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NeuroNight SF · Brain games

Can you trust your brain?

The five games from NeuroNight SF, each showing a real principle of how your brain works. Take a guess, then reveal the answer. Better yet, try them on a friend.

Game 1 of 5

👁️ Fool your brain

Five cards from the night. Look closely, make your guess, then reveal.

Card 1 of 5

Which teal line is longer, A or B?

Which teal line is longer, A or B?
Card 2 of 5

Which pink circle is bigger, A or B?

Which pink circle is bigger, A or B?
Card 3 of 5

Are the grey lines slanted?

Are the grey lines slanted?
Card 4 of 5

Do you see a white triangle?

Do you see a white triangle?
Card 5 of 5

Stroop challenge: say the INK color out loud, not the word.

Stroop challenge: say the INK color out loud, not the word.
Games 2–5

More ways your brain surprises you

Most of these you can try at home with a friend.

Game 2 of 5

🖐️ Lend me a Hand

Hide your real hand, put a rubber hand in view, and have a friend stroke both at exactly the same time.

Game 3 of 5

📏 How fast is your brain?

A friend drops a ruler between your fingers without warning. Catch it, then read your reaction time off the chart. Then try it again while multitasking.

Game 4 of 5

🙃 Upside-down World

The prism goggles we had at NeuroNight SF flipped everything upside down! Trying to shake hands, catch, or even point at something was a major challenge. Want to try it at home? You can buy upside-down goggles on Amazon.

Game 5 of 5

🍬 Taste with your Nose

Hold your nose, eat a jelly bean, then let go.