[Is the early brain organisation of spatial information conveyed by tactile stimuli performed in different ways in congenital and acquired blind children? A pilot study]. / Es distinta la organizacion cerebral temprana de la informacion espacial transmitida a traves de estimulos tactiles en ninos invidentes congenitos y adquiridos?: un estudio piloto.

Cortical reorganization after congenital blindness is not sufficiently known yet it does offer an optimum window of opportunity to study the effects of absolute sensorial deprivation. Cross-modality in people with blindness has been documented, but it may differ in congenital blindness and in early blindness. Vibrotactile passive stimulation of lines and letters generates different electroencephalographic patterns with different source localizations in two children with blindness, aged 9 and 10, respectively with congenital blindness and early blindness with some remnants of vision. Most of the brain electrical activity is centered in auditive areas in P50 and P100 in the case of the child with congenital blindness, while the other shows activity in multiple areas. Reaction times to letters are shorter than to lines of different orientation in both children.

¿Es distinta la organización cerebral temprana de la información espacial transmitida a través de estímulos táctiles en niños invidentes congénitos y adquiridos?: un estudio piloto / Is the early brain organisation of spatial information conveyed by tactile stimuli performed in different ways in congenital and acquired blind children? A pilot study

La reorganización cortical subyacente a la ceguera congénita no se conoce suficientemente, pero esta última ofrece una ventana óptima para el estudio de los efectos de la deprivación sensorial absoluta. Se sabe también que existe cross-modality en el cerebro de los invidentes, pero ésta difiere en niños con ceguera congénita y aquellos otros con restos de visión. La estimulación vibrotáctil pasiva de líneas y letras genera patrones electroencefalográficos y de localización de fuentes distintos en dos niños de 9 y 10 años, respectivamente, con ceguera congénita y ceguera con restos de visión. En la niña con ceguera congénita, la mayor actividad eléctrica cortical se centra en áreas auditivas en P50 y P100, mientras que en el niño invidente con restos de visión, la actividad se distribuye en múltiples áreas. Los tiempos de reacción a las letras son menores que a las líneas de diferente orientación en ambos niños (AU)

Cortical reorganization after congenital blindness is not sufficiently known yet it does offer an optimum window of opportunity to study the effects of absolute sensorial deprivation. Cross-modality in people with blindness has been documented, but it may differ in congenital blindness and in early blindness. Vibrotactile passive stimulation of lines and letters generates different electroencephalographic patterns with different source localizations in two children with blindness, aged 9 and 10, respectively with congenital blindness and early blindness with some remnants of vision. Most of the brain electrical activity is centered in auditive areas in P50 and P100 in the case of the child with congenital blindness, while the other shows activity in multiple areas. Reaction times to letters are shorter than to lines of different orientation in both children (AU)