Figure 7
From: The geometry as an eyed fish feels it in spontaneous and rewarded spatial reorientation tasks
Transparent experimental apparatus for the rewarded exit task. Photographs of the transparent rectangular apparatus used under a reference memory procedure (Experiment 3), inside the water for all its height and inserted in a larger circular tank covered with black gravel on the floor; (a) the modified transparent apparatus with corridors at four corners. Around the experimental apparatus there was a comfortable environment for fishes (with conspecifics and food as rewards in case of correct choices), becoming an incentive to get out of the arena; (b) details of an open door; (c) details of a closed door.
