Title :
An Amplitude and Phase Regulating Magnetic Field Generator for an Eye Movement Monitor
Author :
Optican, L.M. ; Frank, D.E. ; Smith, B.M. ; Colburn, Andt R.
Author_Institution :
Laboratory of Sensorimotor Research, National Eye Institute, National Institutes of Health
fDate :
3/1/1982 12:00:00 AM
Abstract :
One common method of eye movement detection uses an ocular search coil within two magnetic fields arranged in spatial and temporal quadrature. An inexpensive circuit is presented that regulates the strength of the two fields and their phase separation. This stabilization minimizes perturbations due to motion of the field´s generating coils, motion of metal witiin or near the fi´elds, and component value drift.
Keywords :
Bandwidth; Circuits; Coils; Decoding; Electromagnetic fields; Laboratories; Magnetic fields; Monitoring; Phase detection; Voltage; Calibration; Electromagnetic Fields; Electromagnetics; Electronystagmography; Equipment Design; Humans;
Journal_Title :
Biomedical Engineering, IEEE Transactions on
DOI :
10.1109/TBME.1982.324888
