Flash visual evoked potentials in healthy infants

Abstract

AIM:To evaluate visual evoked potentials(VEPs)in healthy infants. METHODS:Thirty-four neurologically and ophthalmologically healthy infants aged 2-10mo were enrolled. Flash VEPs were implemented, with main peak P3 latency, amplitude and differences of latency and amplitude between sides being investigated. RESULTS:In all cases main peak was registered. Its average latency was 138-140 ms and main amplitude 7-9 μV. Latency was variable. CONCLUSION:We propose that latency or amplitude deviation in this population may not happen due to pathological condition, but merely due to ongoing myelination of visual pathways and cortex modeling. Caution needed in attributing the main cortical peak as P3 or some other waves numbers. Cortical nature of the main flash visual evoked potentials peak in infants aged 1-3mo is doubtful.

Keywords

• visual evoked potentials
• normative data
• infants