At the same time, the prefrontal cortex—responsible for logic, decision-making, and calming the amygdala—grows weaker. That’s the crux of anxiety brain changes: a stronger fear response and ...

What distinguishes the mammalian brain from that of other vertebrates ... set spans a cubic millimetre of mouse cortex, about the size of a small poppy seed. Yet it contains an astonishing 84,000 ...