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Don’t Drive Drunk: Studies show that only half of beer can interfere with hand-eye coordination, Science News

Don’t Drive Drunk: Studies show that only half of beer can interfere with hand-eye coordination, Science News

 


A new study found that skills strongly associated with driving ability could be “seriously” compromised by the equivalent of less than half of beer.

Scientists at NASA’s California-based Ames Research Center and San Jose State University have said that after consuming less than half the amount of one beer, hands and eyes in driving and other activities. Weighed about 75 kg, which warned that the coordination would be compromised.

The findings provide new information on the potential impact of even minimal alcohol consumption on high-risk human activities that rely on sensitive visual and visual motor control, such as driving, piloting, and working with heavy equipment. ..

In previous studies, eye movements and visual acuity were affected only by blood alcohol levels (BACs), which approached legal restrictions on driving.

A study by a research team based at NASA’s Ames Research Center in California found that hand-eye coordination was dramatically sensitive to alcohol, with some measurements of coordination impaired by more than 20% at BAC levels. I found out for the first time that it was done. 0.015 percent.

“Our findings provide a warning story that the subjective experience of drunkenness often does not match the objective impairment of sensorimotor coordination. In other words, most people have a disability after a drink. I don’t feel it, but to a large extent, “said Terence Tyson, the first author of a study of a paper published in The Journal of Physiology.

Tyson added that drinking a small amount of alcohol can affect driving, even if the driver feels good and is well within legal limits.

To reach this conclusion, researchers conducted volunteer eye movements, pupillary light reflexes, and BAC multiple times a day before and after volunteers drank alcohol while performing specially designed tasks. I measured it.

Volunteers were randomly assigned a mixed beverage containing a certain amount of alcohol and achieved either high (0.06%) or low (0.02%) peak BAC levels, so it was not possible to accurately determine a particular amount of alcohol consumption. did. Day.

Next, the researchers calculated 21 different eye measurements that have been shown to assess neural processing in specific brain regions that contribute to various components of eye movement and pupillary response.

Participants in the survey were mainly men and women in their twenties, who drank an average of 1-2 cups a week.

Researchers confirmed that participants slept all night the night before and asked them to refrain from both alcohol and caffeine for several nights in a row before the test.

Apart from this finding specific to alcohol-induced disorders, this study also showed how to use a specially designed collection of non-invasive eye measurements to measure mild defects in brain processing. ..

In future studies, researchers plan to investigate how their eye measurements are affected by other types of neurological conditions, such as those caused by degenerative diseases and toxic exposure. I am.

NASA is interested in developing sensitive yet non-invasive methods for detecting minor disorders.

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