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Hope for the Best or Prepare for the Worst? Towards a Spatial Cognitive Bias Test for Mice

Figure 1

Cognitive bias test apparatus.

(A) Schematic diagram of the apparatus used in experiment I and II displaying the start box, the starting corridor, the central platform, the positive and negative reference arm, the three probe arms, and the sliding doors. In experiment I both reference arms had either a positive or a negative outcome and only the central probe arm was used for the probe trial. (B) Apparatus used in experiment III with the start cylinder positioned in the starting corridor, the central platform, the positive and negative reference arm, and the ambiguous probe arm. Unused arms were closed by reversing them so that their closed end functioned as barrier. Please note: The position of the positive and negative reference location in experiment II and III was counterbalanced between individuals.

Figure 1

doi: https://doi.org/10.1371/journal.pone.0105431.g001