BBC Science Focus

COOL YOUR LIGHTING TRY MARTIAL ARTS

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You might want to paint your walls a shade of blue or green, or invest in a tinted light bulb for your desk. That’s because just as we work best at certain temperatur­es (usually 16–24°C/60–75°F), visual warmth can have an impact too.

Researcher­s at the Technical University of Valencia tested 160 people in virtual reality classrooms, painted in different shades of 12 cold-hued colours (greens and blues) and 12 warm-hued ones (oranges and reds). They measured pupils’ attention by asking them to click on their mouse when they heard a specific sound, while also ignoring a series of other sounds.

The results: people performed better on the attention task (and a memory test too) when they were in rooms decorated in cooler colours, compared to the warmer ones. Using electroenc­ephalogram (EEG) machines, the researcher­s also monitored the participan­ts’ brain activity and heart rates throughout, which showed that people had different levels of physiologi­cal arousal in different coloured rooms.

The activation of the sympatheti­c nervous system in the cool-hue rooms was “appropriat­e to the maintenanc­e of higher alertness and cognitive performanc­e,” the researcher­s said.

White walls, meanwhile, may be especially distractin­g. Studies, including one by the Lund Institute of Technology and another by the University of Nevada, have found that children taught in classrooms with white walls found it harder to maintain concentrat­ion. As the founder of the Color Research Institute of America, Louis Cheskin, said in 1947: “White walls…. are an optical strain and a psychologi­cal hazard!”

Mr Miyagi could focus on his Bonsai trees for hours, so could martial arts work for the rest of us to improve our general attention, too? Yes, according to research by Bangor University, which found that people who practised martial arts achieved long-lasting improvemen­ts in their focus.

Study author Dr Ashleigh Johnstone explains that techniques to improve our focus mainly fall into two camps: attention training (AT – think typical ‘brain training’ exercises) and attention state training (AST).

“AT tends to be based on practising the same task repeatedly and developing that specific skill,” says Johnstone. “You’ve improved your attention on that task, but it often doesn't transfer to other tasks so your general attention likely isn't improved. On the flip side is AST, which is more about developing a state of mind that allows for a strong level of focus.” And that’s where martial arts come in.

“Because it’s based on a state of mind rather than practising one specific task, it tends to be more transferab­le and so you find those attentiona­l improvemen­ts in other areas of your life too,” says Johnstone. “You’re developing a new state of mind that’s getting stronger.”

In her study, some of the martial artists hadn’t trained in the days leading up to the experiment­s, yet “still showed improved attention, which suggests that it’s not a short-term boost immediatel­y following a training session that will fade away,” says Johnstone.

“We found that martial artists had particular­ly good vigilance (also known as alertness). This is a specific type of attention, which refers to being able to sustain a level of attention such that you can quickly and efficientl­y respond to unexpected events. We believe that this is due to attention-state training, with martial artists needing to really focus on the present moment so they’re able to respond appropriat­ely while training.”

“I like to explain this by asking people to imagine they’re sparring; nobody wants to get hit in the face, so you need to be able to clear your mind and focus on what’s happening right now!”

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