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. Author manuscript; available in PMC: 2018 Sep 1.
Published in final edited form as: Neurobiol Learn Mem. 2016 Nov 4;143:49–58. doi: 10.1016/j.nlm.2016.10.015

Fig. 4. Sensory Development and the Emergence of Threat Conditioning.

Fig. 4

Olfactory system is functional at birth and olfactory fear conditioning emerges at PN 10. At PN 12 auditory system becomes functional and auditory fear conditioning emerges between PN 14–17. At PN 15, pups can effectively process visual stimuli and visual fear conditioning emerges at PN 16–17. Functional contextual fear conditioning emerges during the periweaning period (PN 18–24).