Starstim fNIRS 

Starstim/NIRS is the most modern wireless solution for brain stimulation and imaging.

Combine transcranial electrical stimulation (tES: tDCS, tACS, tRNS) and electroencephalography (EEG) with functional near-infrared spectroscopy (fNIRS) in one single headset.

Combine fNIRS, tES and EEG

Starstim x BRITE

The Starstim fNIRS package includes Neuroelectrics® StarStim (tES and EEG) and Artinis Brite / Brite Lite, both non-invasive and wearable technologies. It allows clinicians and researchers to measure resting-state and task-related prefrontal cortical activity (EEG) and/or hemodynamics (fNIRS) before, during, and after transcranial electrical stimulation in real-world settings.

In addition to the equipment provided, the Starstim NIRS package includes online assistance by Silverline Research on how to integrate these two state-of-the-art devices or to tailor the Starstim with another neuroimaging device specifically according to your research or clinical needs. Silverline Research expertise can also provide specialized online or on-site training (1-5 days) to integrate tES with neuroimaging (EEG and fNIRS) through every step as well as other neurophysiological techniques (TMS, fMRI) and applications (cognition, motor control, sports and virtual reality).

Starstim fNIRS specifications

Optimized transcranial Electrical Stimulation Software

OpteStim OxySoft final.jpg

OptEStim software

OptEStim is add-on software compatible with the Starstim NIC2 and Brite/ Brite Lite Oxysoft software, which offers advanced software-level capabilities for brain-state determination on an easy-to-use graphical user interface that allows real-time monitoring and analysis of EEG and fNIRS metrics using the streaming feature (e.g. EEG-Alpha peak, COG and fNIRS-O2Hbmean), including proprietary algorithms to determine heart rate (HR) and variability (HRV) from fNIRS signals.

The software also provides different open-loop (i.e., standard tES protocols) and closed-loop (Entrainment and Conditional programs included) programs to run experiments using the Starstim tES parameters (tDCS, tACS, tRNS and hybrid tDCS/tACS/tRNS) using EEG and/or fNIRS metrics as user-defined thresholds to close the loop. The Entrainment closed-loop program allows the user to define the EEG metric (e.g., initial Alpha peak power) to close the loop; while the Conditional closed-loop program allows both EEG (e.g., Alpha COG, Gamma peak power) and fNIRS (Mean O2Hb, HHb, HR, HRV) metrics to set the threshold for tES.

This OptEStim software solution offers the simplest and quickest way to get started on leading advanced brain state monitoring and closed-loop experiments without the demanding software development and training times. Therefore enabling faster tES protocol development and pilot testing of protocols for further research and clinical projects. Bespoke closed-loop programs can be developed for your specific research needs.

Functionalities

NIRS functionality

  • Number of channels: 8 or 27 channels

  • Sampling rate: up to 150 Hz

  • Light source: LED (2x wavelengths per transmitter)

  • Wavelengths: 760, 850 nm

  • Optode distance: 30 mm

EEG functionality

  • Number of channels: 8, 20, or 32 channels

  • Sampling rate: 500 Hz

  • Bandwidth: 0 to 125 Hz (DC coupled)

  • Resolution: 24 bits – 0,05 µV resolution

  • Noise: < 1 µV RMS

  • CMRR: -115 dB

  • Input impedance: 1 GΩ

Stimulation functionality

  • Number of channels: 8, 20, or 32 channels

  • Sampling rate: 1000 Hz

  • Frequency range: 0 to 250 Hz (tACS) and 0 to 500 Hz (tRNS)

  • Stimulation types: tDCS, tACS and tRNS

  • Maximum current per channel: ± 2mA

  • Current accuracy: 1%

  • Current resolution: 1 μA

  • Voltage: ± 15 V per electrode (30 V potential difference)

Starstim fNIRS package

STARSTIM+fNIRS+kit.jpg 
What's in the box?

  • 1 x NeuroElectrics Starstim

  • 1 x Artinis Brite / Brite Lite

  • Specialized training by Silverline Research

  • Optional Advanced Support with OptEStim software and/or on-site training

Sarah Mason, University College London.

“We are very grateful for all the help and support we received. We can always rely on Artinis and their team.”

Artinis NIRS products are intended to be used for research applications only. Our products are not sold as Medical Device as defined in Medical Device Regulation (EU) 2017/745. Our products are not designed or intended to be used for the diagnosis or treatment of disease.