Title :
The effect of interference source proximity on cuff imbalance
Author :
Triantis, Iasonas F. ; Demosthenous, Andreas
Author_Institution :
Inst. of Biomed. Eng., Imperial Coll. London, UK
Abstract :
The presence of cuff imbalance degrades the signal-to-interference (ENG/EMG) ratio in tripolar nerve cuff electrode recordings. Known causes of cuff imbalance include inhomogeneous tissue growth after cuff implantation and cuff manufacturing tolerances. In this paper, we report on an additional contribution to cuff imbalance that stems from variations in orientation and distance of the tripolar cuff relative to the external interference source. The latter is represented here by a dipole. Interference amplitude is also shown to depend on orientation and distance variations, here both factors included in the term "proximity". The study was conducted using field simulations and saline-bath experiments.
Keywords :
biological tissues; biomedical electrodes; electromyography; neurophysiology; EMG; ENG; cuff imbalance; cuff implantation; electromyogram; electroneurogram; inhomogeneous tissue growth; interference source proximity; tripolar nerve cuff electrode recordings; Biological materials; Biological system modeling; Biomedical engineering; Conducting materials; Degradation; Electrodes; Electromyography; Interference; Two dimensional displays; Voltage; Cuff imbalance; proximity effects; tripolar nerve cuffs; Action Potentials; Artifacts; Computer Simulation; Electrodes, Implanted; Electrodiagnosis; Electromagnetic Fields; Equipment Failure Analysis; Models, Neurological; Peripheral Nerves;
Journal_Title :
Biomedical Engineering, IEEE Transactions on
DOI :
10.1109/TBME.2005.862569
