Some time ago, Tracey J Shors, professor of psychology in the department of psychology and neuroscience at Rutgers University in America wrote in Scientific American that brain neurons are constantly regrowing. The more you exercise your mind the more neurons you grow – even in old age.
Apparently exercising the brain is much like exercising your muscles. OK, you can’t do press ups with the brain but you can get it bubbling like porridge by thinking hard.
New neurons come and go so that if you sprout a bunch of them after some heavy thinking but afterwards revert to watching television while drinking beer the new neurons will die off from neglect.
I have always been interested in the brain and often pop upstairs onto my cranium and talk to the boys in the various departments.
After reading Professor Shors article I popped upstairs and knocked on a door labelled “Pondering Division” and entered (not that I have to knock of course – after all I own the place).
Everybody leapt to their feet and tried to look busy.
I gave a boss-like nod of acknowledgement to those assembled before asking the Head of Pondering (I call him, Hop),“Hop, how’s the neuron situation up here?”
“They’re coming in slowly,” he said. “Every time you write a column three more come tumbling down the chute. On the rare occasion you write about something intelligent or that is rather creative, a whole lot of them can come down.”
I told him about scientists experimenting on rats and pigs and finding that mental exercise keeps the brain constantly topped up.
Then it occurred to me: “Why use rats and pigs to gauge what makes humans tick?” Five or six shiny neurons come rattling down the chute.
Hop said, “What would you rather they use – earthworms?”
As my mind grappled with this question a single shiny ball rolled out of the chute and rolled across to the floor.
I told Hop about cognitive neuroscience – even as I pronounced this 20 neurons came bouncing out – and I told him about the imminent advent of brainchips.
I explained how one day I could have a chip inserted into my brain and then, without using my fingers, I could operate my pc while eating a hamburger with both hands. One’s thoughts alone could activate one’s computer which would instantly reveal what you were thinking.
“It worries me,” I said. “What if you are having a terribly private thought and the boss walks in and sees your screen – or, worse still, what if one’s wife walks in?”
An avalanche of little balls emptied into the room so that workers were skidding about on them.
HOP said, “Don’t ask me, I just work here.”
Scientists dealing with neurons find that alcohol retards the growth of neurons and that physical exercise stimulates growth – though the neurons die if not used fairly soon.
We are born with countless billions but once a child starts passively watching TV or idly playing on a laptop for hours on end the neurons die and one becomes first a teenage turnip and later a parliamentarian.