fNIRS made easy


The OctaMon (optimized for prefrontal measurements) and the OctaMon+ (applicable anywhere on the head) are ideal for capturing brain activity while having the freedom to perform daily activities including exercise. Like the PortaLite, the OctaMon measures changes in oxygenation in terms of oxyhemoglobin, deoxyhemoglobin, and total hemoglobin. This device can be applied in a variety of dynamic settings as often required in neuroscience and sports science research.

With the OctaMon, we focussed on the usability and portability of NIRS while still providing the same quality of data as measured by large NIRS systems. The OctaMon is a very lightweight and plug and play device with close to no set-up time. It works with multichannel LED’s, giving you continuous and real-time feedback in our data analysis software that is delivered with the system.


The OctaMon research package makes monitoring oxygenation easy and accessible. Hyperscanning (monitoring multiple subjects at the same time) is also possible with the OctaMon, while our software provides you to combine different NIRS devices within one data stream. The subjects are able to perform physical activities like walking or running, while the device is connected to Bluetooth (up to 100 meters range) to the laptop.

The OctaMon is ideally suited to investigate cognitive functions, especially during dual tasking (for example combined with driving or walking). The prefrontal brain regions are in particular studied in working memory or attention tasks, but is also of particular interest for studying neuropathological disorders such as Alzheimer’s disease or ADHD. This is because of its strong interconnection with deeper brain regions, such as the basal ganglia. The headband covers a large area of the brain so it could also be used for detecting epileptic seizures. The OctaMon has a very comfortable headband and flat optodes to maximize comfort.

For all other measurements, we have the OctaMon+ that has been optimized to measure through hair. It has a head cap covering the complete brain so give you maximum freedom on where you want to place the optodes. This is commonly the visual, motor or parietal cortex. But of course, it does not need to be limited to this!

All publications with the OctaMon and OctaMon+ can be found on our publications page.


The near infrared spectroscopy technique


Optical oximetry and near-infrared spectroscopy (NIRS) in particular is a tool for assessing the oxygenation status and hemodynamics of various organs, e.g. muscle and brain non-invasively. It 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. Read more >


  • Virtually no set-up time
  • 8 high-quality measurement channels
  • Light emitting diodes: 8×2 wavelengths
  • Wavelengths standard nominal 760 and 850 nm
  • Photodiode with integrated ambient light protection
  • Bluetooth connection (up to 100 meters) for online measurements
  • 50 Hz sampling rate
  • Up to 6 hours with one interchangeable and rechargeable battery
  • Brain oxygenation monitoring, cerebral studies
  • Custom solutions for short channels are available


The mini variant of OctaMon which is optimized for pediatric research.

Real-Time Processing of fNIRS Data in 3D



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.

OctaMon research package

Designed, produced and manufactured in The Netherlands, EU.

fNIRS package


  • OctaMon / OctaMon+ / OctaMon mini / OctaMon M
  • Laptop with pre-installed software
  • Strong and sturdy Pelicase
  • License key
  • Bluetooth dongel
  • OxySoft, data analysis software
  • Batteries and charger
  • Head band / head cap
  • User Guide
  • Support in setting up your research


Octamon Leaflet


For publications with the OctaMon

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