Modern scientific knowledge of how memory functions are organized in the human brain originated from the case of Henry G. Molaison (H.M.), an epileptic patient whose amnesia ensued unexpectedly following a bilateral surgical ablation of medial temporal lobe structures, including the hippocampus. The neuroanatomical extent of the 1953 operation could not be assessed definitively during H.M.'s life. Here we describe the results of a procedure designed to reconstruct a microscopic anatomical model of the whole brain
The hippocampus, a brain region implicated in memory and interpreting environmental contexts, has been the focus of a controversy in post-traumatic stress disorder. A new study has found that larger hippocampal volume is associated with recovery of PTSD.