Drink more, and as you go over the drink-driving limit – which is 80 milligrams of alcohol per 100 millilitres of blood (80mg%) – you begin to get the double whammy: as well as stimulating GABA, the alcohol starts to block your glutamate receptors. And remember, glutamate is the neurotransmitter that keeps you awake. As your level gets higher, you’re starting to become properly drunk. If you reach the point of 150mg%, you’ll also start to lose the capacity to lay down memory. This is a blackout. As
