The activity in different parts of their brains also became more synchronised. Their low-gamma waves, in particular, became twice as synchronised when they were in their near-death state than when they were anaesthetised or awake. These features have been linked to conscious perception in earlier studies.
Tug of war is a sport that directly puts two teams against each other in a test of strength: teams pull on opposite ends of a rope, with the goal being to bring the rope a certain distance in one direction against the force of the opposing team's pull.
Limited war. A limited war is one in which the belligerents do not expend all of the resources at their disposal, whether human, industrial, agricultural, military, natural, technological, or otherwise in a specific conflict. This may be to preserve those resources for other purposes, or because it might be more difficult for the participants to use all of an area's resources rather than part of them. Limited war is the opposite concept to total war.