Through the brain-imaging work at the Amen Clinics during the past 20 years with tens of thousands of people from 75 different countries, we have come to see that when your brain works right, you tend to be more thoughtful, playful, romantic, intimate, committed, and loving with your partner — all necessary things for great relationships.

When your brain has trouble, you are much more likely to be impulsive, distracted, addicted, unfaithful, angry, and even hateful — all things that undermine relationships.

Even though it feels genital, the vast majority of love and sex occurs in the brain. Your brain decides who is attractive to you, how to get a date, how well you do on a date, what to do with the feelings that develop, how long those feelings last, when to commit, and how well you do as a partner and parent. Your brain helps you be enthusiastic in the bedroom or drains you of desire and passion. Your brain helps you process and learn from a breakup or makes you vulnerable to depression or obsession.

Read the rest of the article here

By Catherine E. Myers, Ph.D.

Although we assume we can see everything in our field of vision, the brain actually picks and chooses the stimuli that come into our consciousness. A new study in the Association for Research in Vision and Ophthalmology’s Journal of Vision reveals that our brains can be trained to consciously see stimuli that would normally be invisible.

Lead researcher Caspar Schwiedrzik from the Max Planck Institute for Brain Research in Germany said the brain is an organ that continuously adapts to its environment and can be taught to improve visual perception.

“A question that had not been tackled until now was whether a hallmark of the human brain, namely its ability to produce conscious awareness, is also trainable,” Schwiedrzik said. “Our findings imply that there is no fixed border between things that we perceive and things that we do not perceive – that this border can be shifted.”

The researchers showed subjects with normal vision two shapes, a square and a diamond, one immediately followed by a mask. The subjects were asked to identify the shape they saw. The first shape was invisible to the subjects at the beginning of the tests, but after 5 training sessions, subjects were better able to identify both the square and the diamond.

The ability to train brains to consciously see might help people with blindsight, whose primary visual cortex has been damaged through a stroke or trauma. Blindsight patients cannot consciously see, but on some level their brains process their visual environment. A Harvard Medical School study last year found that one blindsight patient could maneuver down a hallway filled with obstacles, even though the subject could not actually see.

Schwiedrzik said the new research may help blindsight patients gain conscious awareness of what their minds can see, and he suggested that new research should address whether the brains in blindsight patients and people with normal vision process the information the same way.

“Our study suggests that it might in principle be possible for blindsight patients to recover some visual awareness, and thus our findings might open a venue for a new line of research and potential treatments for patients with acquired cortical blindness,” Schwiedrzik said.

Train your brain in new ways at Myfitbrain

Complex tasks like juggling produce significant changes to the structure of the brain, according to scientists at Oxford University.

In the journal, Nature Neuroscience, the scientists say they saw a 5% increase in white matter – the cabling network of the brain.

The people who took part in the study were trained for six weeks and had brain scans before and after.

Long term it could aid treatments for diseases like multiple sclerosis.

The team at Oxford’s Department of Clinical Neurology used a diffusion MRI which is able to measure the movement of water molecules in the tissues of the brain.

The signal changes according to how many bundles of nerve fibres there are and how tightly packed they are.

Changes in grey matter, where the processing and computation in the brain happens, have been shown before, but enhancements in the white matter have not previously been demonstrated.

The scientists studied a group of 24 healthy young adults, none of whom could juggle.
They divided them into two groups.

One of the groups was given weekly training sessions in juggling for six weeks and was asked to practice 30 minutes every day the other 12 continued as normal.

After training, the 12 jugglers could perform at least two continuous cycles of the classic three ball cascade.

Both groups were scanned using diffusion MRI before and after the training.

At the six week point, a 5% increase in white matter was shown in a rear section of the brain called the intraparietal sulcus for the jugglers.

This area has been shown to contain nerves that react to us reaching and grasping for objects in our peripheral vision.

There was a great variation in the ability of the volunteers to juggle but all of them showed changes in white matter.

