Mary’s Monday Metazoan: the worthy sponge

HHMI The image shows approximately 16 choanocyte chambers, each about 30 micrometers in diameter—about the size of a pollen grain. The green color marks the flagella—hair-like structures that pump the water. The red color marks the cytoskeleton, which includes a structure called the collar (not visible here) that captures the prey. The light-blue regions mark the nuclei of individual choanocytes.

HHMI

The image shows approximately 16 choanocyte chambers, each about 30 micrometers in diameter—about the size of a pollen grain. The green color marks the flagella—hair-like structures that pump the water. The red color marks the cytoskeleton, which includes a structure called the collar (not visible here) that captures the prey. The light-blue regions mark the nuclei of individual choanocytes.

The brain is a complex and funny thing

Can you generate the illusion that your mind has left your body? This woman can.

After a class on out-of-body experiences, a psychology graduate student at the University of Ottawa came forward to researchers to say that she could have these voluntarily, usually before sleep. “She appeared surprised that not everyone could experience this,” wrote the scientists in a study describing the case, published in February in Frontiers in Human Neuroscience.

So what does the modern researcher do when someone has a weird perceptual sensation? Stick their head in an MRI and look at what’s happening.

To better understand what was going on, the researchers conducted a functional magnetic resonance imaging (fMRI) study of her brain. They found that it surprisingly involved a “strong deactivation of the visual cortex.” Instead, the experience “activated the left side of several areas associated with kinesthetic imagery,” such as mental representations of bodily movement.

Her experience, the scientists wrote, “really was a novel one.” But just maybe, not as novel as previously thought. If you are capable of floating out of your body, don’t keep it to yourself!

OK, I won’t. I used to be able to do that. When I was roughly 5 to 7 years old, and with declining frequency in years afterwards, I experienced this phenomenon routinely, and it was exactly as described. As I was drifting off to sleep, I’d have this peculiar sensation of heightened kinesthesia — I’d be acutely aware of my body, where every limb was, and I’d also lose my other senses — my hearing was muffled, with a kind of low hum, and I wouldn’t be able to see anything. But at the same time, I also had an exaggerated consciousness of objects around me, so I’d literally feel like a small boy with an awareness expanding to fill the room, losing the disconnect between self and other. And then I’d fall asleep.

Even as a child, though, I didn’t describe it to myself as floating outside myself; I called them my “big head dreams”, because of the way my awareness of space increased. I might have been annoyed at my bedtime, but I didn’t will myself to float out into the living room and watch TV, ghostlike, with my parents. I saw it as an odd shift in the focus of my attention as I drifted off to sleep, a kind of hallucination, nothing more.

I enjoyed the sensation and would voluntarily succumb to it, but it occurred less often as I got older. Probably the last time I experienced it was in my teens, but I still vividly recall what it felt like.

It was not out-of-body travel. Rebecca Watson has a reply to the article, and clarifies for the gullible that no, scientists aren’t studying out-of-body experiences, they’re looking at sensory processing and mental imagery.

The word “hallucination” appears ten times in the case study yet zero times in the Popular Science article. Because of this, a naive person who reads the PopSci article but not the original paper may walk away with the belief that the brain scans show what happens when a person actually leaves their body, as opposed to showing what happens when a person feels as though they are leaving their body. Again, the difference seems small but is actually quite large: the former describes a study that would be at home on an episode of Coast to Coast or Fringe or those episodes of Family Matters where Urkel did science experiments, and the latter would be at home in a scientific journal to be used as the basis for further study and experimentation.

Move along, it’s all mundane brain science. No spirits involved.

Crazy, obsessed, weird, perverse

arunachalam

Sometimes those are good descriptors. I read a happy story for a change this morning: it’s about Arunachalam Muruganantham, an Indian man who embarked on a long crusade to make…sanitary napkins. Perhaps you laugh. Perhaps you get a little cranky at a guy who rushes in to meddle in women’s concerns. And there’s some good reason to feel that way: he starts out with embarrassing levels of ignorance.

