This hilarious piece of pop science "news" deserves its place right at the top because it sets the right tone for what comes next: Brain Region Found that Does Absolutely Nothing at Collectively Unconscious.
Dr. Ahlquist was rather surprised at the finding. “During a pilot study we noticed that this small section of the cortex did not show differential activity in any of our manipulations. Out of curiosity, we wanted to see whether it actually did anything at all. Over the months that followed we tried every we knew, with over 20 different participants. IQ tests, memory tasks, flashing lights, talking, listening, imagining juggling, but there was no response. Nothing. We got more desperate, so we tried pictures of faces, TMS, pictures of cats, pictures of sex, pictures of violence and even sexy violence, but nothing happened! Not even a decrease. No connectivity to anywhere else, not even a voodoo correlation. 46 voxels of wasted space. I know dead salmons that are more responsive. It’s an evolutionary disgrace, that’s what it is.”
Gary Marcus in New Yorker: Neuroscience Fiction: What Neuroscience Really Teaches Us, and What It Doesn't. A good overview of the limitations of fMRI:
... [O]ur early-twenty-first-century world truly is filled with brain porn, with sloppy reductionist thinking and an unseemly lust for neuroscientific explanations. But the right solution is not to abandon neuroscience altogether, it’s to better understand what neuroscience can and cannot tell us, and why.
The first and foremost reason why we shouldn’t simply disown neuroscience altogether is an obvious one: if we want to understand our minds, from which all of human nature springs, we must come to grips with the brain’s biology. The second is that neuroscience has already told us lot, just not the sort of things we may think it has. What gets play in the daily newspaper is usually a study that shows some modest correlation between a sexy aspect of human behavior, with headlines like “FEMALE BRAIN MAPPED IN 3D DURING ORGASM” and “THIS IS YOUR BRAIN ON POKER”
But a lot of those reports are based on a false premise: that neural tissue that lights up most in the brain is the only tissue involved in some cognitive function. The brain, though, rarely works that way. Most of the interesting things that the brain does involve many different pieces of tissue working together. Saying that emotion is in the amygdala, or that decision-making is the prefrontal cortex, is at best a shorthand, and a misleading one at that. [...]
The sort of short, simple explanations of complex brain functions that often make for good headlines rarely turn out to be true. But that doesn’t mean that there aren’t explanations to be had, it just means that evolution didn’t evolve our brains to be easily understood.
Sunday, December 09, 2012
Posted by Abi. Posted at 11:04 AM