[Paradoxical cortical response during the intermittent photo stimulation in the dissociated strabismus].
OBJECTIVE
To determine the behavior of the visual cerebral cortex during the photo stimulation in the dissociated strabismus.


METHODS
We elaborated a digital cerebral mapping using the international 10-20 system with 21 electrodes and an option of a register of 32 channels with established parameters in every period (printed and with pulse monitoring) applied to two children with dissociated strabismus. We registered and evaluated the cortical response to different stimuli: luminous, hyperventilation, closing and opening of eyelids, asleep and awake; through digital electroencephalography, as well as the registering of ocular movements with electroculography and video film with infrared light.


RESULTS
We discovered a paradoxical neuroelectrical response and the visual cerebral cortex during the intermittent photo stimulation never reported before, showing the neuroelectrical changes that occur in the dissociated horizontal deviation (DHD). We correlated these findings with the origin of the dissociated strabismus.
Gallegos-Duarte
Martín
M
Universidad del Valle de México, Instituto Queretano para la Atención de las Enfermedades Congénitas, Gladiolas 107, Col. Prados de la Capilla, 76176 Santiago de Querétaro, Querétaro, México. martín_oso@hotmail.com
D001931:Brain Mapping; D002648:Child; D002675:Child, Preschool; D004569:Electroencephalography; D004585:Electrooculography; D005074:Evoked Potentials, Visual; D005133:Eye Movements; D005260:Female; D006801:Humans; D008297:Male; D010775:Photic Stimulation; D011446:Prospective Studies; D013285:Strabismus / Q000503:physiopathology*; D014792:Visual Acuity; D014793:Visual Cortex / Q000503:physiopathology*