The Brain
The forehead is not merely convenient. It provides practical access to frontal EEG sites (Fp1, Fp2, Fpz) overlying the prefrontal cortex — the seat of attention, working memory, decision-making, and emotional regulation — while avoiding hair interference and remaining socially acceptable to wear.
Why the forehead?
The forehead is hair-free, easy to reach, comfortable to wear, and sits right over the part of the brain that controls focus.
The prefrontal cortex and executive function
The front of your brain handles focus, decisions, impulse control, and emotional regulation. HALO listens here.
Brainwaves carry meaning
Different rhythms relate to different states: alpha with calm, beta with active thinking, theta with deep focus or drowsiness.
Networks, not single spots
Your brain switches between focused, resting, and alerting networks. HALO tracks the balance between them.
Bio-harmonic regulation
HALO looks for balance across body and mind together — calm heart, steady breath, regulated brain.
Knowing the brain is one thing — can we build a device worthy of it?
The forehead optimally balances signal quality, executive proximity, comfort, and manufacturability.
Frontal EEG accesses DLPFC, OFC, and ACC — the executive core.
Cognitive state is a multi-band, multi-network, multi-system phenomenon.