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The library

Learn how focus works.

Guides14
Sections5
States coveredAll five
DateJuly 2026
01

Start here

What Zone is, how in-ear EEG works, and the model behind everything else.

OverviewWhat is Zone?Neurofeedback earbuds, explained from zero.GuideThe scienceHow Zone understands your brain.From electrical signal to focus state, step by step.GuideThe modelThe five states of focus.In Flow to Depleted: the framework in one page.GuideThe categoryEEG earbuds, explained.What in-ear EEG is and why the ear works.Guide
02

The five states

One deep dive per state: what it feels like, what the signals show, and what to do next.

New · State 02What locked in actually means.The slang, decoded, then made literal.8 minNew · State 03Cognitive overload, explained.Running Hot is the warning. Here is how to catch it early.9 minNew · State 04Where your mind goes when it wanders.Drifting is a signal, not a character flaw.9 minNew · State 05The afternoon slump, measured.Why your brain fades after 3PM, and what Depleted really means.7 min
03

The signals

The measurements underneath the states, and what measuring attention honestly looks like.

New · Brain EnergyMental energy is a budget.The battery model: fills overnight, drains with effort, recovers on breaks.7 minNew · The bandsAlpha brain waves, without the myths.What alpha actually signals, and why one-band stories oversimplify.9 minNew · MeasurementThe attention span test, honestly.What online tests measure, what they miss, and what continuous measurement adds.5 min
04

Focus, practiced

The habits that protect attention, grounded in what the signals show.

New · AttentionContext switching is expensive.Attention residue, the cost of task jumps, and when switching is right.9 minNew · RecoveryBrain breaks that actually work.Break by signal, not by schedule: the five-state break map.6 min
05

The evidence

An honest look at whether neurofeedback actually works.

EvidenceDoes neurofeedback work?What the evidence says, without the hype.Guide

Read your own focus.

Zone turns everything in this library into a live reading, from inside your ears.

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