 0\) In the Abstract: \"These findings suggest that projection specific sampling of retinal inputs forms a basis for the selective triggering of behaviours by the superior colliculus\". I don\'t think that this statement is sufficiently supported by the work, as the functional distinction is not clear -- for example, the authors show that despite different retinal inputs, looming stimuli apparently activate both Pbg and LP pathways (not obviously consistent with the selective triggering of behaviours), while the potent chirp stimuli for the retinal ganglion cells apparently have no counterpart centrally and probably not behaviourally. I would think this needs rewording to offer speculation not conclusion (e.g. \"These findings open the possibility that projection specific sampling of retinal inputs helps form a basis for the selective triggering of behaviours by the superior colliculus\"). Similarly, the first paragraph of Discussion section accentuates the difference populations that are sampled, and ignores the similarities, creating the unfortunate impression that they are non-overlapping inputs.  