![eeg brain eeg brain](https://sharpbrains.com/wp-content/uploads/2019/05/brain-head-circuits.jpg)
![eeg brain eeg brain](https://images2.minutemediacdn.com/image/upload/c_fill,g_auto,h_1248,w_2220/f_auto,q_auto,w_1100/v1555353133/shape/mentalfloss/eeg-header.jpg)
In this case, both EEG electrodes and NIRS optodes would compete for central locations (C3, C4, Cz, etc.), but enough slits would ensure the possibility of placing electrodes and optodes as close as possible to the motor cortex. This might be relevant if, for example, you have a motor task and are using a motor cortex fNIRS montage. In general, the more slits, the closer EEG and NIRS channels can be to the scalp positions of interest. Just make sure you have an Eas圜ap with enough slits to host both actiCAP snap holders and NIRx grommet bases.įor example, if you plan on using 32 EEG electrodes and an 8×8 fNIRS montage, it is probably best to have 96 or 128 slits. The good news is that the actiCAP slim/snap electrodes and NIRSport 2 optodes can be placed adjacent to each other according to the 10-20 system (Jasper et al., 1958) on the same Eas圜ap 1. In order to combine EEG and fNIRS, we need a cap that is compatible with both types of sensors.
Eeg brain how to#
To show you how to combine LiveAmp with actiCAP slim and NIRSport 2 we will walk you through the steps that need to be considered for a successful EEG-fNIRS mobile co-registration. Considering the increased number of mobile neurophysiological studies, this article will focus on the hardware combination of Brain Products’ LiveAmp with actiCAP slim electrodes for the EEG part, and NIRx NIRSport 2 for the fNIRS part. This combination provides researchers the tools and solutions to conduct multimodal recordings in real-life/mobile settings. Introducing a mobile, multimodal EEG-fNIRS setupīrain Products and NIRx offer EEG and fNIRS amplifiers that are affordable, lightweight, wearable, and wireless. Despite the absence of interference between the two technologies, users should nevertheless keep in mind that EEG-fNIRS co-registrations are still subjected to the same artefacts commonly discussed for individual (unimodal) recordings.
![eeg brain eeg brain](https://www.kurzweilai.net/images/EEG-electrodes-brain-areas.png)
While EEG is measuring scalp potentials, fNIRS uses light to measure cortical hemodynamic response. In other words, EEG and fNIRS signals capture different events linked to the same neurophysiological activity and have complimentary properties: EEG has an exquisite temporal resolution (millisecond precision) but limited spatial resolution fNIRS has a good spatial resolution (<1 cm) but limited temporal resolution (~ 3 to 6 seconds).Ĭompared to other neurophysiological technologies, EEG and fNIRS signals do not interfere with each other, making data recording and analysis more straightforward than with other modalities (e.g. On the other hand, fNIRS is linked to the brain’s hemodynamic response, and, specifically, localizes the slower changes in oxygen metabolism that follow neural activation. On the one hand, EEG directly measures the brain’s rapid electrical activity.
![eeg brain eeg brain](https://www.bitbrain.com/sites/default/files/wet-eeg-cap-bitbrain_0.png)
Eeg brain series#
Amongst the many, the co-registration of EEG and fNIRS has a series of functional and practical advantages. Since co-registration offers the possibility to examine cortical activity more comprehensively than with one modality alone, the field has observed an increase in multimodal measurement techniques. In the last twenty years, the combination of different neurophysiological technologies has attracted the attention of neuroscience researchers. Mahipal Choudhary (Scientific Consultant, NIRx)Ĭurious about combining EEG and fNIRS for your mobile research? If the answer is yes, then check out our step-by-step guide on mobile EEG-fNIRS setup with LiveAmp, actiCAP slim/snap, and NIRSport 2.įor detailed information on a stationary EEG-fNIRS setup using actiCHamp Plus, actiCAP slim/snap, and NIRScout, please refer to this dedicated article. (Scientific Consultant, Brain Products)Īnd Dr.