Photoparoxysmal responses in children: their characteristics and clinical correlates.
This study evaluates the characteristics of photoparoxysmal responses elicited with intermittent photic stimulation during a routine electroencephalogram in childhood and correlated this with the clinical profile of the child. Photoparoxysmal responses occurred in 8% (21/263) of children where activation was undertaken. Photoparoxysmal responses were often brief and had a variable onset latency. This study suggests increasing the duration of the stimulus train to 10 seconds or more will increase the diagnostic yield. Photoparoxysmal responses very rarely outlasted the stimulus, and self-limited photoparoxysmal responses probably have greater significance than previously attributed to them. They are highly correlated with epilepsy.
Nagarajan
Lakshmi
L
Department of Neurology, Princess Margaret Hospital for Children, Perth, Australia.
Kulkarni
Alpana
A
Palumbo-Clark
Linda
L
Gregory
Pauline Bernadette
PB
Walsh
Peter John
PJ
Gubbay
Sasson Stephen
SS
Silberstein
Jonathon Michael
JM
Silberstein
Ernst Peter
EP
Carty
Emma Louise
EL
Dimitroff
Wendy Rosemary
WR
D000293:Adolescent; D002648:Child; D002675:Child, Preschool; D004569:Electroencephalography / Q000379:methods* / Q000706:statistics & numerical data; D004827:Epilepsy / Q000503:physiopathology*; D005260:Female; D006801:Humans; D008297:Male; D010775:Photic Stimulation / Q000379:methods*; D010865:Pilot Projects