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A 6th Mind collection

40 Hz Focus

Three Mental 6-packs built around 40 Hz gamma: bright sessions that lift you into focus, and two guided programmes that train calm, steady attention.

3 packs · 18 sessions · 12 guided

All 3 packs install to your free 6th Mind account in one go. Premium also unlocks every other paid pack. Cancel anytime in the app.

What's inside

3 packs, 18 sessions

Lucid hours

Six bright, ascending sessions that lift a scattered mind into sharp gamma-state focus.

  1. 1 Clear sky
  2. 2 Lucid keys
  3. 3 Crystal calm
  4. 4 Radiant mind
  5. 5 Kinetic pulse
  6. 6 Bright current
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Morning lake

Guided

Six guided sessions that follow the fog lifting from a lake, from dark morning to a clear noon.

  1. 1 Before dawn
  2. 2 First light
  3. 3 Still water
  4. 4 Morning wind
  5. 5 The far shore
  6. 6 Clear noon
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Steady attention

Guided

Six guided sessions that train calm, steady attention, one step at a time.

  1. 1 Finding the pulse
  2. 2 Steady contact
  3. 3 Breath and pulse
  4. 4 Open field
  5. 5 One clear aim
  6. 6 On your own
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The science, briefly

Why 40 Hz

Gamma is the fastest of the common brainwave bands, and 40 Hz sits in the middle of it. Gamma activity rises during focused attention, active recall and the kind of joined-up thinking where different parts of the brain work in sync.

When the brain receives a steady rhythm, such as a pulsing tone or a flickering light, its activity tends to fall into step with it. This frequency-following response has been measured with EEG since 1965: a clean 40 Hz signal brings more 40 Hz gamma in return.

Much of the modern interest comes from MIT, where 40 Hz light and sound raised gamma activity. Human studies are still early, so treat 40 Hz as a promising practice for focus and clarity, not a treatment. 6th Mind is a wellbeing tool, not a medical device.

How it works

  1. 01

    Get Premium

    One subscription: $5.99 a month, or $39.99 a year (like $3.33 a month).

  2. 02

    Install all 3 packs in one tap

    They go to your free 6th Mind account. Coming back from checkout, they install on their own.

  3. 03

    Play them in the app

    With light synchronised to the sound, through the camera flash or headset mode. Or audio only, here in your browser.

6th Mind Premium

40 Hz Focus, and every other paid pack

  • ✓ All 3 packs of 40 Hz Focus, installed in one go
  • ✓ Every other paid Mental 6-pack, including new ones as they come out
  • ✓ More room in the Session creator: unlimited saved sessions, thirty renders a month
  • ✓ Cancel anytime in the app

$39.99/year

or $5.99/month

All 3 packs install to your free 6th Mind account in one go. Premium also unlocks every other paid pack. Cancel anytime in the app.

Questions

What's in 40 Hz Focus?
3 Mental 6-packs, 18 sessions in all: Lucid hours, Morning lake and Steady attention. Morning lake and Steady attention are guided programmes.
Do I need Premium?
Premium is the simplest way: one subscription installs all the packs at once and also unlocks every other paid pack. Each pack is also sold on its own in the Session library, if you'd rather buy one and keep it.
Do I need the app?
Installed packs play here in your browser as audio. The full experience, with light synchronised to the sound, is in the free 6th Mind app for iPhone and Android.
Do I need headphones?
No. Headphones add binaural beats; without them, isochronic tones carry the same rhythm through any speaker, and the light works either way.
Is the 40 Hz light safe?
For most people, yes. The exception is photosensitive epilepsy: if you have a history of seizures, switch the light off and use sound only. Keep the brightness comfortable.
Can I cancel Premium?
Yes, anytime in the 6th Mind app (My Profile). Your access lasts until the end of the period you've paid for. Premium is $5.99 a month or $39.99 a year.