Archive for the ‘sci’ Category

Your corduroy jacket makes me cry

Friday, December 19th, 2008

I’m fascinated by this article in New Scientist about the discovery of the first cases of touch-emotion synaesthesia. Synaesthesia is when you experience a concurrent sensation along with the sensation you’re supposed to be feeling. So in this case, these two subjects feel emotions along with tactile sensations. So AW feels denim and gets depressed. HS touches dry leaves and feel disgusted — not disgust for the dry leaves, but a general feeling of disgust.

I’m always interested in how the brain processes its input. This sort of cross wiring is fascinating. And as a writer, is pure poetic fodder. I just read a novella about a color-sound synthaesthete in the current issue of Santa Monica Review called “Time Trials” by Gregory Spatz which was great so finding this article felt especially timely.

The thing is, that it’s something we all do — combine sensations. The proximity of those brain centers helps faciliate this. Those connections between the part of the brain that processes emotions and the part that processes tactile sensation are in our brains too, except ours are dulled and pruned away. Most of us have a fear of sharp objects, cuddling of soft pillows feels good, and silk feels sexy. But for us, these are just metaphors.

Can you imagine though, having some piece of fabric or some other material that you can just touch and it would make you happy. Not just feed good because it’s soft or pretty, but actually make you feel emotionally happy. That would be a hell of a rabbit’s foot.

Consuming our morbid thoughts away

Monday, June 9th, 2008

This doesn’t seem like new research because it seems to me that it’s a given that eating and shopping are relatively common coping mechanisms. It’s not unusual to hear stories about women addicted to shopping or food. I suppose men share these same problems but perhaps 1) less numerously, 2) less excessively, or 3) less conspicuously (but I haven’t researched this so I’m just stabbing blindly).

There was a recent New Scientist article about how thinking about death or dying can spur buying or consuming behavior. Students wrote essays about either their own death or a trip to the dentist (I think it’s funny that the options were death or dentist). After these kids wrote these essays, they found that people who had written about their death ate more cookies when given the opportunity, and also hypothetically purchased more items than those who wrote about the dentist.

But they also evaluated the students’ self esteem. The ones that had low self esteem and had to write about death were more excessive in their behaviors — ate more cookies, bought more things — as a way of “subconsciously escaping self awareness, which is heightened by thoughts of dying“. Those with high self esteem weren’t really affected by the thoughts of death.

For those affected, it wasn’t just the thought of their own death, but watching clips of death related news also stimulated this consumption. I love the quote at the end the piece which has one of the research professors (who, btw, has a PhD in psychology and is a professor of Marketing at his university) saying, gosh, I hope marketing folks don’t exploit this by placing food ads right after the news. Really? But isn’t that your job — to teach people how to best market their goods?

Thoughts of death make us eat more cookies full article at New Scientist

My favorite drug

Tuesday, June 3rd, 2008

My favorite hormone is back in the news! And this time it might cure some mental illnesses. Oxytocin stimulates pair bonding, affection, and breast milk. It helps you associate good feelings with social interactions and to be able to empathize with others. Mothers who have their oxytocin production interfered with stop nursing and caring for their young; children who are neglected in their youth grow up with stunted oxytocin receptors. Researchers now think that oxytocin could help those with mental illnesses that affect sociability or empathy (like autism).

It’s coincidental that I just read Above the Thunder and was thinking that I must have a lack of oxytocin in my system — my mothering and nurturing instincts are low.

It’s also coincidental that I was just talking to a friend of mine about how some really intelligent tech geeks are sort of autistic in that they aren’t very good socially — they can’t read signals, they don’t know how to interract with people, or sometimes even don’t know why they should bother.

Perhaps we could all use a little extra oxytocin: I love you, you love me; let’s take care of our family.

Our multiverse

Tuesday, September 25th, 2007

I’ve been obsessed with this New Scientist article I read recently about how there is not one universe, but there are multiverses. If you’re familiar with Schrödinger’s Cat, the multiverse theory implies that it doesn’t matter if the cat is dead or alive when you open the box, there is another universe where the cat is the opposite.

So in the simplest scenario, imagine the world you live in, the world you know — or at least the reality you know — and that there is another one of you that does the exact opposite of what you do. That’s the simple version because it implies binary choices. Now imagine how many multiverses there really must be. And then imagine what this means morally? The better a person I am in the universe I know, there must be another entangled me in different universe that is just as evil as I am good. So what’s to compell me to be good?

