Humans may have a brain-deep aversion to income inequality

Paul Raven @ 03-03-2010

… or at least that’s the case according to researchers at CalTech, who’ve been using fMRI to examine how the human brain responds to rewards [via Freakonomics; image by jsmjr].

… what was unknown was just how hardwired that dislike really is. “In this study, we’re starting to get an idea of where this inequality aversion comes from,” he says. “It’s not just the application of a social rule or convention; there’s really something about the basic processing of rewards in the brain that reflects these considerations.”

The brain processes “rewards”—things like food, money, and even pleasant music, which create positive responses in the body—in areas such as the ventromedial prefrontal cortex (VMPFC) and ventral striatum.

Procedural and methodological stuff follows, so let’s skip to the kicker:

As it turned out, the way the volunteers—or, to be more precise, the reward centers in the volunteers’ brains—reacted to the various scenarios depended strongly upon whether they started the experiment with a financial advantage over their peers.

“People who started out poor had a stronger brain reaction to things that gave them money, and essentially no reaction to money going to another person,” Camerer says. “By itself, that wasn’t too surprising.”

What was surprising was the other side of the coin. “In the experiment, people who started out rich had a stronger reaction to other people getting money than to themselves getting money,” Camerer explains. “In other words, their brains liked it when others got money more than they liked it when they themselves got money.”

“We now know that these areas are not just self-interested,” adds O’Doherty. “They don’t exclusively respond to the rewards that one gets as an individual, but also respond to the prospect of other individuals obtaining a reward.”

That’s a lovely interpretation that I’d dearly love to believe in, and I have not even a fraction of the medical knowledge I’d need in order to attempt to refute it, nor refute the way the research was framed.

So instead I’ll pose a question: if we’re so hardwired to loathe income inequality, and those starting with greater fortunes are supposed to enjoy seeing others rewarded more than themselves, why exactly is income inequality such a widespread feature of almost every culture on the planet?


Neurocapitalism

Paul Raven @ 23-02-2010

Move over, neurocinematicsneurocapitalism reaches far beyond the theatre and focus group in its all-pervasive influence! Well, not quite, but Martin Börjesson responds to an article that uses the term as its title in order to make a point about the increasing ubiquity of neuroscience and the effects that it will have on every aspect of our lives, be they public or private:

The real reason why neurophysiological knowledge will have huge impact is rather that we are heading into a world where 1st person experiences, emotions and perspective will dominate. This shift is very well matched to what neurophysiology is promising: e g to solve people’s (perceived) disorders and fix (perceived) shortcomings, but also to boost experiences and create (artificial) peace of mind. Institutions will, part from selling all the neuro-based drugs, devices and services to people, use the new knowledge to both manipulate people but also get new insight in what people wants in order to be able and develop and market products and services more efficiently and effectively.

So even if we will not have a Neurocapitalism, we will most likely have a market in where many, many products and services will be based on or transformed by the new knowledge, ideas and innovations that stem from neurophysiological research.

As with basic psychology, knowledge is power; if you want to be able to resist the imminent finely-crafted importunings of anyone who can afford the right neurological research, you’ll need to learn which tricks they’ve found effective so as to protect yourself against them. But start small – why not learn a little about the emotional psychology of retail as a warm-up [via BoingBoing; image via Hljod.Huskona]?


IBM cat-brain sim actually a scam?

Paul Raven @ 24-11-2009

Branding the work of other scientists as fraudulent scams seems to be the flavour of the week. Remember IBM’s cat-sized brain simulation as mentioned last week? Well, it was pointed out by calmer minds than my own that I overstated the significance of the announcement… but Henry Markham, another scientist who’s also affiliated with IBM, has delivered a hearty broadside in the form of an open letter to IBM’s CTO:

… what IBM reported is a scam — no where near a cat-scale brain simulation [...] I am absolutely shocked at this announcement. Not because it is any kind of technical feat, but because of the mass deception of the public.

