Posts tagged: Brain Hacking
It started as a headache, but soon became much stranger. Simon Baker entered the bathroom to see if a warm shower could ease his pain. “I looked up at the shower head, and it was as if the water droplets had stopped in mid-air”, he says. “They came into hard focus rapidly, over the course of a few seconds”. Where you’d normally perceive the streams as more of a blur of movement, he could see each one hanging in front of him, distorted by the pressure of the air rushing past. The effect, he recalls, was very similar to the way the bullets travelled in the Matrix movies. “It was like a high-speed film, slowed down.” […]
What’s more, Valtteri Arstila at University of Turku, Finland, points out that many of these subjects also report abnormally quick thinking. As one pilot, who’d faced a plane crash in the Vietnam War, put it: “when the nose-wheel strut collapsed I vividly recalled, in a matter of about three seconds, over a dozen actions necessary to successful recovery of flight attitude”. Reviewing the case studies and available scientific research on the matter, Arstila concludes that an automatic mechanism, triggered by stress hormones, might speed up the brain’s internal processing to help it handle the life or death situation. “Our thoughts and initiation of movements become faster – but because we are working faster, the external world appears to slow down,” he says. It is even possible that some athletes have deliberately trained themselves to create a time warp on demand: surfers, for instance, can often adjust their angle in the split second it takes to launch off steep waves, as the water rises overhead.
Full Story: BBC: The man who saw time stand still
The New York Times reports on fMRI studies on what exactly goes on in the brain while people write. The first version of the study was conducted with amateur writers. The second was conducted with experienced creative writers. The researchers found that there were differences between the brain regions used while brainstorming and actually writing, and between the amateurs and professionals. But not everyone is impressed with the research:
Steven Pinker, a Harvard psychologist, was skeptical that the experiments could provide a clear picture of creativity. “It’s a messy comparison,” he said.
Dr. Pinker pointed out that the activity that Dr. Lotze saw during creative writing could be common to writing in general — or perhaps to any kind of thinking that requires more focus than copying. A better comparison would have been between writing a fictional story and writing an essay about some factual information.
Full Story: New York Times: This Is Your Brain on Writing
Wired reports on DIY transcranial direct current stimulation, and why the science behind it might not be all it’s cracked up to be:
It’s a rare thing for a scientist to stand up in front of a roomful of his peers and rip apart a study from his own lab. But that’s exactly what Vincent Walsh did in September at a symposium on brain stimulation at the UC Davis Center for Mind and Brain. Walsh is a cognitive neuroscientist at University College London, and his lab has done some of the studies that first made a splash in the media. One, published in Current Biology in 2010, found that brain stimulation enhanced people’s ability to learn a new number system based on made-up symbols.
Only it didn’t really.
“It doesn’t show what we said it shows; it doesn’t show what people think it shows,” Walsh said before launching into a dissection of his paper’s flaws. They ranged from the technical (guesswork about whether parts of the brain are being excited or inhibited) to the practical (a modest effect with questionable impact on any actual learning outside the lab). When he finished this devastating critique, he tore into two more studies from other high-profile labs. And the problems aren’t limited to these few papers, Walsh said, they’re endemic in this whole subfield of neuroscience.
Neuroskeptic points to a recent meta-study of neuroimaging critiques conducted by Martha Farah at the University of Pennsylvania. The blog highlights Farah’s conclusion:
Inferences based on functional brain imaging, whether for basic science or applications, require scrutiny. As we apply such scrutiny, it is important to distinguish between specific criticisms of particular applications or specific studies and wholesale criticisms of the entire enterprise of functional neuroimaging.
In the first category are criticisms aimed at improving the ways in which imaging experiments are designed and the ways in which their results are interpreted. Uncontrolled multiple comparisons, circular analyses and unconstrained reverse inferences are serious problems that undermine the inferences made from brain imaging data. Although the majority of research is not compromised by any of these errors, a substantial minority of published research is, making such criticisms both valid and useful.
In contrast, the more sweeping criticisms of functional imaging concern the method itself and therefore cast doubt on the conclusions of any research carried out with imaging, no matter how well designed and carefully executed. These more wholesale criticisms invoke the hemodynamic nature of the signal being measured, the association of neuroimaging with modular theories of the mind, the statistical nature of brain images, and the color schemes used to make those images seductively alluring.
As mentioned earlier, each of these criticisms contains an element of truth, but overextends that element to mistakenly cast doubt on the validity or utility of functional neuroimaging research as a whole. None of the criticisms reviewed here constitute reasons to reject or even drastically curtail the use of neuroimaging.
The full paper is here.
(via Boing Boing)
Black box recorders are a common feature in aircraft. They sit there keeping track of everything that is happening. Then, if something goes wrong the information can be reviewed to piece together exactly what happened and form a view of the events that may otherwise have been lost.
Now the Pentagon is attempting to develop a similar system for use in humans, and in particular soldiers who have suffered brain damage. If they could be fitted with a black box in their brain, then it may be possible to trigger memories surrounding a traumatic event and overcome memory loss quickly and easily. […]
It’s common to see memory loss in someone suffering brain damage, but they can also forget their personal details and skills, such as remembering their own name, who their family is, and even how to drive. As well as stimulating the brain to recover recent memories, it is hoped the implant would be able to recall common information and therefore help them remember who they are.
