The use of Hall's emf pick-up in experimental physiology

Autor: Koryagin, A. P., Labas, Yu. A., Mirkin, A. S.
Zdroj: Bulletin of Experimental Biology and Medicine; November 1963, Vol. 54 Issue: 5 p1293-1297, 5p
Abstrakt: In mechanographic recording of some physiological functions (masticating movements of small mammals, blinking reflex) it is difficult and undesirable to connect the object with the recording device. This connection may be avoided by attaching to the object a miniature constant magnet (weighing about 50–100 mg) and conducting a remote recording of the shifts of the latter by means of the Hall's e.m.f pickup. The value of the galvanomagnetic e.m.f. occurring in the pickup, which is proportional to the intensity of the magnetic flow crossing it, may be recorded on the oscillograph after amplification and transformation. Remote recording of the following was performed: the motions of the lower jaw of small rodents in chronic experimental conditions, respiratory motions of the freely moving fish, blinking reflex of man, mechanocardiogram of frog, etc.
Databáze: Supplemental Index