Scientists have identified why people blink far more frequently than necessary

By studying this process, scientists at the University of Rochester (USA) came to the conclusion that people blink much more often than necessary, because in addition to the above-mentioned functions, blinking is also actively involved in the processing of visual information.

It was found that the average frequency of human blinks is 20 times per minute or about 20000 per day. Each eyelid movement lasts from 0.1 to 0.4 seconds. As a result, it consumes 8 per cent of waking time. To adapt to this constant ‘change of scenery’ when processing visual information, our brains have to work harder.