Phase 2 study now open · Lisbon

Is mental fatigue affecting your best work?

You can still work, lead and make decisions while mental fatigue is building. Gamma is testing whether the wearable you already own can reveal those changes early enough to do something about them.

Join the waitlist See how it works

No new device. No daily EEG. No new habit.

Apple Watch · October 2026

Apple Watch

Recover

Morning Recovery

7:42 AM

Gamma

64Below your normal range

Normal range 78–86

MonTueWed ThuFriSatToday

Brain

Theta

vs baseline

+14%

Yesterday +21%

Alpha

vs baseline

+7%

Yesterday +12%

Improving, but not back to your normal brain pattern yet.

Body

HRV

48ms

Sleep

7h 42m

Resting HR

63bpm

Behavior

Reaction time

472ms

Attention consistency

−6%

Your body is recovering faster than your brain.

Detect

Today

2:14 PM

Gamma

Your pattern is shifting earlier than usual.

Mental fatigue may be building sooner than your normal pattern today.

Brain

Theta activity

vs morning baseline

+16%

Alpha activity

vs morning baseline

+9%

Your brain activity is moving further from your rested baseline.

Body

HRV

Personal range 49–55 ms

48ms

Resting HR

Personal range 59–63 bpm

63bpm

Behavior

Reaction time

Personal range 431–449 ms

472ms

Attention consistency

vs normal

−6%

Your brain is showing a larger shift than your body right now.

You can still be functioning while the pattern is changing.

Day 1

A demanding day

Long hours, hard calls, no obvious problem. Nothing about the day feels like a warning.

Day 2

Not quite back

You slept, you showed up, you did the work. The pattern moves back toward where it started, but not all the way.

Day 3

Another demanding day

You are still functioning. The distance from your own normal keeps opening up.

Your own normal pattern Day 1

What if you could see that before you felt depleted?

Mental fatigue does not always arrive as a dramatic crash. You can still be working, deciding and getting things done while demanding days begin to stack up.

Gamma is investigating whether changes in everyday wearable signals can help reveal that pattern.

How Gamma thinks about the problem

Detect.
Recover.
Act.

Three questions, in order. Each one only makes sense once the one before it has an answer.

Detect

What is changing?

Compare today's wearable signals with your own normal pattern and notice when something begins to shift.

Recover

Am I bouncing back?

Look at whether your signals are returning toward your normal pattern or whether demanding days may be stacking up.

Act

What should I do with that?

Turn the pattern into practical guidance for how you pace demanding work and recovery.

PushRecoverMove

Know when to push.
Know when to recover.

This is the framework Gamma is being built around. It is not a claim that Gamma already knows the right answer for you.

The research

Can your wearable tell us something your body alone can't?

Brain

EEG recorded during each research session.

Body

Wearable physiology, including heart rate and HRV.

Behavior

Attention · reaction time · working memory.

Do they change together?

That's what we're testing.

Every Gamma research session pairs wearable data with EEG and behavioural cognitive measures.

We're studying whether changes observed across brain activity, physiology and performance can reveal meaningful patterns associated with mental fatigue and recovery.

Live study progress

402Sessions

30.1MEEG data points

13Participants

We're testing the question before claiming the answer.

Phase 2 is underway in Lisbon. The study is designed to test whether wearable signals, EEG and cognitive performance tell a consistent enough story to support useful mental fatigue and recovery insights.

Explore the study

Taking part: Lisbon · 14 days · 3 sessions per day · Earn up to €126. 17 of 30 spots left.

Apply for the study

The hardest days aren't always the ones where you stop.

Sometimes you keep going.

You keep working.
You keep making decisions.
You keep pushing through.

The question is whether you would make the same choices if you could see that your pattern was changing.