Corner Turning Test for Evaluation of Asymmetry After Intracerebral Hemorrhage in Rodents - Animal Models of Acute Neurological Injuries: Injury and Mechanistic Assessments - page 649

Fig. 1. The corner turn apparatus consists of two walls forming a 30° corner and a 5-mm gap at the apex of triangular tip.
Fig. 2. ( a ) Place the open-edge of apparatus near the edge of the table and permit the rodent to advance into the corner.
( b ) Full rearing and vertical exploration of the corner. ( c ) Turning to the side by placing one or both forepaws along the wall
as the rodent shifts the weight around. ( d ) Completion of a full turn signifi es a body position 180° from starting point.