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Insomniacs’ brains differ, lose focus

Brain scans of people who say they have insomnia have shown differences in brain function compared with people who get a full night’s sleep.

Researchers at the University of California, San Diego, said the poor sleepers struggled to focus part of their brain in memory tests.

Other experts said that the brain’s wiring may actually be affecting perceptions of sleep quality.

People with insomnia struggle to sleep at night, but it also has consequences during the day such as delayed reaction times and memory.

Too many people may be damaging their health by self-medicating with sleeping pills, according to the Royal Pharmaceutical Society.

It said half of people with insomnia diagnosed themselves and took the medication without seeking medical advice. It’s never a good idea to take any medicine long-term as a result of self-diagnosis, as you can end up treating a symptom rather than addressing the root cause of your problem.

However, the society said insomnia was often part of other physical or mental health problems which needed treating. Lack of sleep needs to be treated as a major health issue, according to a report published by the Mental Health Foundation.

The impact of insomnia is beyond health  and safety. Research showed people with insomnia were four times as likely to have relationship problems, three times as likely to feel depressed and three times as likely to suffer from a lack of concentration.

The report, Sleep Matters, suggests a link between insomnia and poor relationships, low energy levels and an inability to concentrate.

The study compared 25 people who said they had insomnia with 25 who described themselves as good sleepers. MRI brain scans were carried out while they performed increasingly challenging memory tests.

One of the researchers, Prof Sean Drummond, said: “We found that insomnia subjects did not properly turn on brain regions critical to a working memory task and did not turn off ‘mind-wandering’ brain regions irrelevant to the task.

“This data helps us understand that people with insomnia not only have trouble sleeping at night, but their brains are not functioning as efficiently during the day.”

A sleep researcher the UK, Dr Neil Stanley, said that the quality of the sleep each group was having was very similar, even though one set was reporting insomnia.

He said: “What’sthe chicken and what’s the egg? Is the brain different and causing them to report worse sleep?

“Maybe they’re perceiving what happened in the night differently; maybe what is affecting their working memory and ability to focus on the task at hand is also causing insomnia.”