1. antibiotic-treated (ABX) and germ-free (GF) mice had disrupted extinction learning. Explain how extinction learning is relevant to mental illness
2. describe some of the ways in which the gastrointestinal (GI) system and GI microbiota can affect brain function
3. describe the evidence for the involvement of the infralimbic (IL) cortex and the medial prefrontal cortex (mPFC) on extinction learning
4. describe the evidence for the involvement of dendritic spine remodelling in learning