The hippocampus, 'the memory center', is the part of the brain that is responsible for important functions such as short-term memory, cognition, and stress response. Hippocampal volume refers to the amount of brain tissue in the hippocampus and is influenced by genetic and environmental factors. Smaller hippocampal volumes have been tied to neurological disorders such as schizophrenia and Alzheimer's disease.
Six individual gene loci have been discovered that influence hippocampal volume. Read this article to learn more: http://www.ncbi.nlm.nih.gov/pubmed/28098162
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