Biggest brain map ever details huge number of neurones and their activity

Researchers have created the largest and most detailed wiring diagram of a mammalian brain to date, by mapping cells in a cubic millimetre of a mouse’s brain tissue. The high-resolution 3D map contains more than 200,000 brain cells, around 82,000 of which are neurons. It also includes more than 500 million of the neuronal connection points called synapses and more than 4 kilometres of neuronal wiring, all found in a tiny block of tissue in a brain region involved in vision.