The Oxford team said this must be down to the time spent training and practising rather than the level of skill attained.

Dr Heidi Johansen-Berg, who led the team, said: “MRI is an indirect way to measure brain structure and so we cannot be sure exactly what is changing when these people learn.

“Future work should test whether these results reflect changes in the shape or number of nerve fibres, or growth of the insulating myelin sheath surrounding the fibres.

“Of course, this doesn’t mean that everyone should go out and start juggling to improve their brains.

“We chose juggling purely as a complex new skill for people to learn.”

Dr Johansen-Berg said there were clinical applications for this work but there were a long way off.

She said: “Knowing that pathways in the brain can be enhanced may be significant in the long run in coming up with new treatments for neurological diseases, such as multiple sclerosis, where these pathways become degraded.”

Professor Cathy Price, of the Wellcome Trust Centre for Neuroimaging, said: “It’s extremely exciting to see evidence that training changes human white matter connections.

“This compliments other work showing grey matter changes with training and motivates further work to understand the cellular mechanisms underlying these effects.”

See original article here

Myfitbrain brain games

Multitasking is pervasive in our society, but that does not mean it is a good thing. When you multitask, you may think you are getting a lot done, but there’s a cost when the tasks compete for the same (and limited) cognitive resources (e.g., attention, working memory) and draw on the same brain circuitry. This is true, no matter how good you think you are at multitasking. There’s just too much competition for the same neural circuits and what you end up with is a compromise. Neither task is performed as well as it is when performed alone.

What are the effects of multitasking in the workplace? Multitasking may actually be counterproductive. It seems that e-mail, instant messaging, cell phones, and personal digital assistants (PDAs), which keep us all connected and allow many of us to do our jobs, can also diminish productivity.

A study by Basex, Inc., a knowledge-management research firm in New York, reported that knowledge workers (people whose work output is mainly informational in nature, e.g., creating documents, reports, studies, inventions, or patents) waste an average of two hours a day due to interruptions from e-mails, co-workers, and cell phones. Recovery time from each interruption can vary but it comes with a stiff price tag for the American economy: $650 billion every year.

How good are you at multitasking?   Try this:

Part I:
Take a blank sheet of paper and write on the top:

Multitasking is inefficient.

With a stopwatch or a watch with a second hand, start timing how long it takes you to recopy the phrase
Multitasking is inefficient.

There is a catch:
Every time you write down a letter in the phrase, on a line below the phrase, write down a corresponding number (beginning with 1).
See how long it takes you to write the phrase Multitasking is inefficient and the list of numbers from 1 to 25.

Write down your time for completion at the bottom of the page.

Part II:
Take another blank sheet of paper.  With a stopwatch or a watch with a second hand, start timing how long it takes to write the phrase

Multitasking is inefficient.

When you are finished writing the phrase, immediately write down the numbers 1 through 25 on a separate line.

Write down your time for completion at the bottom of the page.

Compare your two times. Don’t be surprised to find that it takes you twice as long to complete Part I (when you forced yourself to multitask) than Part II.

Myfitbrain brain games

Various studies involving brain scans found that every thought that passes through your mind affects your brain just like an action would. For example, when you practice a certain skill over a period of time, your brain will learn and thus you will master the skill. But a scientific study showed that mental practice alone can yield the same result. This sort of visualizations, thus stimulates the brain. Stimulation encourages neurogenesis. Scientists have always observed how people who think positively tend to live a healthier life – now they know why.

You don’t use, you lose. This is the first principle that governs the way your brain works. I mentioned previously how practice makes perfect. This is because as you practice, your brain grow new brain cells, called neurons, and creates synapses between those neurons.  Synapses allow the brain to work more efficiently by creating cause-and-effect relationships between neurons. Neurons that fire together, wire together through these synapses so that they’ll always fire together.

