Animals 1 Article 1 Behavior, Animal 1 Conditioning, Classical 1 Contextual fear conditioning 1 Disease Models, Animal 1 Fear 1 Gene Knockdown Techniques 1 Hippocampus 1 Homer Scaffolding Proteins 1 Homer1c 1 Learning and memory 1 Long term depression Male 1 Maze Learning 1 Metabotropic glutamate receptor 1 Morris water maze test 1 Neuronal Plasticity 1 Rats 1 Rats, Sprague-Dawley 1 Receptors, Metabotropic Glutamate 1 Recognition (Psychology) 1 Schaffer collateral pathway 1 Sprague Dawley rat 1 adenovirus vector 1 adult 1 animal 1 animal behavior 1 animal experiment 1 animal tissue 1