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Schematic of arena used for behavioral testing, shown from above (A) and from the front (B). Ferrets initiated trials at the central poke-hole, which triggered the presentation of stimuli from speakers positioned above the poke-holes on the left and on the right. Light barriers in poke-holes on either side registered the ferrets' responses. On rewarded trials, ferrets received water rewards via spouts secured in the poke-holes.
