Sensory evoked potentials: PERG, VEP, and SEP

Area of Science:

• Neuroscience
• Ophthalmology
• Neurology

Background:

• Pattern electroretinography (PERG) is a key electrophysiological technique for assessing retinal and optic nerve function.
• Neuronal diseases of the central nervous system (CNS) often manifest with visual pathway abnormalities.
• Existing literature highlights the need for integrated diagnostic approaches in neuro-ophthalmology.

Purpose of the Study:

• To review current advancements in the practice and theory of pattern electroretinography.
• To explore the clinical applications of PERG, particularly in the context of CNS disorders.
• To evaluate the complementary role of VEPs and SEPs alongside MRI in neurological disease management.

Main Methods:

• Review of current literature on pattern electroretinography, visual evoked potentials (VEPs), and sensory evoked potentials (SEPs).
• Comparative analysis of electrophysiological techniques (PERG, VEPs, SEPs) with neuroimaging (MRI).
• Discussion of generator sources and clinical utility of these electrophysiological measures.

Main Results:

• PERG offers valuable insights into retinal and optic nerve function relevant to CNS diseases.
• VEPs are effective in tracking the evolution and follow-up of multiple sclerosis (MS), complementing MRI findings.
• SEPs, when used with MRI, provide quantitatively comparable data for spinal cord disorders.

Conclusions:

• PERG, VEPs, and SEPs are crucial electrophysiological tools in the diagnosis and management of neurological conditions.
• These techniques, particularly VEPs and SEPs, demonstrate a complementary relationship with MRI, enhancing diagnostic accuracy.
• Integrated use of electrophysiology and neuroimaging offers a comprehensive approach to CNS and spinal cord disorders.