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. 2014 Feb 28;9(2):e89949. doi: 10.1371/journal.pone.0089949

Figure 2. The RoSco head mounted module shown on a Long Evans rat.

Figure 2

The head mounted module consists of three PCBs and a small battery. While appearing relatively large in this photo, the head mounted module is light weight. The blue wire is the antenna. The red LEDs are for motion tracking using an overhead camera system.