A fast visual evoked potential method for functional assessment and follow-up of childhood optic gliomas

Maria Teresa S Trisciuzzi, Riccardo Riccardi, Marco Piccardi, Giancarlo Iarossi, Luca Buzzonetti, Anna Dickmann, Cesare Colosimo, Antonio Ruggiero, Concezio Di Rocco, Benedetto Falsini

Research output: Contribution to journalArticle

Abstract

Objective: To evaluate a fast technique of visual evoked potentials (VEPs) recording, in response to steady-state luminance stimuli (SS-LVEPs), for functional assessment and follow-up of childhood optic gliomas (OGs). Methods: Eighteen OG patients (age range: 3.5-18 years), with different degrees of optic pathway damage severity, were examined. Sixteen age-matched normal subjects served as controls. Ten of the 18 OG patients were re-tested 1-3 months after the first examination. SS-LVEPs were elicited by a sinusoidally-modulated flickering (8 Hz) uniform field, generated by a light emitting diode (LED) -array and presented monocularly in a mini-ganzfeld. Amplitude and phase of the Fourier-analyzed response fundamental (1F) and second harmonic (2F) were measured. The full VEP protocol had a median duration of 6 min (range: 4-12). Results: When compared to normal control values, median 1F and 2F SS-LVEP amplitudes of OG patients were reduced (P

Original languageEnglish
Pages (from-to)217-226
Number of pages10
JournalClinical Neurophysiology
Volume115
Issue number1
DOIs
Publication statusPublished - Jan 2004

Keywords

  • Flicker
  • Fourier analysis
  • Optic glioma
  • Optic pathways
  • Visual evoked potentials

ASJC Scopus subject areas

  • Clinical Neurology
  • Radiology Nuclear Medicine and imaging
  • Neurology
  • Sensory Systems
  • Physiology (medical)

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    Trisciuzzi, M. T. S., Riccardi, R., Piccardi, M., Iarossi, G., Buzzonetti, L., Dickmann, A., Colosimo, C., Ruggiero, A., Di Rocco, C., & Falsini, B. (2004). A fast visual evoked potential method for functional assessment and follow-up of childhood optic gliomas. Clinical Neurophysiology, 115(1), 217-226. https://doi.org/10.1016/S1388-2457(03)00282-7