“…The left and right TeO modulate their activity patterns via the tectal (CT) and the posterior commissures (CP) (Robert and Cuénod, ; Niida, ; Mascetti and Arriagada, ; Rhoades et al, ; Keysers et al, ). These commissures have been implicated in interhemispheric transfer of visual discriminations in fish (Mark, ; Ingle and Campbell, ; Hemsley and Savage, ), in transfer of habituated stimuli and in lateralized visuomotor behavior in birds (Hamassaki and Britto, ; Güntürkün and Böhringer, ), and in transfer of black–white discrimination, recovery from cortical hemianopia, and to some extent transfer of motion and brightness discrimination in mammals (Sherman, ; Peck et al, ; Hottman, ; Sprague, ).…”