title: Sources of EEG activity in learning disabled children.
abstract: The sources of different EEG frequencies were studied in 25 normal children and 46 learning disabled (not otherwise specified) children between 7 and 11 years old. The EEG sources were computed using Frequency-domain Variable Resolution Electromagnetic Tomography which produces a three dimensional picture of the currents at each EEG frequency. Significant differences between groups were observed. LD children showed more theta activity (3.5 to 7.02 Hz) in the frontal lobes and control children more alpha (9.75 to 12.87 Hz) in occipital areas. These results may support the maturational lag hypothesis, as the neurobiological cause of learning deficiencies not otherwise specified.
authors.affiliation: Institute of Neurobiology, National Autonomous University of Mexico, Campus UNAM-UAQ Juriquilla, Querètaro 76230, México. thalia@servidor.unam.mx
authors.forename: Thalía
authors.initials: T
authors.lastname: Fernández
authors.forename: Thalía
authors.initials: T
authors.lastname: Harmony
authors.forename: Antonio
authors.initials: A
authors.lastname: Fernández-Bouzas
authors.forename: Juan
authors.initials: J
authors.lastname: Silva
authors.forename: Wendy
authors.initials: W
authors.lastname: Herrera
authors.forename: Efraín
authors.initials: E
authors.lastname: Santiago-Rodríguez
authors.forename: Liliana
authors.initials: L
authors.lastname: Sánchez
mesh_terms: D000513:Alpha Rhythm / Q000145:classification*; D001921:Brain / Q000503:physiopathology*; D001931:Brain Mapping / Q000379:methods*; D002648:Child; D005260:Female; D006801:Humans; D021621:Imaging, Three-Dimensional / Q000379:methods; D007859:Learning Disabilities / Q000175:diagnosis* / Q000503:physiopathology* / Q000523:psychology; D015225:Magnetoencephalography / Q000379:methods*; D008297:Male; D015999:Multivariate Analysis; D012680:Sensitivity and Specificity; D012815:Signal Processing, Computer-Assisted; D013223:Statistics as Topic; D013826:Theta Rhythm / Q000145:classification*