Auditory cortex measurement with fNIRS
A little while ago we received an interesting request to measure both the temporal lobe and frontal lobe simultaneously in children with behavioral disabilities. The setup time needs to be reduced to an absolute minimum due to the behavioral nature of these children. To realize this, we came up with a combination of two of our devices, the Octamon and the Oxymon. With the Octamon the whole frontal lobe can be measured with virtually no setup time, while the Oxymon is capable of measuring in hairy areas like the temporal lobe.
As a prove of concept the auditory cortex was engaged using an auditory task. In this single participant pilot study, an activation of the auditory cortex located in the temporal lobe was observed while no major changes in oxygenation in the frontal lobe are visible. After approximately 5 seconds a clear hemodynamic response can be seen in the temporal lobe near the auditory cortex while the frontal lobe remains almost constant.
This is an example of two Artinis devices working together simultaneously, producing one single synchronized data file which can be assessed with our proprietary Oxysoft software. This can be done with any combination of Artinis devices, enabling e.g. combining simultaneous brain and muscle measurements using NIRS.
The data has been projected to the MNI-ICBM-152 (2009) template, the time range is sped up by a factor two, the position of transmitters and receivers are estimates and the color scale is optimized for contrast. This is a single participant pilot experiment, no conclusions should be drawn based on this data.
Imagine a person wearing a Brite and playing a demanding video game. This video game is difficult, and the mental workload is increasing drastically. Changes in blood volume, or hemodynamic changes, which are associated with the increase in workload is registered using the Brite. This blog will expand on how a NIRS-based BCI works and what researchers have made possible using NIRS-based BCI.
The third Artinis NIRS Symposium was a big success with valuable participants & fascinating NIRS discussions. Keep informed for ARTscientific 2019 impressions here and on our social media pages and see you at the next ARTscientific!
We like to incorporate the user from the very first beginning in our development process. Talking with researchers and clinicians, we get to know what’s driving them and what their expectations and suggestions are for our devices. We are constantly trying to understand their feelings and see the world from their perspective to optimize our NIRS devices. One way of doing this is observing and questioning the user that is working with the device, and subject that is wearing the NIRS device. This way, we are trying to gain new insights for existing and future NIRS products.
In this project we will focus on one of the most disabling symptoms of Parkinson’s disease, freezing of gait – episodic absence or reduction in the ability to produce an effective stepping in spite of the intention to walk (Nutt et al., 2011).
Short separation channels are the new trend in fNIRS. However, what is the functionality of such a short separation channel in brain oxygenation research?
A special thanks to our customers who published so many articles with our (f)NIRS devices and we hope you will keep on publishing in the future!
The Sophia Bus was an idea pitched by researchers from the Department of Child and Adolescent Psychiatry and Psychology within Erasmus MC-Sophia Children’s Hospital. As a national expertise center for many rare neurodevelopmental syndromes, children all over the Netherlands need to travel all the way to Rotterdam frequently to participate in research studies. The Sophia bus minimizes the burden for these patients by offering the solution to this problem: a mobile research lab that carries researchers to the patients’ doorstep.
fNIRS, as a neuroimaging method, was introduced more than two decades ago. Innovation in equipment, tools, and methods based on related-neuroimaging methods is increasing thanks to several companies and academic laboratories. The use of fNIRS in future research practices will aid in advancing modern investigations of human brain function. Connectivity measures will contribute to the field of neuroscience and a multimodal imaging approach is likely required.
Thanks to the very generous gifts of local companies and private individuals during the ‘Lichtjesactie’ (translates as ‘Candles project’) that was organized during Christmas time last year by the Stichting Vrienden van Sophia, the Sophia Childrens hospital were able to buy a camper van, which has been remodeled and transformed into a mobile research lab under close guidance of dr. Sabine Mous.
We offer the full spectrum of (f)NIRS devices, and all our devices can be mixed and matched to create your optimal setup within the same software. To aid you in finding the right device for your research we have drafted this comparative table below with the most important specifications for each device.