The science behind Mendi
Mendi's neurofeedback technology is built on decades of peer-reviewed fNIRS research.
Trusted by Leading Institutions
What is fNIRS?
fNIRS stands for functional Near-Infrared Spectroscopy, a non-invasive brain imaging technology that measures brain activity by detecting changes in blood oxygenation. Mendi uses fNIRS to measure blood oxygenation in your prefrontal cortex: the part of your brain that controls focus.
How fNIRS measures prefrontal cortex activity
Light Emission
Mendi emits safe near-infrared light at dual wavelengths: 660nm and 805nm that passes safely through the forehead, reaching prefrontal cortex tissue below the skull without radiation or electrodes.
Absorption & Scattering
As light passes through brain tissue, the amount absorbed differs between oxygenated and deoxygenated blood. Active brain regions draw more oxygenated blood, revealing changes in prefrontal cortex activation.
Signal Processing
Mendi's processor converts raw light data into a live hemodynamic signal. That signal feeds directly into the training game, translating prefrontal hemodynamic changes into a live feedback signal.
Light Emission
Mendi emits safe near-infrared light at dual wavelengths: 660nm and 805nm that passes safely through the forehead, reaching prefrontal cortex tissue below the skull without radiation or electrodes.
Absorption & Scattering
As light passes through brain tissue, the amount absorbed differs between oxygenated and deoxygenated blood. Active brain regions draw more oxygenated blood, revealing changes in prefrontal cortex activation.
Signal Processing
Mendi's processor converts raw light data into a live hemodynamic signal. That signal feeds directly into the training game, translating prefrontal hemodynamic changes into a live feedback signal.
What users experience after 8 weeks
Improvement in sustained focus
42%
Reduction in perceived stress
31%
Improved mood and emotional balance
16%
Better general wellbeing
51%
Results are based on aggregated in-app data and self-reported outcomes from thousands of users who completed eight weeks of Mendi neurofeedback training. Improvements were measured using validated scales (ACS, WHO-5, PSS-10, GAD-7, PHQ-9). Individual results may vary.
Lab-grade brain measurement, built for daily use.
Lightweight design
Built for short and long sessions. Low-profile, ergonomic, and comfortable on the forehead.
CE & FCC Certified
Mendi is safe for regular use, and meets the electromagnetic interference standards.
fNIRS
Research-validated measurement, built for daily use.
Automatic body detection
Signal validated against research-grade fNIRS in peer-reviewed studies
Why portable fNIRS matters
Traditional fNIRS systems cost tens of thousands of dollars and require lab environments. Mendi brings the same measurement technology to a device you wear at home.
Lab only
Traditional fNIRS
$30,000–$100,000+ per system
Requires trained specialist to operate
Bulky cap, lab environment only
Daily use
Mendi
Consumer-accessible price point, no subscription
Automatic setup: detects skin contact, starts recording
Lightweight, wearable for daily sessions
Field-ready
Research applications
Mental workload assessment outside the lab
Longitudinal sustained attention studies
Prefrontal cortex cognitive performance tracking
The complete toolkit for fNIRS research: Record. Visualize. Export.
Mobile App
Get access to Mendi Neurosight for your research
Available to universities, clinical labs, and research institutions. We support co-research, data-sharing, and custom integrations.
Research Partnerships
Co-research agreements, joint publications, and data-sharing protocols for academic and clinical programs.
Neurosight Platform Access
Structured field data collection, multi-participant management, and IRB-compatible governance.
Technical & Integration Support
API docs, SDK access, and direct engineering support for custom integrations and signal processing pipelines.
Ready for calmer, more focused days?
- Improve focus & attention
- Measurable progress tracking
- No subscription fees
