title: Sleep EEG and developmental dysphasia: lack of a consistent relationship with paroxysmal EEG activity during sleep.
abstract: In order to clarify the relationship between developmental dysphasia and EEG abnormalities, paroxysmal activities during sleep were studied in a series of 24 children with expressive developmental dysphasia (mean age 8 years) and compared to a control group of 39 children (mean age 9 years). The children of both groups were selected excluding cases with prior history of neurological disease or epilepsy. In the control group, 37 children had normal sleep EEG while 2 children had paroxysmal abnormalities. In the dysphasic group, epileptic abnormalities were observed in 9 cases, rare in 4 cases and frequent in 5 cases (density: 2.5 to 66.2% of total sleep time). Nevertheless, paroxysmal abnormalities did not reach the frequency described in the Landau-Kleffner syndrome, and it is unlikely that EEG abnormalities could have produced dysphasia.
authors.affiliation: Service de Neurochirurgie-Neurologie Pédiatriques, Hôpital de Clocheville, France.
authors.forename: C
authors.initials: C
authors.lastname: Duvelleroy-Hommet
authors.forename: C
authors.initials: C
authors.lastname: Billard
authors.forename: B
authors.initials: B
authors.lastname: Lucas
authors.forename: P
authors.initials: P
authors.lastname: Gillet
authors.forename: M A
authors.initials: MA
authors.lastname: Barthez
authors.forename: J J
authors.initials: JJ
authors.lastname: Santini
authors.forename: E
authors.initials: E
authors.lastname: Degiovanni
authors.forename: F
authors.initials: F
authors.lastname: Henry
authors.forename: B
authors.initials: B
authors.lastname: De Toffol
authors.forename: A
authors.initials: A
authors.lastname: Autret
mesh_terms: D001037:Aphasia / Q000503:physiopathology*; D001921:Brain / Q000503:physiopathology; D001927:Brain Diseases / Q000175:diagnosis / Q000503:physiopathology; D002648:Child; D002675:Child, Preschool; D003937:Diagnosis, Differential; D004569:Electroencephalography; D004827:Epilepsy / Q000503:physiopathology; D005260:Female; D007839:Functional Laterality; D006801:Humans; D008297:Male; D012894:Sleep Stages; D012895:Sleep, REM; D013577:Syndrome