Last week, Ed and I were talking about an article he’d read about how this world could be a simulation. I found a few papers out there on the topic so I’m not sure exactly which one he read, but it stuck with me. And now I wonder — would you bother to run a simulation if the multiverse theory were true? Wouldn’t the simulation spawn the extra multiverses it needed, then what would be the point of observing one over another?

Then, there’s Dexter. I’m beginning to think that watching that show is actually taxing my mental health, but all of this ties in together. Dexter. What’s wrong with being a serial killer? If, say in another universe, you’re a doctor helping people live? There’s a scene in the episode called Circle of Friends, where Dexter is talking to another killer in jail and asks, What do you normally feel?, and his friend answers, Nothing. Fucking nothing at all. So empty. But in our multiverses, there’d be a him somewhere that didn’t feel empty. Would emptiness mean anything then?

Liberals are smarter

Sunday, September 9th, 2007

I mentioned (only semi jokingly) recently that liberals were smarter than conservatives. Now I have research that backs me up! Please note, though, that I admit that a) I have a slanted view of this issue, and b) am not a scientist. Real scientists in New York have shown that brain scans could eventually predict voting patterns.

Study participants had to push two buttons based on whether they saw the letter “M” or “W”, but each person was shown the same letter 80% of the time. For the other 20% of the time, conservatives only managed to hit the right button 53% of the time, while liberals were better at adapting to the change and hit the correct button 63% of the time. I personally think that being able to quickly adapt to change means you can think better on your feet, adjust arguments to be more appropriate for the conversation at hand, handle crises without melting down, better see someone else’s point of view (e.g. empathy), etc. Isn’t that a sign of greater intelligence?! I’d bet you Daniel Goleman would think so.

This finding supports another study that conservatives stick to what they know and are habitual creatures (I’d link to the article, but it’s only available for a fee). If you are stuck in your ways of thinking and unable to adapt, doesn’t that also mean you are less likely to evolve? And therefore less fit to survive? See how this all fits in with my theory?

The article also says that voting predilections could arguably be genetic — but what about learned behaviours? What about how neural pathways change with different stimuli? I can’t imagine that how you vote is *all* genetic. And another caveat (in my opinion) is that the study only contained 43 people — that seems like an awful small sampling of people. But again…I’m not a scientist.

Part cow, part human

Friday, May 18th, 2007

Conservative Americans are gonna love this: embryonic research gets a boost in the UK — there’s a new bill that would allow licensed researchers to create animal-human hybrid embryos. I especially love that this bill also includes getting rid of the Human Fertilisation and Embryology Authority at the same time.

Eureka!

Wednesday, June 7th, 2006

I’ve finally discovered what proteins are responsible for my post meal/post candy splurge wipe outs: orexin! I’ve been wanting to find out for years (not enough to try to look it up, but enough to be excited about finding this article two days ago :)

Thirst for young blood

Wednesday, February 16th, 2005

This headline is straight out of a sci-fi/horror film! Young Blood Makes Muscles Spry. It’s simultaneously funny and creepy.

Researchers at Stanford University have found that an infusion of young blood has significant benefits.

It’s about stems cells in old muscles being activated by blood from a younger host — so the environment those stem cells are in can affect their ability to be therapeutic. But what fodder for the imagination, too!

Loss of language

Wednesday, February 16th, 2005

I read this today on Nature about the ability to understand math grammar versus the ability to understand language grammar. Aphasia is a disorder caused by damage to the temporal lobe or higher up in the frontal lobe — usually caused by a stroke or other brain injury — that impairs a person’s linguistic abilities. Words don’t make sense — people with this disorder sometimes can’t speak or read or write or understand what’s being said to them. But they seem to be able to do mathematical calculations with pen and paper. They understand the Arabic numeral 30 when they see it on paper, even though they don’t understand the word thirty when they hear it or see it.

Grammar is an innate ability for humans. Research has shown that spontaneous language development, without external influence, develops grammatical rules within a single generation. And while some of the same cognitive regions are used for both language and math grammars, it appears that our brain’s ability to understand math grammar (think about the rules of nested equations) isn’t dependent on the same regions as linguistic grammar is. Which is why people who can’t understand language in any form can still do math.

It’s an interesting exercise — trying to imagine what the world would be like without words. How do you understand other people? How do you make sense of your senses? The things you hear, see, smell and feel — how do you organize that data into coherent and meaningful sets? I was reading about alexithymia in Goleman’s Emotional Intelligence. It’s the inability to express your emotions in words. People can’t explain what they’re feeling because they don’t understand what feelings are and don’t have the language to adequately describe them. Many people who suffer from it often go to the doctor because they think they’re ill or have some physical disorder when they feel upset, angry, or start crying. They can’t differentiate the physical sensations they feel when they feel intense emotions from physical pain.

