measuring means and a potential measuring means. CONSTITUTION:100 displacement sensors 2 #1-#100 are mounted to a measuring reference surface (helmet) 1 in a lattice form, and a distance measuring/potential measuring means 2 and a distance/voltage converting means 23 are realized by the constitution of the displacement sensors 2 #1-#100 and a reference voltage power supply 3. When the helmet applied to the head of an examinee and the cranium are fixed, the measuring rod 41 of each of the displacement sensors 2 becomes a state pushed up by the scalp. A terminal 1 is provided to each sensor main body 43 and, when constant voltage is applied to the terminal 1 from the reference voltage power supply, the voltage V23 between terminals 2-3 is obtained as the voltage value proportional to (a). For example, with respect to 32 displacement sensors 2 among 100 ones #1-#100, a terminal 4 is further provided to each of the sensor main body 43 to be connected to each measuring rod 41 by an electric wire. Since the leading end of the measuring rod 41 being a conductor is brought into contact with the scalp when the helmet is applied to the examinee, said measuring rod becomes a potential measuring electrode simultaneously. |
