Brain Focus Games

Dual N-Back

MemoryBrowser game· 5 minHow to play

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This dual n-back session tracks two streams at once: grid position and letter/sound. Press Position (A) or Sound (L) only when the current stimulus matches the one from N trials ago. After the block you get separate accuracy scores and an adaptive next N.

How to play

  1. 1Choose a starting N level (1–4). Beginners should start at 1 or 2.
  2. 2Each trial flashes a grid position and shows/speaks a letter.
  3. 3Press Position (A) if the place matches N steps back; press Sound (L) if the letter matches.
  4. 4Finish 20 trials, then review position accuracy, sound accuracy, and the suggested next N.

Tips

  • • Aim for roughly 60–80% accuracy — that range usually means N is well matched.
  • • Do not spam buttons; false alarms lower your score.
  • • Use Voice if your browser supports speech synthesis, or follow the on-screen letter.

FAQ

What makes this a dual n-back?

You monitor two independent streams — position and letter/sound — and decide for each whether it matches N steps earlier.

How does adaptive difficulty work?

If combined accuracy is high, suggested N goes up. If accuracy is low, suggested N goes down. You can still retry the same level.

How often should I practice?

Short sessions a few times each week are enough to learn the task. It is training practice, not a medical treatment.

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