The individual rate of onset of action of tubocurarine and alcuronium has been examined with and without a priming dose of the same agent or the other agent, by measurement of changes in the evoked compound electromyogram of the adductor pollicis muscle. Priming was associated with acceleration of the onset of neuromuscular block.

Submit Manuscript | http://medcraveonline.com Abbreviations: ASFA: American Society for Apheresis; CMAPs: Compound Muscle Action Potentials; CSF: Cerebrospinal Fluid; EEG: Electroencephalogram; EMG: Electromyogram; EVM: Eye opening, Verbal response, Motor response; GBS: Guillain Barré Syndrome; GCS: Glasgow Coma Scale; IVIG: Intravenous Immunoglobulin; NCS: Nerve Conduction Study; NMICU: NeuroM...

BACKGROUND Procedural sedation is frequently performed in spontaneously breathing patients, but hypnotics and opioids decrease respiratory drive and place the upper airway at risk for collapse. METHODS In a randomized, controlled, cross-over, pharmaco-physiologic study in 12 rats, we conducted acute experiments to compare breathing and genioglossus electromyogram activity at equianesthetic co...

STUDY OBJECTIVES Previous investigators have suggested that quiet sleep (QS) in rats develops rapidly upon the emergence of cortical delta activity around postnatal day (P)11 and that the presence of "half-activated" active sleep (AS) suggests that infant sleep is initially disorganized. To address these issues, we examined the temporal organization of sleep states during the second postnatal w...

Backgrounds: Injury to the vagus nerve or one of its branches during carotid endarterectomy can result in vocal fold paralysis but the exact mechanism of injury responsible for vocal fold paralysis after carotid endarterectomy is unclear. Aims: This study was performed to identify potential predictors of vagus nerve injury and obtain feedback by application of intraoperative continuous vagus ne...

The intent of this paper is to present performance evaluations for two systems that utilize electromyogram (EMG) signals from muscles in the face of the user to control the computer cursor. Both systems translate facial muscle contractions into five cursor actions: left, right, up, down and left-click. The systems perform this translation by using features derived from the spectral analysis of ...

1. Motor units in the first dorsal interosseus muscle of normal human subjects were recorded by needle electrodes, together with the surface electromyogram (e.m.g.). The wave form contributed by each motor unit to the surface e.m.g. was determined by signal averaging. 2. The peak-to-peak amplitude of the wave form contributed to the surface e.m.g. by a motor unit increased approximately as the ...

OBJECTIVE We systematically tested the capability of the Convolution Kernel Compensation (CKC) method to identify motor unit (MU) discharge patterns from the simulated and experimental surface electromyogram (sEMG) during low-force contractions. METHODS sEMG was detected with a grid of 13 x 5 electrodes. In simulated signals with 20 dB signal-to-noise ratio, 11+/-3 out of 63 concurrently acti...