The symmetry and interhemispheric propagation of pediatric photoparoxysmal response.
Abstract number :
476
Submission category :
3. Neurophysiology / 3C. Other Clinical EEG
Year :
2020
Submission ID :
2422818
Source :
www.aesnet.org
Presentation date :
12/6/2020 5:16:48 PM
Published date :
Nov 21, 2020, 02:24 AM
Authors :
Jolanta Strzelecka, Medical University of Warsaw; Tymon Skadorwa - Medical University of Warsaw; Sergiusz Jozwiak - Medical University of Warsaw;;
Rationale:
The quantitative analysis of the photoparoxysmal response (PPR) to intermittent photic stimulation (IPS) becomes a promising method of the assessment of photosensitivity (PS). The pattern of PPR propagation underlies the model used for calculations. The generalization of a discharge should correspond with the parameters objectively characterizing the PPR in both cerebral hemispheres, and yet to date no evidence of a postulated symmetry has been revealed.
Method:
We aimed to investigate the interhemispheric symmetry by comparing the EEG amplitude and interhemispheric coherence in both hemispheres in 100 non-epileptic individuals of both sexes, aged 5-18 years, with PS grade IV (sample) and without PS (control).
Results:
The distribution of amplitude values between the hemispheres was comparable in both groups, but significantly different between the sample and the control. Individual tracks of propagation revealed the hemispheric symmetry. ICoh values were significantly higher in occipital, temporal and fronto-polar areas in children with PS.
Conclusion:
PPR in children with PS shows a symmetry between cerebral hemispheres. An interhemispheric propagation is facilitated in children with PS and the propagation is more likely in the occipital and temporal regions. The study provides an objective evidence of the interhemispheric symmetry in pediatric PPR
Funding:
:I have no funding
Neurophysiology