Being able to talk about my emotions, to express myself in words, to appreciate the beauty of language when it’s used well — I can’t imagine living without these things. But I guess if the worst were to happen and I were to lose all of that — I’d still have math.

Broken heart syndrome

Wednesday, February 9th, 2005

This is interesting. Emotional trauma can result in cardiomyopathy, aka broken-heart syndrome, and is physiologically similar to a heart attack.

It’s especially interesting to me right now because I’m reading Emotional Intelligence and Goleman writes at length about the various physiological effects of peoples’ negative emotions. He cites study after study on such topics as the effects of anger on the heart, optimism and pessimism and how one’s tendency to be one or the other is a better prognosticator of recovey (for example from cancer or a major medical procedure) than a person’s physical condition, and hope and its affects on recovey as well. And it seems like this should be common knowledge, but you can’t base medical or scientific treatments on ‘common knowledge’.

I picked this book up after reading The Gift of Fear in which Gavin de Becker recommends we listen to our intuitions. Because our brains and our bodies are primed to survive — whether we are cognitive or not of what our impulses are or how our intuition makes us feel, there’s probably a good reason for it. He also cites example after example, sometimes chilling and sometimes simply creepy, of cases he’s worked on in which peoples’ intuitions accurately warned them of impending danger.

De Becker cites Emotional Intelligence several times and the first section of EI is the most interesting to me because it essentially explains the mechanics of the brain and how it generates an intuitive sense (or a ‘gut feeling’ if you prefer). The most interesting tidbit from that section is this: signals from our sensory organs get sent to the thalamus which then sends them on to the neocortex of our brains which processes those signals into something we understand. But, there is a shorter, single synaptic neuronal pathway between the thalamus and the amygdala, a primitive center of emotions, which allows the amygdala to receive a smaller subset of the signals sent to the neocortex and allows it to immediately process and generate an emotional response (when significant) *before* we fully understand what it is we’re experiencing or seeing, or why we feel the way we do. A telling example cited in the book is about a young man who sees a woman standing at the edge of the water looking down with a distressed look on her face, and before he knew what he was doing, he’d jumped into the water to save a child who’d fallen in.

Our brains are endlessly interesting little things. So are our hearts. Today’s Nature, along with the article about cardiomyopathy, also has an article about the regenerative ability of certain heart cells and how this could potentially help patients with heart attacks.

Predicting your fast food order

Wednesday, September 29th, 2004

I love this! A bunch of CMU guys got together and formed a company called HyperActive Technologies (their crappy flash site doesn’t work in FireFox on the Mac) and they’ve created a product called HyperActive Bob that predicts fast food orders based on the cars driving into the lot. Bigger cars, more food and a tendency towards kids meals, chicken nuggets and french fries; smaller cars means more hamburgers. The initial trial was at a McDonald’s in Chippewa, Pennsylvania, but they’ve got them in 7 McDonald’s and a Burger King and a Taco Bell in Pennsylvania, Ohio and Florida now.

Advanced Interfaces, also of Pennsylvania, has a similar, but more advanced technology. It records images of people entering a restaurant and makes inferences based on gender and age. Women like salads, men like meat. You get the idea.

All this, of course, immediately makes me think about the privacy implications
of all these cameras on rooftops and doorways. My guess is that they’re not storing these recorded images indefinitely, just long enough to make the calculations and update cook orders. But what’s to say they won’t? Advanced Interfaces has a video mining service for customers to send in hours and hours of recorded video tape for analysis. So, hypothetically, you could be recorded on videotape entering your favorite retail shop or restaurant, and then that footage could get sent to AI. A human being isn’t watching all that video. A human might not ever see any of that video footage, but eventually widely available imaging technology could be sophisticated enough to be able to make out who you are. In any given geographical area, someone somewhere — human or computer, could piece together your entire daily, weekly, monthly schedule. It’s a hypothetical, but certainly not a far fetched one.

A part of me finds this creepy, and a part of me is fascinated by the marketing aspect of all this information. And how easily you can predict behavior and influence it.

