Our most advanced and versatile fNIRS system. 

Artinis Oxymon.jpg


Measure oxy-, deoxy-, total hemoglobin concentration changes, and tissue saturation index (TSI) in both brain and muscle tissue.

  • Stable, versatile and highly sensitive

  • Possible to measure on both brain and muscle tissue

  • Numerous configurations, from 1 to 100+ channels

  • Short separation channel possibilities

  • Fast data collection at 50 Hz as standard - up to 250 Hz possible, for any amount of channels

  • No need to screen against ambient light

  • Unlimited data storage

  • The light detector cannot be damaged by ambient light

  • Raw data (optical densities) easily accessible

  • Up to 4 wavelengths per channel

fNIRS made easy


fNIRS system

The OxyMon is one of the most versatile and fastest NIRS systems on the market. The system monitors a subject’s local tissue oxygenation non-invasively by utilizing the technique of near-infrared spectroscopy. We offer a wide range of fibers, holders, and fit-for-purpose solutions to support you as best as possible and to adapt each system to your specific needs. We deliver a set-up enabling you to measure up to 100+ brain channels simultaneously with real-time visualization. Our systems have been used for over a decade in hundreds of publications


Near-infrared spectroscopy, (NIRS), the technique on which the OxyMon is based, relies mainly on two characteristics of human tissue. Firstly, the relative transparency of tissue for light in the NIR range, and secondly on the oxygenation dependent light absorbance of hemoglobin. To learn more about NIRS please visit the theory of NIRS page.

oxymon Specifications

The near infrared spectroscopy technique



The OxyMon has been used in almost all thinkable fields of research like study the aging brain, the brain at high altitude, functional connectivity, functional testing and for brain-computer interfacing (BCI). The system can be combined with other techniques such as EEG, TCD or MRI. We even offer fully integrated NIRS/EEG packages

Oxymon for muscle application

Real-time processing of fNIRS data in 3D


Up to a 112 channel fNIRS setup

We offer OxyMon systems from 1 channel up to 112 channels. The 112 channel setup includes a custom build cart and enables you to measure on four subjects simultaneously.  Our system is built up from cabinets. With one cabinet, you can make a maximum of 8 channels. By combining multiple cabinets, more channels can be made. The cabinets can be stacked and used as one big system, but every cabinet also works as an independent smaller system.


All of our devices are bundled with Oxysoft. Oxysoft is our dedicated software application used to collect, store, view, and analyze all necessary data from the OxyMon. This user-friendly software is developed by Artinis and highly customizable to individual requirements. Oxysoft provides in real-time the calculation of oxy-, deoxy-, total hemoglobin and TSI.


OxyMon fibers

Optical fiber fNIRS Oxymon.jpg

Optical fibers

The customization of the OxyMon does not stop at the number of channels or optode template. For creating your ideal OxyMon system we have a selection of fibers to choose from. Besides, we have redesigned our fibertips to make them lighter, sturdier, and more comfortable for the subject. This makes the OxyMon ideal for the measurement of infants, children, and vulnerable subjects. The tip is made out of plastic, this makes all our new fibers compatible with electromagnetic fields. We will always advise you which type of fibers to use depending on your application. We offer the following optical fibers:

  • Receivers/transmitters

  • 1- or 2-end fibers.

  • Straight- or 90°-end fibers

  • 3- or 10-meter fibers.

  • Metal or plastic fiber ends.

  • MRI compatible fibers

  • Extra small rodent fibers

  • Metal shield fibers

  • 8-channel reference fibers

  • Standard or customized fibers.

fNIRS headcap


Oxymon headcap

At Artinis we designed and developed our own head-cap. This head-cap shows major improvements over the other commonly used NIRS head-caps, such as EEG caps. In comparison to the standard caps, it covers the entire scalp and prefrontal cortex, provides equally divided pressure, freedom of head movement for the subject and absorbs external light due to its fabric.

All head-caps show printed optode marks and 10/20 system indications.
You are able to create your own custom optode template with the delivered tool. 

Sizes available: XXS, XS, S, M, L, XL.
Besides head-caps, we also offer holders for muscle measurements. 

OxyMon research package

Designed, produced and manufactured in The Netherlands, EU.

fNIRS package Artinis

What's in the box

  •  The OxyMon
  •  Laptop with pre-installed software
  •  Fibers of your choice
  •  Headcap or holders of your choice
  •  License key
  •  Oxysoft, data analysis software
  •  Stickers and bandages
  •  Dark cloth or bandana
  •  User Guide
  •  Support in setting up your research
  •  Pelicase

Extend your research:

  •  Full fNIRS set-up:
    The Oxymon cart
  •  3D Software
  •  NIRS research accessory or add-on devices