The importance of grandmothers in the lives of their grandchildren has changed. The shared lifetime between grandmothers and their grandchildren has a fundamental effect on how grandparents and grandchildren influence each other. A study conducted by biologists, based on Finnish parish registers, indicates that, in this agrarian society, the shared lifetime of grandchildren and their […]

Researchers have analysed what happens in the brain when humans want to voluntarily forget something. They identified two areas of the brain — the prefrontal cortex and the hippocampus — whose activity patterns are characteristic for the process of forgetting. They measured the brain activity in epilepsy patients who had electrodes implanted in the brain […]

Why do some people comfortably walk between skyscrapers on a high-wire or raft the Niagara Falls in a wooden barrel whereas others freeze on the mere thought of climbing off escalators in a shopping mall? In a new study, scientists have found that a certain type of cells in the hippocampus play a key role. […]