The frontal part, it seems that it works as a filter trying to let information come in only from the right flicker that you are paying attention to and trying to inhibit the information coming from the ignored one.
La parte frontal, parece que trabaja como filtro tratando de dejar pasar solo la información del parpadeo correcto al que uno le presta atención y trata de inhibir la información procedente del cuadro ignorado.