Henry Molaison, shown above, is often referred to as the best known and most studied individual in the history of neuroscience. He died in 2008 at the age of 82. For confidentiality purposes while he was alive, only his initials, H. M., were used to identify him in the hundreds of studies that he participated in for over five decades. Following his death, his brain was sliced into razor-thin histological sections for preservation and digital imaging, allowing researchers to create a 3D model of his brain (Annese et al., 2014) and hence to determine more accurately the neuroanatomical extent of his 1953 bilateral surgical ablation to treat severe epilepsy.