Neurophysiology Diagnostics for Patients
Neurophysiology diagnostics are an integral part of many clinical pathways for patients with problems and conditions that affect the functioning of the brain, nervous system and muscles.
Clinical applications of Neurophysiological Investigations
Nerve Conduction Studies (NCS) and Electromyography (EMG):
These tests provide an objective assessment and usually involve two things. Firstly, nerve conduction studies, electrical pulses to stimulate different nerves to investigate motor and sensory nerve function .Secondly, the use of fine concentric needle or surface electrodes to test muscle function. This is the EMG (electromyography) part.
Evoked Potential Studies (EPS) – Visual (VEP), Auditory (AEP), and Somatosensory (SSEP):
Evoked potentials are potentials produced by the brain in response to specific stimuli, for example, a flashing light ,sound, or electrical pulse. They are used to access the function of nerve pathways, especially in some neurological disorders, such as multiple sclerosis and optic nerve disorders.
Chemodenervation with Botulinum toxin under EMG guidance:
For blepharospasm, hemifacial spasm, spasmodic torticollis, writer’s cramp etc.. Repetitive Nerve Stimulation Study and Single Fiber EMG for myasthenia gravis and Eaton –lambert syndrome
Electro Retinography (ERG):
evaluation of various retinal diseases, like diabetic retinopathy
Video –Electroencephalogram (EEG) :
EEG is a recording of electrical activity of the brain and is used in the investigation of various neurological conditions such as epilepsy/unexplained blackouts, intracranial infections, metabolic disorders, encephalopathy, abnormal movement, stroke, confusion, memory deterioration or impairment/dementia, and sleep disorders. In epilepsy, it aids in the localization/classification of the problem, and for assessment of treatment, underlying causes or prognosis, as certain types of epilepsy respond best to certain types of medication.