Polysomnography often includes electroencephalography, electromyography, electrocardiography, muscle activity and respiratory function. Radial neuropathy may be diagnosed using MRI, ultrasound, nerve conduction study or electromyography (EMG). Additional testing includes electromyography (EMG) and nerve conduction tests. The electrical activity associated with muscle contraction are measured via electromyography (EMG). Electrodiagnostic testing (electromyography and nerve conduction velocity) can objectively verify the median nerve dysfunction. Cramp fasciculation syndrome is diagnosed by clinical examination and electromyography (EMG). Other tests rarely ordered include anorectal manometry, anal sphincter electromyography, and defecography. Using electromyography (EMG), the neural strategies of muscle activation can be measured. In patients with neuropathy, electromyography may reveal a sensorimotor peripheral neuropathy. Anorectal manometry involves two separate tests&colon; the balloon expulsion test and anal sphincter electromyography (EMG). Physiatrists are also trained in nerve conduction studies and electromyography. An important diagnostic tool here is electromyography (EMG). Fibrillation potentials and fasciculations are often also present with electromyography. The most effective way to detect fasciculations may be surface electromyography (EMG). Diagnosis typically involves electromyography and lumbar puncture.