The brain uses special neurons called time cells to organize our memories of events and experiences. But, despite their name, these cells don't work like a clock.
Scientists have created detailed maps of the brain area that controls movement in mice, monkeys and people. The maps could help explain human ailments like Alzheimer's and Lou Gehrig's disease.
Structures inside healthy brain cells nimbly move from one state to the next to perform different functions. But in certain degenerative brain diseases, scientists now think, that process gets stuck.
The brains of birds and mice continue to produce new nerve cells in the hippocampus throughout life. But research now suggests the human brain stops doing this around adolescence.
Scientists have identified the brain cells that detect pitch changes in speech, allowing us to understand whether someone is asking a question or making a statement.