But these synapses break down if the neurons no longer fire together. Thus if you spend most of your time sitting down, or if you live an extremely sedentary life, it is inevitable for you to lose your ability to balance yourself on your legs as the synapses in you motor cortex breaks down.  This can be seen in people who were in a serious accident and had their legs in a cast for months on end. Though physiologically we should not have any problem walking, they often couldn’t because they need to relearn it.  Thus frequent exercise, something as simple as a slow walk, could prevent you from losing your independence later in old age. The same applies to your memory and your learning ability. If you don’t use it, you’ll lose it.

Neurogenesis require energy to be carried out. Most of the energy that you possess, you acquire from your diet. Thus by consuming a healthy diet is crucial to a health brain. Stimulation alone will not be sufficient if your brain do not have the building block for neurogenesis.

Generally speaking, any food beneficial for your body will be beneficial for your brain. The first change you should make to your diet is to consume more leafy green vegetables. This is because they contain large amount of anti-oxidants, which combat the process of oxidation. As you might have known, oxidation kills cells – including brain cells.

But there’s one particular vitamin that I want to single out here in this article. Vitamin B12, is crucial for normal cognitive function but unfortunately, it cannot be found in any plant source. Beef and eggs are excellent sources of B12 but if you’re a vegan, be sure to supplement your diet with this vitamin.  Extreme cases of B12 deficiency can cause psychosis and mania.

You can get most brain stimulation from your daily life. But if you want to reverse a particular condition – say memory loss or even Alzheimer’s – or if you want to improve a particular function of your brain, I would recommend that you perform specially designed brain exercises.   There are various brain exercises, ranging from those that stimulate auditory processing to those that stimulates visual processing. Because these exercises are specially designed, they are generally more effective at correcting a specific problem than general techniques that you can do yourself.

Brain exercises that targets the auditory processing, for example, increases your ability to make out sounds and thus allows you to remember verbal stimulus better (things that you hear). Those that targets visual processing, on the other hand, allows you react faster and remember visual stimulus better (such as the written word and facial recognition).

Thus it is a mistake to assume that brain exercises benefits only the older generation. Fact is, everyone could use a little brain exercises to improve mental functions.

Stanford University researchers recruited 19 undergrads who were heavy-duty multi-taskers — they were at the top of their class in their ability to simultaneously read, watch TV, listen to music, send and receive text messages, check their e-mail and surf the Web — and 22 others who rarely did two or three of those things at once. Volunteers in both groups submitted to a battery of tests.

It turns out the single-taskers do a better job of filtering out irrelevant stimuli compared with the multi-taskers.

To measure this, scientists asked the volunteers to gauge whether a red rectangle had changed its orientation on a computer screen without getting distracted by a bunch of blue rectangles. The more blue rectangles there were, the worse the multi-taskers did on the test. But the distracting rectangles had no effect on the single-taskers’ performance, the study found.

As further evidence that multi-taskers are more prone to distraction, a second test found that changing the color of letters that flashed on a computer screen caused them to take 77 milliseconds longer than single-taskers to decide whether they were looking at the letter “X.” (The multi-taskers were just as accurate, however.)

But you would think that someone with a lot of multi-tasking experience would have an edge when it came to toggling between two tasks. Not so.

Volunteers were shown a letter and a number together on a computer screen. They were asked to decide whether the letter was a consonant or a vowel or whether the number was even or odd. The researchers found that it took 167 milliseconds longer for the multi-taskers to switch between the letter and the number tasks than it did for the single-taskers.

Taken together, the results certainly imply that multi-taskers “approach fundamental information-processing activities differently than” single-taskers, the researchers conclude.

But why? Does a long history of multi-tasking make it difficult for people to focus? Or do they become multi-taskers because they are naturally attracted to a wide range of stimuli? That question remains unanswered.

The answer is important, especially for single-taskers. Though they performed better on the battery of tests, it’s clear these modern times favor those who can manage multiple forms of media at one time. If it’s hard for single-taskers to adapt, the researchers said, they may “be increasingly unable to cope with the changing media environment.”