The Rats Pool Shape Apparatus was used by Cameron M. Bye et al. (2018) to assess the effects of pool shape manipulations on rat spatial memory acquired in the Morris water maze.
In the experiment, rats were trained on the spatial version of the Morris water maze over four days. A probe test was given 24h after training, in which the shape of the pool either remained the same as during training or was changed to a different shape.
Two different pool shapes were used in these experiments. A white circular pool with as well as a white square inlay made of plastic that fit into the circular pool.
Mazeengineers offers the Rats Pool Shape Apparatus.