The architecture of an inhibitory sidepath within the avian tectofugal system.

onto pretectalis and the rostrolateral rotundus. In addition, our immunocytochemical data make it likely that the cells of the subpretectalis receive glutamatergic and GABAergic input. These data provide evidence that the tectofugal sidepath over the subpretectalis could be involved in two major functions: The ¢rst is a modulation of attentional shifts from one eye to the other, while the second is a temporal ¢ne-tuning of rotundal units. NeuroReport 14:879^ 882 � c 2003 Lippincott Williams & Wilkins.