Virtual brokers

Tuesday, September 28th, 2004

Another interesting tidbit (no online article to link to)…a physicist and a mathematician at the University of Oxford designed a model that predicts the stock market. They equipped multitudes of intelligent agents with strategies that real life traders use to make decisions, then ran the model using historical stock market data, tweaked the agents so that predictions were more in line with the market’s actual behavior, and now they’re using it to predict the stock market and they claim it’s accurate to the minute! And the model can be used to mimic other multi-component systems like medicine, using cells as agents, or ecosystems. A friend of mine was working on something along these lines…I wonder if he’s still working on it and how he’s doing :)

I always thought that seemingly chaotic systems had predictability in them, but it still seems surreal that you can predict the stock market. Wouldn’t you be filthy rich?

Name recognition

Tuesday, September 28th, 2004

I was reading the new New Scientist and saw a quote from this guy I went out on a date with months and months ago. He was a graduate student at Berkeley studying genetically modified maize. And it’s sort of cool to recognize someone’s name in a magazine you religiously read. Because even if he’s not a celebrity, he sort of becomes one at that moment. It made me think of this article I read months ago on scanning the brain to predict a person’s behavior in economic games. It was a long ass Newsweek article about how, for humans, the emotional and rational parts of their brain affect their decisions, and how primates appeared to be hard wired to act according to mathematically derived formulas of economy.

The monkeys used Berry Berry juice as their currency. And looking at a “celebrity” monkey was worth paying for:

Male monkeys have a distinct dominance hierarchy, and Platt has found they will give up a considerable quantity of fruit juice for the chance just to look at a picture of a higher-ranking individual.

So it makes sense that humans do it, too — because we do things like pay to go to movies, buy magazines and cable tv to see celebrities, pay for expensive dinners with politicians. And “celebrity” is subjective. Your celebrities might be actors or politicians or scientists or writers or musicians or tech geeks. Whatever your thing is, there’s someone you consider a celebrity.

There’s been a lot of research in the last few months about predicting behavior. And there’s almost always a mention of what this means for marketing. Seems like in the end, we’re all paying to look like or live like a celebrity. Whoever that celebrity is.

The end of that long article makes some interesting notes about the differences in the decision making process in men and women. Which I think is funny because I was just thinking about this article the other day when I was going over how long it took me to come to my final decisions — even after I’d already made them.

Urine sniffing dogs

Thursday, September 23rd, 2004

Taking advantage of dogs’ innate desire to sniff at urine, scientists and trainers in the UK teamed up to form a cancer sniffing dog team. At a 41% success rate, they did pretty well. One sample was consistently identified by the dogs as coming from a cancerous bladder though it came from a donor without bladder cancer — a reexamination found a kidney tumor instead.

Carnivorous robots

Monday, September 20th, 2004

I was just reading about EcoBot II, the fly eating robot. It’s got 8 microbial fuel cells that flies get sucked into. The chitin exoskeleton gets broken down into glucose, the bacteria break up the glucose and generate electrons to power EcoBot II with electricity. On a full stomach (8 flies — one in each fuel cell), it can go for 5 full days. But it takes 12 minutes to generate enough electricity for it to walk one 2cm step. That’s 5 steps and hour, 120 steps a day, 600 steps in 5 days. It’s probably not getting too far on a full stomach. But imagine if you could go for 5 days on a single meal..

The predecessor to EcoBot II was SlugBot, which hunted for slugs using its imaging systems. But its methane-based system took too long to power up. And EcoBot II draws its food to itself by reaking of sewage. Saves itself all that hunting and gathering time.

Dreamless

Tuesday, September 14th, 2004

Dreamless woman feels fine. Dreams are fascinating. There is a load of research material on sleep, but not so much on dreams. How the brain functions is a fascinating subject of its own, but dreams have all sorts of nonscientific associations with them. There are prophetic, mythic, romantic notions about dreams. They’re scary; they’re sweet. I had two bad dreams last night. They both stemmed from what Ed says is my intense fear of rejection. Sometimes when I’m thinking really hard about someone, I dream about being rejected by that person. And they’re almost like nightmares.

Experimenting on primates

Wednesday, August 25th, 2004

I was reading this article in New Scientist (do I read anything else anymore? Those things come so fast in the mail…I’m halfway through one and the next one arrives) on research done with monkeys. And I’m an animal rights supporter. I don’t think animals should be mistreated, experimented on unnecessarily, tortured, maimed, hunted for sport, etc., etc. But I’m also a huge proponent of research and testing and making new discoveries. It isn’t even really a question — given the option of testing new drugs or procedures on animal or human subjects, no one is going to say, let’s test experimental drugs on humans. No one.

