Using axon models to interpret electrodiagnostic nerve tests

Electrodiagnostic Tests in Eye Disease.

Basis of the Electroretinogram An electrical potential exists between the cornea and the fundus of the living eye. When the eye is illuminated by a flash of light a small potential is generated in addition to this corneofundal potential, which forms the ERG. This is analogous to the way in which the ECG is recorded above the steady skin potential. The final response is the sum of a number of co...

How to Interpret Hydrogen Breath Tests

Hydrogen breath tests using various substrates like glucose, lactulose, lactose and fructose are being used more and more to diagnose small intestinal bacterial overgrowth (SIBO) and lactose or fructose malabsorption. Though quantitative culture of jejunal aspirate is considered as gold standard for the diagnosis of SIBO, hydrogen breath tests, in spite of their low sensitivity, are popular for...

Using Visual Analytics to Interpret Predictive Machine Learning Models

It is commonly believed that increasing the interpretability of a machine learning model may decrease its predictive power. However, inspecting input-output relationships of those models using visual analytics, while treating them as blackbox, can help to understand the reasoning behind outcomes without sacrificing predictive quality. We identify a space of possible solutions and provide two ex...

Electrodiagnostic Medicine Consultation in Peripheral Nerve Disorders

Electrodiagnostic confirmation of long thoracic nerve palsy.

Long thoracic nerve latencies were measured in 25 normal subjects. The nerve was stimulated at Erb's point. Monopolar electrodes were used to record the motor evoked response from the serratus anterior muscle. The mean long thoracic nerve latency was 3.9 +/- 0.6 ms. Four athletes with unilateral, isolated long thoracic nerve palsies were compared with the control group and with the uninvolved e...