1. These are point neurons (missing 99.999% of the brain; no branches; no detailed ion channels; the simplest possible equation you can imagine to simulate a neuron, totally trivial synapses; and using the STDP learning rule I discovered in this way is also is a joke).

2. All these kinds of simulations are trivial and have been around for decades – simply called artificial neural network (ANN) simulations. We even stooped to doing these kinds of simulations as bench mark tests 4 years ago with 10’s of millions of such points before we bought the Blue Gene/L. If we (or anyone else) wanted to we could easily do this for a billion “points”, but we would certainly not call it a cat-scale simulation. It is really no big deal to simulate a billion points interacting if you have a big enough computer. The only step here is that they have at their disposal a big computer. For a grown up “researcher” to get excited because one can simulate billions of points interacting is ludicrous…

There’s more where that came from, too. As Wired points out, though, Markham isn’t exactly an innocent bystander in this matter, as he has his own high-level brain simulation project being run under the same company aegis


Old dogs and new tricks: web use good for the elderly brain

Paul Raven @ 23-10-2009

A silver surferYounger readers (or those with spousal units prone to nagging about excessive time spent in front of a computer) may wish to arm themselves with the news that internet use appears to restore and strengthen brain function, particularly in the elderly. In other words, surfing the web is keeping your brain young and fit. [via The End Of Cyberspace; image by mhofstrand]

For the research, 24 neurologically normal adults, aged 55 to 78, were asked to surf the Internet while hooked up to an MRI machine. Before the study began, half the participants had used the Internet daily, and the other half had little experience with it.

After an initial MRI scan, the participants were instructed to do Internet searches for an hour on each of seven days in the next two weeks. They then returned to the clinic for more brain scans.

“At baseline, those with prior Internet experience showed a much greater extent of brain activation,” Small said.

After at-home practice, however, those who had just been introduced to the Internet were catching up to those who were old hands, the study found.

Of course, this doesn’t take into account the theory that the structure of the web means we only ever get exposed to ideas that we already find agreeable, but I remain unconvinced of that notion, anyway. A brief glance at history shows that people were always perfectly capable of ignoring information that they found unpalatable, long before the internet (or even the printing press) existed…

But while you’re advising grandma to fire up Firefox, be sure to remind her that it’s an aid to learning, not a replacement for it. Recent research shows that we learn much more quickly if we take a chance to answer incorrectly before looking up the correct response… so try guessing before you Google it, in other words.


Geordi’s video-to-brain visor being built at MIT

Paul Raven @ 30-09-2009

Geordi LaForge stencil graffittiOK, so it’s going to be some time yet before Geordi LaForge video visors are high-street gadgets, but the underlying technologies are coming to fruition faster than I’d have ever expected. Via grinding.be we discover that a team at MIT have sussed a method for grafting a digital device to the optic nerve, enabling them to pipe electronically generated images direct the brain:

The implanted chip, according to the MIT team behind it, features a “microfabricated polyimide stimulating electrode array with sputtered iridium oxide electrodes” which is implanted into the user’s retina by a specially-developed surgical technique. There are also “secondary power and data receiving coils”.

Once the implant is in place, wireless transmissions are made from outside the head. These induce currents in the receiving coils of the nerve chip, meaning that it needs no battery or other power supply. The electrode array stimulates the nerves feeding the optic nerve, so generating a image in the brain.

The wireless signals, for use in humans, would be generated by a glasses-style headset equipped with cameras or other suitable sensors and transmitters tuned to the coils implanted in the head.

For now, however, the system has only been tried out in Yucatan minipigs. Three of the diminutive Mexican porkers have had the Star Trek/Gibsonesque implants for seven months, but as yet it’s difficult to tell just how well they work – as the pigs aren’t talking. The MIT boffins have fitted them with instrumented-up contact lenses to try to get an idea of what effects the implants have.

If you really need me to prompt you towards imagining the awesome and/or weird stuff that might happen as a result of this technology becoming readily available, I suspect you’re reading the wrong website. :) [image by striatic]


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