Figure 1.

Behavioral apparatus to assess unsupervised learning. A, Schematic of behavioral apparatus floor plan shows delineation of subzones (a–j) used for analysis of motion tracking data in the unsupervised learning task. Two objects placed in the open field compartment are identified by small gray circles within fields labeled d and e. Gray regions identify areas of the multicompartment environment: dark compartment (a, b), dark entry (h), open field (c), corners (g, i, j), window (f), and area surrounding objects (d, e). B, Representative trace of rat locomotion during the 30 min test on day 1 in the unsupervised learning environment generated from video analysis by motion-tracking software. Boundaries of the behavioral apparatus and locations of objects are shown as gray lines.