Infants at increased risk for developing autism show significantly faster amygdala growth between 6 and 24 months, well before classic symptoms appear.
A type of neuron in the hypothalamus that regulates transitions between sleep and wakefulness becomes hyperexcitable with age, lowering the threshold that triggers it to fire and rouse the rest of the brain, a study in mice shows.
The first recording of a dying human brain suggests our lives really may flash before our eyes, say researchers, with the same brain activity patterns found during dreaming and remembering.