In the Blink of an Eye Passage

Front

What is the primary reason people are not bothered by brief interruptions in vision caused by blinking?

Back

The brain is designed to ignore very brief moments of darkness.

Front

How does concentration affect blink rates?

Back

You'll blink less when you're concentrating on something.

Front

What can be concluded about the muscles used for eye movement compared to blinking?

Back

More muscles are used to move the eye than to blink.

Front

What does the section 'Think Before You Blink' discuss?

Back

The various factors associated with blinking rates.

Front

What is a characteristic of blinking that makes it similar to a heartbeat?

Back

Blinking usually occurs automatically.

Front

What happens to your eyes if you don't blink enough?

Back

Without blinking, your eyeballs begin to dry, and your eyelids feel sticky.

Front

How long does each blink last?

Back

Each time you blink, your eye closes for about three-tenths of a second.

Front

What is one benefit of blinking for the eyes?

Back

Blinking provides lubrication to the eyeball.

Front

What happens to blink rates as people age?

Back

Blink rates decrease as people move into older adulthood.

Front

Why might staring at a computer screen reduce blink rates?

Back

People tend to concentrate more when staring at a screen, leading to less blinking.