has subject area Aging Animals Brain Glutamic Acid Hippocampus Male Maze Learning Memory Memory Disorders Mice Mice, Inbred C57BL Neuropsychological Tests Prefrontal Cortex Presynaptic Terminals Protein Subunits Qa-SNARE Proteins Receptors, N-Methyl-D-Aspartate Synaptic Transmission Synaptosomes