Fig. 7.

Analysis method for social interaction in home cage. (A) Picture of the home cage behavior monitoring system. (B) Captured image at 256 grayscale during dark cycle. (C) Captured image at 256 grayscale during light cycle. (D) Image that was made binary by a threshold. This image contains noise. Note that the image of a mouse in the upper left cage was divided into two particles by the tail of another mouse in the cage. (E) Image which was processed by commands, "Erode" and "Dilate." Noise was eliminated and the divided mouse images were united as one particle.