"Your genes may influence how sensitive you are to emotional information, according to new research by a UBC neuroscientist. The study, recently published in The Journal of Neuroscience, found that carriers of a certain genetic variation perceived positive and negative images more vividly, and had heightened activity in certain brain regions."
"The gene in question is ADRA2b, which influences the neurotransmitter norepinephrine. Previous research by Todd found that carriers of a deletion variant of this gene showed greater attention to negative words. Her latest research is the first to use brain imaging to find out how the gene affects how vividly people perceive the world around them, and the results were startling, even to Todd."