Mendi does not measure brainwaves, since it isn’t based on EEG (electroencephalography).
EEG works by recording tiny electrical signals from neurons through electrodes placed on the scalp.
Instead, Mendi uses functional near-infrared spectroscopy (fNIRS); an optical imaging method that measures blood flow and oxygenation in the prefrontal cortex (PFC), the part of the brain linked to focus, decision-making, and emotional control.
Here’s how it works:
When you focus or perform a mental task, neurons in your prefrontal cortex become more active.
This activation increases oxygen demand, leading to higher blood flow in that region.
Mendi’s sensors use harmless near-infrared light to detect these subtle changes in oxygenated and deoxygenated hemoglobin beneath the surface of your skin.
These measurements serve as real-time feedback, allowing you to practice self-regulation. Over time, consistent training can strengthen your ability to focus, stay calm, and balance your emotional responses.
In short:
Mendi (fNIRS) measures blood flow and oxygenation; a window into how active your prefrontal cortex is.