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" ... Right before her husband had died, Humphrey had begun a residency at the Joseph LeDoux neuroscience lab at New York University. There, she was given free reign of the resources on offer. Along with asking questions of the scientists, and learning what she could from their research, she spent time drawing the tangled and intricate web of neurons that construct the amygdala, which is the part of the brain that processes emotions. She did so by looking at the amygdala through a high-powered microscope, and drawing the patterns she saw with the help of a camera lucida attached to the lens. ... "