Our portable, user-friendly and comfortable fNIRS system
The Brite is a user-friendly, plug-and-play NIRS device with almost no set-up time. It works with multi-wavelengths LED’s, giving you continuous and real-time feedback in our data analysis software that is delivered with the system. It has a sample rate of 50+ Hertz.
- Truly portable and covering e.g. the prefrontal cortex, motor cortex or visual cortex.
- Measures oxy-, deoxy- and total hemoglobin concentration changes.
- Can be combined with other techniques such as EEG and tCDS.
- Integrated 9-axis orientation sensor.
- Easy analysis of your data with our superior analysis software; Oxysoft.
- Bluetooth connection or offline recording with a high sample rate.
- Compatible in parallel usage to achieve 54 channels.
With the Brite system, you can make different templates, for example, 23 channels to cover the frontal cortex, 2×12 channels on the motor cortex, or 27 channels on the visual cortex. Short distance reference channels are also possible.
The soft neoprene head-cap and the portability of the system make monitoring the brain oxygenation status of elderly, children and vulnerable patients especially comfortable and easy. Hyperscanning (monitor multiple subjects at the same time) can easily be done because our software makes it possible to combine different Brites, or even one of our other NIRS devices within one data stream.
Subjects are even able to perform physical activities like walking and running while the device is connected with a long-ranged antenna Bluetooth to the laptop. The Brite has an integrated 9-axis movement sensor. It perfectly complements with our other portable NIRS devices e.g. for measuring muscle oxygenation. This makes it the most suitable fNIRS device for athletes currently on the market.
Measures oxy-, deoxy- and total hemoglobin in a non-invasive and truly portable way
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.
- 8 high quality measurement channels
- Truly portable brain oxygenation monitoring
- Virtually no set-up time
- Non-invasively & Continuously
- In the lab and in the field
- Without the need for special infrastructure
- Without specially trained personnel
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!
OxyMon laser-based NIRS (9)
This is really dependent on the signal quality. Typically for normal cortical penetration you will want anywhere from 3cm up, the larger the distance the deeper the penetration however at the sake of a reduced signal-to-noise ratio. Typically for normal adults we employ a 3.5cm interoptode distance, for those with darker skin or dark/dense hair you may need to reduce this to achieve an ideal SNR. For younger children and infants often times 2.5cm is more common.
Lasers often require greater consideration in application. There are certainly constraints with regard to motility with a laser based setup that may not be of any concern with LED. Preparation times are often greater with laser than LED, as lasers are often added to a headcap one by one, whereas LED sources could sometimes be “pre-populated”.
Lasers naturally provide a very focal output and are excellent with narrow band frequency emission, thus the ability to discretely “tune” the light output is perhaps of some value, as you might imagine when studying the dispersion of light. Additionally modulation of lasers can take place many times fast than that of LED, as there are some capacitive “left-overs” with LED
fNIRS is of course a completely different modality than fMRI, however while the mechanics may differ there is overlap in the resulting measurements, ultimately cerebral blood flow and metabolic measurements may be obtained, and neuronal activation often assumed. fNIRS is specific to oxygenated and deoxygenated hemoglobin measurement and quantification due to light back reflection, while fMRI aligns the orientation of the hemoglobin depending on the presence of oxygen. fNIRS offers a much better temporal resolution often 100x or more, while spatially fMRI has the upper hand by roughly 10x.
Very good, and important, question. Clearly fNIRS is employing frequencies of light that are purposely used to traverse the skull without much restraint, and this is in fact introducing exogenous stimuli. Well don’t fret, the amount of signal power using fNIRS can be comparable to sunlight. Further, of recent, several studies suggest there are various health benefits to infrared light stimulation at the cellular/metabolic level- even still these studies primarily employ chronic use.
This is a tough one, inherently hair is the nemesis of any fNIRS device on the market and while we all would like to say we have this completely figured out it ultimately comes down to proper preparation, part of which is also a skill in performing. I would use the same criteria with regard screening as you may normally do with EEG.
OxySoft is developed for use with Windows 7 or 10, both are supported however Windows 7 is still preferred. We also offer a free Android application for the PortaLite and PortaMon units for streaming and data logging.
Depending on your interest, quite a bit. We are able to “tune” the frequencies of the lasers to different wavelengths, thereby offering the possibility to measure things such as Cytohrome C Oxidase (COX), and Indocyanine Green (ICG) tracer. Just let us know if you have anything particular in mind!
Yes, you may stream up to 7 devices, both wired (OxyMon), and wireless devices (Brite 23, PortaMon/PortaLite) to the same acquisition PC in real time.