Kernel Flow

Kernel, founded in 2016 by Bryan Johnson, is a private neurotech company based in Los Angeles pioneering accessible, high-resolution brain measurement. Its core product, Kernel Flow, is a wearable, time-domain fNIRS system engineered to provide lab-grade data with the portability needed for real-world clinical and research applications. The company is building a commercial business through direct-to-consumer wellness scans at partner clinics while simultaneously advancing a pipeline of potential medical markers for conditions like depression and cognitive impairment. With over $50M invested and a growing database of scans, Kernel is positioning itself at the intersection of digital health, neuroscience, and AI.

Kernel Flow: A wearable, time-domain functional near-infrared spectroscopy (TD-fNIRS) system with 3,500 measurement channels for whole-head coverage. It combines the portability of wearables with lab-grade precision, using time-domain photon tracking for high spatial resolution and absolute measurements. The platform includes motion tolerance, quick setup, automated quality control, and cloud connectivity for longitudinal data analysis.

Kernel competes in the broad neurotechnology space. In wellness, it faces competition from consumer EEG headsets (e.g., Muse) and digital cognitive assessment apps. In the clinical/research domain, competitors include other fNIRS companies (e.g., NIRx, Artinis), established modalities like fMRI and EEG, and a growing number of startups developing novel brain sensing technologies. Kernel's differentiation lies in its claimed superior data quality (time-domain fNIRS) at a scalable, wearable form factor.