Notice:
We offer a fully integrated fNIRS EEG package.
- Simultaneously measures electrical changes in brain tissue and changes in brain tissue oxygenation and blood volume;
- Combined EEG/NIRS head cap and optode holders;
- Up to 112-channel FNIRS and 128-channel EEG for full head coverage;
- No interference with the EEG signal;
- Measure EEG and NIRS at the same spot;
- Available mobile settings;
- Combine OxyMon, PortaLite, OctaMon or Brite with an EEG system;
- Superior quality of EEG and NIRS data;
The Benefits
EEG and fNIRS are complementary measurement techniques. The EEG measures the electrophysiological activation of the brain, that is, the electromagnetic field created when the brain's neurons are firing. With fNIRS, you measure the hemodynamic response, so the adjustment of oxygen in the blood when a region of the brain is active. By combining EEG and fNIRS, you therefore get a complete picture of brain activity: neuron activation and neuron energy demand. In addition, they also have complementary spatial and temporal resolution. While EEG is a spatially inaccurate recording technique due to volume conduction, meaning that even activation several centimeters away is recorded by electrodes, NIRS measures very accurately just below the location of the sensors.
Despite spatial inaccuracy, EEG is a very useful technique as it records a very high sampling rate of up to several tens of Kilohertz. Most of the information is contained in the frequency band between 2 Hz and 100 Hz, therefore within 10 ms. The hemodynamic response is a slower response, taking a few seconds to start and then fading over several seconds. The combination of EEG and NIRS therefore makes it possible to observe the brain being active in all its facets, simultaneously in different regimes and on different timescales.
Oxysoft
Oxysoft is able to analyze your data or export it to a wide variety of toolboxes (eg HOMER2, NIRS-SPM). We can even provide settings for moving NIRS-EEG, opening up the possibility to measure NIRS-EEG while the subject is moving freely. Our unique optode and electrode holders can measure both NIRS and EEG in the same location.
The NIRS-EEG packages were developed in close cooperation with TMSi. Get in touch so we can provide you with an ideal system for your experiments.
References
Muthalib M, Anwar AR, Perrey S, Dat M, Galka A, Wolff S, Heute U, Deuschl G, Raethjen J, Muthuraman M. Integração multimodal de fNIRS, fMRI e neuroimagem EEG. Clin Neurophysiol. 3 de maio de 2013. pii: S1388-2457 (13) 00260-5.
Anwar AR, Muthalib M, Perrey S, Galka A, Granert O, Wolff S, Heute U, DeuschlG, Raethjen J, Muthuraman M. Conectividade efetiva de redes sensório-motoras corticais durante tarefas de movimento do dedo: Um simultâneo fNIRS, fMRI, estudo EEG (2016 , 29 (5): 645-660), doi: 10.1007 / S10548-016-0507-1).
Abeln V, Schneider S, Knicker A, Schiffer T, Hollmann W, Strüder HK. Alterações eletrocorticais e hemodinâmicas no cérebro durante o exercício incremental de bicicleta em normoxia e hipóxia – um estudo combinado de EEG / NIRS. Journal of Sports Science 3 (2015) 105-116
Blokland Y, Spyrou L, Thijssen D, Eijsvogels T, Colier W, Floor-Westerdijk M, Vlek R, Bruhn J, Farquhar J. Decodificação EEG-fNIRS combinada de tentativa motora e imagens para controle de troca cerebral: um estudo offline em pacientes com tetraplegia. DOI 10.1109 / TNSRE.2013.2292995, IEEE Transactions on Neural Systems and Rehabilitation Engineering.