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. Author manuscript; available in PMC: 2013 Sep 1.
Published in final edited form as: Behav Brain Res. 2012 Jun 26;234(1):82–90. doi: 10.1016/j.bbr.2012.06.020

Figure 2. Drinking postures of sham and ION-CCI rats.

Figure 2

A) Illustration of infraorbital nerve ligation (ION-CCI) and affected region (V2). B) Drinking postures of a sham and an ION-CCI rat with the mechanical module. The head position of ION-CCI rat was tilt up to try to avoid contacting V2 regions with the stimulation filaments within the drinking window. C) Another ION-CCI rat showed unusual drinking posture. The rat turned his head (also body) up-side down and used its V3 regions to push away mechanical stimulation filaments in order to access the nipple of milk bottle. D) An ION-CCI rat (right side ligation) tiled its head to left side to avoid contacting the right side of the thermal module (12 °C) while trying to drink milk (left panel). Right panel shows another ION-CCI rat who learned later to use its left front paw to take milk from the nipple.