You should’ve seen this photo in the magazine. This sad, little monkey sitting in the corner. For a moment, I become really emotional about the animal imagining what it must undergo. But I completely anthropomorphize, too. Because that monkey isn’t necessarily sad. I project those emotions onto him. The editor chose that photo for that layout specifically for that effect. That isn’t to say that I don’t think monkeys and other animals don’t suffer some sort of trauma when they undergo tests and drug trials and various invasive and non-invasive procedures. I’m sure they do.

The quandry, I think, is balancing the needs of research against being as humane as possible. How do we ensure that we have enough resources to conduct all the research we need in order to progress in our scientific endeavors, and still treat animals humanely by decreasing stress, minimizing physical pain, and limiting use in trials. As a concrete example, we can talk about re-use of monkeys in research. Primates are currently in short supply. Often they are re-used in multiple experiments. From a humanitarian point of view, we want to limit the amount of suffering it undergoes by using it for one trial/one experiment, but from the same point of view, we want to limit the number of monkeys and apes being used for experiments. Where do we draw the line between those two? Do we experiment again and again with the same resource? Or bring in new resources? And at what point we bring in new resources? After one trial? Two, three? Four if they’re minor, two if the experiments are particularly harrowing?

Whatever the balance, it sounds like there should be something done to change the current situation — not only so that we can keep on conducting these trials, but also so that we can learn as much as possible out of the trials we do. There is a bad shortage of primates available and attainable for experimentation. AIDS research, for example, isn’t moving as fast it could. The Indian rhesus monkey is virtually unavailable, but critical in AIDS research because these Indian origin monkeys develop AIDS from SIV as humans do from HIV.

More data should be gathered on primates while in experimentation — history of the primate (what other trials, if any, has it been a part of? where did it come from?), gender, health, daily living arrangements (do they get exercise? have room to move around? live in a tiny cage?). These things are just as important when evaluating the data from experimentation — these can have an impact on that data, yet it’s not kept track of or published. If a monkey is stressed out from having been transported halfway around the world from a breeder to a lab, surely his immune system is suppressed, his biochemical balance is slightly altered — these things affect one’s reaction to a drug or ability to heal. It isn’t trivial. How can you ignore it?

Robots in the news

Thursday, August 19th, 2004

Robotic surgery: telerobotic laparoscopic operations performed on 22 people in the last six months in Canada. Looks like Dr. Anvari, who performed the world’s first telerobotic assisted surgery about a year and a half ago in February 2003, continues his mission to prove the safety and feasibility of these procedures in the hopes of widespread adoption. It sounds like he’s succeeding at it, too.

And Seiko Epson creates the world’s lightest flying mircoboot. 12.6 grams with the battery installed — that’s less than half an ounce — and less than 1/32 of a pound. And it takes photos! It doesn’t seem to work that well yet, but it’ll get there. Here’s another article with a picture.

Evolutionary role of religion

Wednesday, August 18th, 2004

Interesting article by Dawkins. I read the article because I thought it would attempt to answer that question — what the purpose of religion was. What evolutionary advantage does belief in a religion give us? But it doesn’t really answer that question. A friend of mine pointed out that it doesn’t answer the question of the title so much as makes you think about the way we ask ourselves these questions. I like how Dawkins uses computer viruses as an analogy for religion.

On another religious note: _Cheap Complex Devices_. I’ve been meaning to write about this book because I found it so fascinating. You probably don’t want to read any more if you intend to read the book because I don’t want to spoil it for you. But I was really excited about the book when I got it and read the cover. I even read the forward and part of the intro before I read the story (I always do that afterwards so I don’t know too much going in). The meta story about the story is great in and of itself. But it’s not what the forward makes you believe it is — you get that much before you finish the story, but apart from the disappointment in that, it was still a fabulous read. An interesting and complex intermingling of sexual thoughts, religious thoughts, and computer thoughts — specifically, system level functioning.

What is it about the these basest of things that seem to inextricably combined? Sex and religion have been intertwined for as long as humans have been around. Sex has an obvious evolutionary role, and so does religion or it wouldn’t still exist. Is technology the next evolutionary step? As base and as fundamental as sex and god? Or is the mix more cultural — that these things are so pervasive now and so personal that writing about one leads to writing about the other? I think it’s both. I’ve been meaning to research this topic more…will write more when I do.

Francis Crick passes away

Thursday, July 29th, 2004

God, 51 years ago, Watson and Crick published their paper on the molecular structure of DNA in Nature. Francis Crick, 88 years old, passed away last night in La Jolla.