He fashioned a sanitary pad out of cotton and gave it to Shanthi [his wife], demanding immediate feedback. She said he’d have to wait for some time – only then did he realise that periods were monthly. “I can’t wait a month for each feedback, it’ll take two decades!” He needed more volunteers.

And then a man who didn’t realize until then that menstrual periods were monthly dedicated himself to years of tinkering and testing to build a machine to manufacture sanitary napkins, which just sounds perversely fanatical and obsessive. But it turns out to be a serious problem for poor women.

Women who do use cloths are often too embarrassed to dry them in the sun, which means they don’t get disinfected. Approximately 70% of all reproductive diseases in India are caused by poor menstrual hygiene – it can also affect maternal mortality.

So Muruganantham set out to teach himself everything about making napkins, and examining and testing used menstrual pads. His wife left him. He was regarded as a sick pariah in his town — the disgusting guy who plays with menstrual blood. He was going up against traditional taboos and public squeamishness.

But he succeeded! He designed and built simple machines that take cotton and cellulose at one end and churn out disposable sanitary napkins — and it was relatively cheap, easy to maintain, and could be distributed to rural India where the women themselves could make the necessaries. And then we learn about his philosophy…

Muruganantham seemed set for fame and fortune, but he was not interested in profit. “Imagine, I got patent rights to the only machine in the world to make low-cost sanitary napkins – a hot-cake product,” he says. “Anyone with an MBA would immediately accumulate the maximum money. But I did not want to. Why? Because from childhood I know no human being died because of poverty – everything happens because of ignorance.”

He believes that big business is parasitic, like a mosquito, whereas he prefers the lighter touch, like that of a butterfly. “A butterfly can suck honey from the flower without damaging it,” he says.

Oh my god, an idealist. I thought they were all extinct! And such a fine beautiful specimen, too! I’m going to steal that metaphor, as well, just because it is so lovely.

Most of Muruganantham’s clients are NGOs and women’s self-help groups. A manual machine costs around 75,000 Indian rupees (£723) – a semi-automated machine costs more. Each machine converts 3,000 women to pads, and provides employment for 10 women. They can produce 200-250 pads a day which sell for an average of about 2.5 rupees (£0.025) each.

Women choose their own brand-name for their range of sanitary pads, so there is no over-arching brand – it is “by the women, for the women, and to the women”.

And my heart grew two sizes that day.

Ain’t that the cutest little thing

nomad

I really do like Apple products, but there’s one thing about them that really annoys me: the ever-shifting arrangement of connectors. Every Mac device seems to have a slightly different array of ports, and you need different cables with every one. I’ve got four different video adapters in my travel bag. On my last trip, I brought the charging cable for my iPad…which doesn’t work with my iPhone, so my phone was dead on the second day. I can’t even use the power brick from my wife’s laptop on mine, and vice versa. So I’m always on the lookout for relatively cheap, non-Apple adapters of various sorts.

I like this one, from Nomad. It fits on my keychain! It’s tiny! I’ll have a connector for my iPad everywhere I go! Also, they sent it to me free on trial, so even better.

Of course, now watch: the next time I get a new laptop, it’ll have even more different cables. What I’m going to need is the Swiss Army Knife of cable adapters.

Say Rush Holt isn’t retiring, please

One of our precious rare godless representatives is retiring from office. And unsurprisingly, it turns out that he speaks with the voice of reason on his way out the door. He has an interview on Salon in which he exhibits an appropriate on science.

I am not saying that scientists are smarter or wiser than other folks. But there are habits of mind: you know, a deep appreciation of evidence; an ability to deal with probability and statistics, to be alert to cognitive biases and tricks that our minds play on ourselves; … a willingness to accept tentative conclusions and accept … the uncertainty of these scientific conclusions — not as reason for inaction, but a way of finding the best path forward …

You know, if we had a few hundred Rush Holts scrambling for high office, rather than a mob of incompetent teabaggin’ idjits getting elected, I’d have a lot more optimism for this country and humanity in general. But instead we get Ted Cruz, Steve King, Paul Broun, Rand Paul, Michele Bachmann, Tom Coburn, Louie Gohmert, Eric Cantor…jebus, stop me before I die of terminal cynicism.

