[quote=“SmashTheState, post:1, topic:501503”]
Intelligent discussion only, please. QUOTE]
I’ll try, but I’ll doubt you’ll understand it:
There is a part of your brain called the cerebellum which looks very similar to a wrinkled, apple-shaped tumor that sits behind your brainstem. It’s the most active and possesses more neurons than any single region in your brain. The reason its particularly active is because the cerebellum is responsible for your spatial sense (e.g. am I sitting? am I standing? am I moving? am I doing a cartwheel?) and motor control.
When I talk about motor control, I speak of your ability to ride a bike, to play a Wii, to type on the keyboard, and, yes, even drive a car. When ethanol is consumed, the firing frequency and transmitter release of neurons in the cerebellum are reduced. This is done by two mechanisms. The first is that ethanol molecule itself facilitates the movement of a negative ion, called chloride, into cerebellar neurons, reducing their ability to transmit and receive messages to and from other neuronal circuits. The second method is that ethanol specifically cause cerebellar neurons to secrete a neurotransmitter called GABA, which reduces the activity of neighboring neurons.
Got that? Good. Now here’s where I’ll probably lose you. Remember when I told you that the cerebellum is most excitatory part of your brain? Well, it’s excitable because it has ongoing and incoming connections that go down your spinal cord, to other regions of the brain, and itself. It sends messages to both sides of the cerebellum to compare input where specialized cerebellar circuits, called Purkinje cells, act as a “comparator” between two distinct streams of information. This “loop” between the two lobes of the cerebellum allow for constant, **second-to-second **error-checking and maintence of balance. Pretty cool, right? Unfortunately, even minor cerebellar impairment grossly affects motor control.
Believe it or not, this is one law in which science is on its side. I know, I am shocked too. Consumption of ethanol has a statistically significant impact on driving performance.
Now for my opinion: Most drinking-and-driving laws don’t aim to get offenders off the road, instead, these laws are intended to generate revenue while, at the same, giving law-breakers a clear path forward to getting their license back. If law enforcement was serious about cutting drinking and drinking, they’d slash the monetary penalty and permanently remove their driving license.