They achieved this by filling the vascular system of the brain with chemicals that are designed to halt the decaying process, and then froze it to -135 degrees celsius.

When the brain was warmed, the scientists found that the majority of its cell membranes, synapses and structures were still in tact and ready to function.

A statement read: “The key breakthrough was the quick perfusion of a deadly chemical fixative (glutaraldehyde) through the brain’s vascular system, rapidly stopping metabolic decay and fixing proteins in place by covalent crosslinks.”