Anterior extensions of ALc and ALi. (a) Transverse section of the head at the level of the optic chiasma. The injection in the PLL synaptic field extended to the ALL synaptic field such that ALL neuromasts and nerves are also labeled (ALL). (b) Position of the labeled fibers in relation to the major forebrain subdivisions, based on the autofluorescence pattern (green). Since the thick section is subjectively seen from the front, the injection site appears on the right side of this figure (left side of the fish).