Thursday, 21 April, 2016
Forget about wearing the balaclava and gloves during tonight’s heist, it’s not your facial features, or finger prints, that will give you away, but rather your brainwaves, or brain prints, that stand to reveal your identity to the powers that be (though possibly a tin-foil hat might help).
Researchers at Binghamton University in US recorded the brain activity of 50 people wearing an electroencephalogram (EEG) headset while they looked at a series of 500 images designed specifically to elicit unique responses from person to person – eg a slice of pizza, a boat, or the word “conundrum.” They found that participants’ brains reacted differently to each image, enough that a computer system was able to identify each volunteer’s ‘brainprint’ with 100 per cent accuracy.
neuroscience, psychology, science
Monday, 7 March, 2016
Fluid intelligence, being our ability to both remember, and make decisions quickly, declines from about age twenty. That’s not to say it’s all down hill from then. Apparently different regions of the brain peak at different times of our lives.
Crystallised intelligence, or facts and knowledge that we have built up, for instance, may not reach a height until we are about seventy.
“At any given age, you’re getting better at some things, you’re getting worse at some other things, and you’re at a plateau at some other things. There’s probably not one age at which you’re peak on most things, much less all of them,” says Joshua Hartshorne, a postdoc in MIT’s Department of Brain and Cognitive Sciences and one of the paper’s authors.
health, neuroscience, psychology
Monday, 22 February, 2016
What does neuroscience have to do with appreciating wine? Rather a lot as it happens, since it is our nervous systems that ultimately decide whether we like what were drinking or not.
We don’t just taste with our senses, we taste with our minds. And our minds are routinely affected by a host of influences of which, quite often, we are not even aware. Both our senses and our common sense can be led astray by any number of extraneous factors originating in what we know, or think we know, about the wine we are drinking. Figuring out how our minds work in such complex domains as the evaluation of wines – which are, among other things, economic goods – is the province of neuroeconomics.
alcohol, neuroscience, wine
Wednesday, 17 February, 2016
Contrary to popular belief, winter doesn’t necessarily act as a dampener on people’s emotional well being, with some recent research showing depression symptoms are no higher during the colder months, than they are at any other time of the year.
Likewise, winter has little impact on mental function, and may even enhance brain activity.
Meanwhile, during the vigilance task, brain activity was lowest in the winter and highest in the summer. Some media outlets have interpreted this as evidence for winter sluggishness, but as the participants’ performance and alertness was as good in winter as at other times of year, their reduced winter brain activity can actually be seen as a sign of improved efficiency. For comparison, consider research showing how the more expert people become at a task, the less brain activity is seen while they perform that task, as the brain becomes more efficient.
There might be something in that. We’ve had weeks of heat and humidity in this part of the world, which I’m sure has turned my brain to mush. I’ll stop short of saying I that wish it were winter though, as it will be soon enough.
climate, neuroscience, psychology
Wednesday, 20 January, 2016
Sleep paralysis is an unsettling experience, whereby you feel trapped in your apparently motionless body, for what seems like an inordinate amount of time. I have several brushes with the phenomenon each year, which is induced, ironically, by a lack of sleep, and also by lying on your back, which I had always believed was the best sleeping position.
Thankfully sleep paralysis, of itself, isn’t anything to worry about. It doesn’t point to some other nastier disorder, and the sensation is usually short lived. If that’s not enough though, a Meditation-Relaxation (MR) therapy has been developed, that you may like to try:
The simple treatment method, called Meditation-Relaxation (or MR) therapy, comes across as a nod to the mind-body connection – the sort of kumbaya “think good thoughts” exercise that might appeal to yogis more than post-docs. But, the simplicity of the treatment belies the immersive case reports and theories about parietal lobe disturbance that give it heft (and probably lab cred). Unlike treatment for nightmares, MR therapy can be performed during an attack to temper or potentially end it altogether.
health, neuroscience, sleep
Wednesday, 21 October, 2015
Writer’s block may come about as a result of an inability of certain brain regions to fire on all cylinders when required. I thought I’d adopt a metaphorical stance just there, since writer’s block isn’t afflicting me. Right now. If inactivity in a brain region is at the root of the problem, who knows, maybe a pill will soon come along to remedy the situation. We live in hope.
In the meantime, here are a few things to try, should the dark shroud of writers block have enveloped you:
- Read someone else’s writing, some inspiration might help
- Break the work down into pieces
- Write something, anything, without stopping
- Plan breaks into your writing schedule
- Don’t procrastinate… although that’s easy to say
neuroscience, psychology, writing
Friday, 2 October, 2015
Interruptions are worse than a nuisance at the best of times, and a lost train of thought occasioned by a telephone call or whatever, may not only mean a lost idea, but can also impact on productivity. And that can begin to carry a financial cost, if it happens often enough. So, what to do? Eliminate interruptions? Good luck with that.
Scientists however think it may be possible, by way of electrical stimulation to the appropriate region of the brain, to counter the effects of interruptions, thereby leaving the brain where it left off, so to speak, and able to process whatever task it was working on, as if nothing had happened. And all, maybe, from the comfort of your open plan office cubicle.
So Blumberg and his colleagues recently decided to apply electrodes over one part of the brain that’s known to be active in shaping attention. And this area – it’s called the prefrontal cortex – plays a very important role in directing how we pay attention to different things. And the electric stimulation gave this area a little boost. The researchers then gave volunteers different tasks, interrupted them and then measured how quickly they could refocus their attention after the interruption.
neuroscience, productivity, psychology
Tuesday, 5 May, 2015
Surely thinking, as in what we all do everyday, shouldn’t come with a government health warning? Apparently though thinking, and other mental activities, may promote the growth of certain tumours, in some regions of the brain. What a truly alarming prospect…
That’s the conclusion of a paper in Cell published Thursday that showed how activity in the cerebral cortex affected high-grade gliomas, which represent about 80 percent of all malignant brain tumors in people. “This tumor is utilizing the core function of the brain, thinking, to promote its own growth,” says Michelle Monje, a researcher and neurologist at Stanford who is the paper’s senior author.
disease, health, neuroscience
Wednesday, 5 November, 2014
If you’ve ever felt that your stomach is somehow trying to communicate with you, that may be exactly what is happening. It seems our digestive system is host to our enteric nervous system (ENS), and its function is not solely restricted to matters of digestion:
Embedded in the wall of the gut, the enteric nervous system (ENS) has long been known to control digestion. Now it seems it also plays an important role in our physical and mental well-being. It can work both independently of and in conjunction with the brain in your head and, although you are not conscious of your gut “thinking”, the ENS helps you sense environmental threats, and then influences your response. “A lot of the information that the gut sends to the brain affects well-being, and doesn’t even come to consciousness,” says Michael Gershon at Columbia-Presbyterian Medical Center, New York.
biology, health, neuroscience
Friday, 24 October, 2014
It happens too often, we agonise over a decision, and then tear our hair out when it becomes apparent we chose the wrong course of action. It could be then that looking into a mirror should be part of the decision making process… seemingly the larger the pupils of our eyes at such a time, the more likely it is we are making the wrong choice.
This is because pupil size is a measure of a person’s arousal: the more aroused they are feeling, the wider their pupils are and the worse they perform on the test. As with many things in life, the ideal level of arousal for most tasks is somewhere in the middle: when people’s arousal levels are low they are bored and when they are too high, they can’t concentrate.
neuroscience, psychology, well being