Poor reading skills may involve a failure to focus attention.
A source localization analysis was carried out to provide brain functional and structural assessments of individuals with poor reading skills. Standardized low-resolution brain electromagnetic tomography was used to locate sources of P2 and P3 event-related potential components in normal readers and in poor reader children performing a cued continuous performance task. Cue-elicited P2 sources in the right superior parietal gyrus were smaller in 37 poor readers than in 40 normal readers. Poor readers showed a higher P3 activation in response to a false target in frontal and frontorbital regions than normal readers. These results suggest that reading disabilities may be attributed to failures in attentional focalization for incoming stimuli.
Silva-Pereyra
Juan
J
Proyecto de Neurociencias, UIICSE, FES Iztacala, Universidad Nacional Autónoma de México, Tlalnepantla Estado de México, CP. 54090, México. jsilvapereyra@gmail.com
Bernal
Jorge
J
Rodríguez-Camacho
Mario
M
Yáñez
Guillermina
G
Prieto-Corona
Belén
B
Luviano
Lourdes
L
Hernández
Miguel
M
Marosi
Erzsebet
E
Guerrero
Vicente
V
Rodríguez
Héctor
H
D001289:Attention Deficit Disorder with Hyperactivity / Q000175:diagnosis / Q000209:etiology*; D001921:Brain / Q000473:pathology / Q000503:physiopathology*; D002648:Child; D003463:Cues; D004410:Dyslexia / Q000150:complications*; D005074:Evoked Potentials, Visual / Q000502:physiology; D005260:Female; D006801:Humans; D008297:Male; D010364:Pattern Recognition, Visual / Q000502:physiology; D010775:Photic Stimulation / Q000379:methods; D011597:Psychomotor Performance / Q000502:physiology*; D011930:Reaction Time / Q000502:physiology