Publication overview 2018

Publication overview 2018

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!

NIRS and connectivity measures: an Interview with Prof. Stephane Perrey

NIRS and connectivity measures: an Interview with Prof. Stephane Perrey

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.

NIRS device specification overview

NIRS device specification overview

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.

Combining the world of NIRS and EEG

Combining the world of NIRS and EEG

EEG and fNIRS are complementary measuring techniques. EEG measures electrophysiological brain activation, that is the electromagnetic field created when neurons in the brain are firing. fNIRS measures the hemodynamic response, that is the change of oxygen in the blood when a brain region becomes active. By combining EEG and fNIRS, a more complete picture of brain activity is obtained: activation of neurons and energy demand of neurons. 

The do's and don'ts of baselines

The do's and don'ts of baselines

A common question we get from our customers is what is a baseline and how to use it. Generally with fNIRS, the absolute values are arbitrary. The period before a stimulus is often referred to as the baseline. In this blog we will describe the do's and don'ts of baselines.

Publication overview 2016

Publication overview 2016

At Artinis we consider ultimate success to be good publications by our customers. To see how we are doing we have systematically searched Google Scholar for NIRS and fNIRS publications.

Finding Prana: An Artist’s Experiment with fNIRS

At Artinis we are regularly surprised with the novel and innovative applications of our fNIRS devices. In this blog we would like to share an example of an unique application by one of our customers.

Helen Collard is an interdisciplinary artist working with yogic pranayama (breathing exercises) and technology. Her most recent project has been working with fNIRS to record the changing levels of oxygenated and deoxygenated hemoglobin whilst performing a sequence of pranayama exercises. In these exercises the breathing is controlled, whilst  the hemodynamic response is sonified in real-time allowing the audience to experience the effects of the pranayama performance on changing hemoglobin levels in an audio form.

Helen has been working in collaboration with by Dr. Philippa Jackson at the Brain Performance and Nutritional Research Center based at Northumbria University, Newcastle, UK. Helen and Philippa used a 2-channel continuous-wave Oxymon system and ran two initial pilot studies to see if the pranayama exercises had significant results to justify creating a sonification system. Once it was established there were clear hemodynamic patterns for each pranayama exercise  Helen began work on making a system to sonify the data in real-time. The system was created by sharing Oxysoft data with programming language Max. The audio is composed to illustrate a sound experience or translation of the body and mind during the pranayama sequence in the audience.

The work is entitled Finding Prana. The title refers to the yoga concept of prana which is a Sanskrit word taken to mean both breath and life and pranayama is the control or regulation of the prana or breath. Finding Prana was most recently performed at the international electronic arts festival ISEA 2017 – the International Symposium of Electronic Arts. Artinis provided a portable Octamon for Helen to make the trip to Colombia and perform at the Manizales Botanical Gardens Auditorium. This year’s symposium and festival attracted an international roster of artists and academics working with technology under the theme of Bio-creation and peace.

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For further information please visit:

Finding Prana: https://helencollardo.com/2016/12/1/fnirs-sonification

ISEA: http://www.isea2017.disenovisual.com/

 

 

Image: Finding Prana ISEA 2017 Photo Credit: Juan Waltero

 
 

3D Digitization and Co-Registration to the MNI brain template using OxySoft

3D Digitization and Co-Registration to the MNI brain template using OxySoft

How do we know that the most active channels are located over the brain region of interest and not somewhere else? Of course, an experienced researcher just knows where to place the optodes, but is that enough to convince a potential highly-critical reviewer or fellow scientist?

2fNIRS workshop: Hyperscanning with the OctaMon

2fNIRS workshop: Hyperscanning with the OctaMon

Last week Artinis was present at the 2016 2f-NIRS conference in Montpellier, France. This two-day conference, titled NIRS signal: from acquisition to analysis, provided us with a great platform to give a mirror game workshop with two OctaMon devices.