How delusional can climate change denialists get?

The CEO of Apple, Tim Cook, was confronted by climate change denialists in a shareholders’ meeting; they demanded that he focus on return on investment and stop making changes to reduce emissions. MORE MONEY, please, and SCREW THE ENVIRONMENT. Cook made the right response.

What ensued was the only time I can recall seeing Tim Cook angry, and he categorically rejected the worldview behind the NCPPR’s advocacy. He said that there are many things Apple does because they are right and just, and that a return on investment (ROI) was not the primary consideration on such issues.

“When we work on making our devices accessible by the blind,” he said, “I don’t consider the bloody ROI.” He said that the same thing about environmental issues, worker safety, and other areas where Apple is a leader.

Nice words, but I’ll be happier when I see less exploitation of foreign workers, and let’s not have any illusions that tech corporations are friends to the planet. But I’ll acknowledge that at least Apple is taking a few steps in the right direction.

If you’re cynical enough, you could also wave away Cook’s response as self-promoting PR. But if you want a fun read, you should see the denialist’s counter-response. The National Center for Public Policy Research has issued an angry denunciation. I think they’re trying to persuade me to buy Apple stock.

“Although the National Center’s proposal did not receive the required votes to pass, millions of Apple shareholders now know that the company is involved with organizations that don’t appear to have the best interest of Apple’s investors in mind,” said Danhof. “Too often investors look at short-term returns and are unaware of corporate policy decisions that may affect long-term financial prospects. After today’s meeting, investors can be certain that Apple is wasting untold amounts of shareholder money to combat so-called climate change. The only remaining question is: how much?”

Wait…so the people who are all about profits now are complaining that Apple, by making some minimal efforts to address climate change, is failing to consider long term prospects? Madness. If that’s their question, I’ll just answer it with “Not enough.”

“Rather than opting for transparency, Apple opposed the National Center’s resolution,” noted Danhof. “Apple’s actions, from hiring of President Obama’s former head of the Environmental Protection Agency Lisa Jackson, to its investments in supposedly 100 percent renewable data centers, to Cook’s antics at today’s meeting, appear to be geared more towards combating so-called climate change rather than developing new and innovative phones and computers.”

Whoa. The NCPPR is making Apple sound like a completely green company. Are we sure this isn’t just a PR front for Apple?

You know, I really like Apple products, and I have a fine collection of widgets with the Apple logo on them, but I have no illusions: Apple is first and foremost a company that makes lots and lots of money. Quarterly revenue of $38 billion and quarterly profit of $8 billion sorta says that they are rather focused on selling phones and computers. That the denialists would even think to argue otherwise is a testimonial to how delusional they are.

“Tim Cook, like every other American, is entitled to his own political views and to be an activist of any legal sort he likes on his own time,” said Amy Ridenour, chairman of the National Center for Public Policy Research. “And if Tim Cook, private citizen, does not care that over 95 percent of all climate models have over-forecast the extent of predicted global warming, and wishes to use those faulty models to lobby for government policies that raise prices, kill jobs and retard economic growth and extended lifespans in the Third World, he has a right to lobby as he likes. But as the CEO of a publicly-held corporation, Tim Cook has a responsibility to, consistent with the law, to make money for his investors. If he’d rather be CEO of the Sierra Club or Greenpeace, he should apply.”

Interesting. I remember when the denialists would argue that the planet wasn’t warming (oh, they still do, sometimes); now they’re reduced to complaining that we’re pumping more energy into the atmosphere, but it’s simply not quite as much as the models predicted. That’s progress, I suppose.

I still don’t see how they can argue that climate change won’t be economically disruptive, or that it is imprudent to try and deal with long-term environmental changes before they actually demolish the markets they love so much.


A commenter has pointed out an article about that odd 95% claim. It turns out that if a scientist publishes a prediction with an upper and lower bound, and the reality turns out to be pretty darned close to the center of the distribution, you can just point at the upper bound and claim he exaggerated. Brilliantly dishonest.