he sick sinus syndrome is a clinical entity charTacterized by disturbances of sinoatial impulse formation and conduction.13 Recent studies have demonstrated that abnormalities of conduction and automaticity at other specialized anatomic sites are common in subjects with symptomatic sinus node disease.'^^.^ We describe here the use of combined His bundle electrography and timed vectorcardiograph...

PURPOSE To determine the diagnostic utility of waveform analysis of compound muscle action potentials (CMAP) for carpal tunnel syndrome (CTS). METHODS A total of 131 hands in 71 patients diagnosed with CTS (grouped according to severity) and 80 hands in 44 normal subjects were evaluated using nerve conduction test through the carpal tunnel combined with waveform analysis of CMAP. RESULTS Co...

We study the S = 1/2 Kondo lattice model which is widely used to describe heavy fermion behavior. In conventional treatments of the model the Kondo interaction is decoupled in favour of a hybridization of conduction and localized f electrons. However, such an approximation breaks the local gauge symmetry and implicates that the local f-occupation is no longer conserved. To avoid these problems,...

This paper reports the synthesis, characterization, photophysical and structural properties of the homologous series of good emitting pentacoordinated GaQ'2L complexes 1-3, where Q' is 2-methyl-quinolin-8-olate and L is a phenolate substituted in para position with respect to the oxygen donor atom. A combined approach between the experimental structural analysis (i.e. the molecular fragments in...

Axons from the nucleus magnocellularis form a presynaptic map of interaural time differences (ITDs) in the nucleus laminaris (NL). These inputs generate a field potential that varies systematically with recording position and can be used to measure the map of ITDs. In the barn owl, the representation of best ITD shifts with mediolateral position in NL, so as to form continuous, smoothly overlap...

The effects of regional intravenous analgesia in the upper limb were studied in eight subjects by means of clinical examination and serial nerve conduction techniques. The changes following 1 per cent lignocaine analgesia and ischaemia were compared with those following ischaemia alone; the latter produced analgesia and impairment of conduction at a considerably slower rate than it did when com...

We have studied the independent and combined effects of 30 minutes' exposure to hypoxia and an increase in stimulation frequency from 0.5 Hz to 3.0 Hz on internal longitudinal resistance (ri) and conduction in guinea pig papillary muscles through the use of the voltage ratio method with air as the external insulator. Increasing stimulation frequency from 0.5 to 3.0 Hz in the presence of O2 caus...

Anisotropic electrical conduction measurements have been carried out for thin films of vertically-aligned single-walled carbon nanotubes (VA-SWCNTs) grown by an alcohol catalytic CVD process. Combined with controlled synthesis and structure characterization by optical spectroscopy, the influence of the aligned structure on the electrical conduction has been identified. The out-of-plane conducti...

OBJECTIVES Variability in Baha® sound processor fittings may arise from the nature of the implant-to-bone transmission as well as transcranial attenuation for patients with single-sided sensorineural deafness (SSD). One method of improving the predictability of Baha fittings is to measure the individual patient's actual bone conduction thresholds, thereby removing the influences of skin thickne...