In this episode Chris Dancy and talk with authors Bill Whitcomb and Taylor Ellwood about their new book The Book of Good Practices:
KF: I kind of see this book as a users’ guide to the human brain. The brain, the missing manual; that sort of thing. What is the book, in your own words? Maybe we’ll start with Taylor then Bill can chime in.
TE: First of all, I want to acknowledge that Bill is kind of the originator of the book. He had already been working on it for a while and I want to give a little history here, just because I think it speaks to what the book’s about. He came to me about four or five years ago and said, “I’m working on this book. I’m kind of hitting a place where I’m feeling really blocked. Would you be willing to help me co-write it because you’ve done some similar stuff with some of your other writing?” I thought it over and I said, “Yeah, sure.”
It’s been a long road to get this book put together. I mean, it’s turned into three e-books and a workbook which speaks to it. So what do we see it as? I think I see it as a catalog of certainly stuff related to the brain but really behaviors and actions that can come out of being more aware of the brain and how it programs a lot of our behavior. That’s my take on it. Bill, what would you say to that?
BW: Well, I think we’ve tried to produce a taxonomy, a way of categorizing behavioral practices, things that can be described in purely behavioral terms; that actually have a measurable neurological effect on people, physiological effect on people. Things that you can learn to do that could be said to truly impact your skills as far as fundamental human activities; things like concentration, memory, metabolism; things that impact pretty much anything you would want to do in your life.
We’ve tried to abstract that as much as possible from any specific tradition because in many ways, the traditions these things come out of have a tendency to separate out people as much as they bring them in. Someone will say, “Well, psychology is too cold or inhuman for me” or “I don’t do Eastern mysticism” or “That’s too fuzzy and spiritual”, any reason to not try the thing themselves, whereas in behavioral terms, these are things that you can learn to do that will change your level of skill as a human being.
Download and Full Transcript: Mindful Cyborgs: Episode 21 – Orienting Pop Culture Magic: Mindfulness GPS and the Maps of Indeterminate Destiny
My colleague Bob McMillan reports:
Conor Russomanno and Joel Murphy have a dream: They want to create an open-source brain scanner that you can print out at home, strap onto your head, and hook straight into your brainwaves.
This past week, they printed their first headset prototype on a 3-D printer, and WIRED has the first photos.
Bootstrapped with a little funding help from DARPA — the research arm of the Department of Defense — the device is known as OpenBCI . It includes sensors and a mini-computer that plugs into sensors on a black skull-grabbing piece of plastic called the “Spider Claw 3000,” which you print out on a 3-D printer. Put it all together, and it operates as a low-cost electroencephalography (EEG) brainwave scanner that connects to your PC.
I wrote for Wired about computer chips designed specifically for building neural networks:
Qualcomm is now preparing a line of computer chips that mimic the brain. Eventually, the chips could be used to power Siri or Google Now-style digital assistants, control robotic limbs, or pilot self-driving cars and autonomous drones, says Qualcomm director of product management Samir Kumar.
But don’t get too excited yet. The New York Times reported this week that Qualcomm plans to release a version of the chips in the coming year, and though that’s true, we won’t see any real hardware anytime soon. “We are going to be looking for a very small selection of partners to whom we’d make our hardware architecture available,” Kumar explains. “But it will just be an emulation of the architecture, not the chips themselves.”
Qualcomm calls the chips, which were first announced back in October, Zeroth, after the Isaac Asimov’s zeroth law of robotics: “A robot may not harm humanity, or, by inaction, allow humanity to come to harm.”
The Zeroth chips are based on a new architecture that radically departs from the architectures that have dominated computing for the past few decades. Instead, it mimics the structure of the human brain, which consists of billions of cells called neurons that work in tandem. Kumar explains that although the human brain does its processing much more slowly than digital computers, it’s able to complete certain types of calculations much more quickly and efficiently than a standard computer, because it can do many calculations at once.
Even the world’s largest supercomputers are able to use “only” one million processing cores at a time.
Dorian Rolston on lucid dreaming research:
Lucid dreaming is unusual and unstable, she insists, perhaps only “an exception, an accident.” She grants that regular dreaming may serve some critical biological function—nightly information processing, say, or bodily temperature control. But lucid dreaming “is not meant to be.”
In a more ruminative moment, Voss confessed that lucid dreams might offer a privileged view into the evolution of consciousness in the brain: progressing from the primitive activity of “a cold-blooded animal” during non-REM sleep, to the sparks of real cognition of “a rabbit or cat” during regular dreaming, to the peak of self-awareness, reasoning, and memory during lucid dreaming, in which the dreamer at last possesses “a human brain, a higher-order conscious brain.”
Full Story: Matter: The Dream Catcher
Previous studies have found that cannabis users were more likely to develop psychotic disorders than non-cannabis users, but were unable to determine a causal relationship between use of the drug and psychosis. A new study suggests that there is no causal link.
In the new study, by comparing families with and without a history of marijuana use, the Harvard researchers were able to address this question.
They recruited four groups:
-87 non-psychotic people who had used no drugs.
-84 non-psychotic people who had used marijuana.
-32 patients who had schizophrenia but hadn’t used drugs.
-76 patients with schizophrenia who had used marijuana.
They then looked at the relatives of those with schizophrenia in comparison to the relatives of those in the control groups.
The results showed an increased risk of developing schizophrenia in the relatives of patients who already had schizophrenia, whether or not those patients used marijuana.
This study, then, finds no evidence that marijuana is associated with developing schizophrenia.
Full Story: PsyBlog: Marijuana Does Not Cause Schizophrenia