MedelOpt-I

Multimodal fNIRS system with built-in 8-channel EEG and an exoskeleton headset.

fNIRS + EEG • Multimodal • Exoskeleton

MedelOpt-I — fNIRS System with EEG

The first device combining full fNIRS measurement with a built-in 8-electrode EEG
in a single lightweight headset with lab-grade precision under mobile conditions.

⚡ What makes the system unique: fNIRS + EEG synergy

EEG delivers excellent temporal resolution (milliseconds),
fNIRS — high spatial resolution (millimeters).
Together: a complete picture of the brain’s neuronal and hemodynamic activity.

???? Exoskeleton headset

Spatial precision

The rigid exoskeleton structure ensures repeatable optode positioning between research sessions.

Modularity

Add more emitters and detectors without removing the headset. Scale the channel density on the fly.

Fit

Fits heads from 4-year-olds to adults. One headset for the entire lab.

VR-ready

Compatible with VR headsets (Quest, Vive). Simultaneous VR + fNIRS + EEG studies.

???? Technical specification

Module	Parameter	Value
fNIRS	Wavelengths	660 nm and 850 nm
	Emitter-detector spacing	20–55 mm (adjustable)
	Detector sampling rate	128 Hz
	fNIRS sampling rate	4 / 8 / 16 / 32 Hz (up to 64 Hz)
	ADC resolution	16 bits
EEG	Number of electrodes	8 electrodes
EEG	EEG sampling rate	512 Hz

????️ Brain regions studied

Prefrontal cortexParietal cortexLateral (temporal) cortexCerebellumWhole cortex (Infinity version)

???? Integration with the BIOPAC ecosystem

MedelOpt-I connects to AcqKnowledge and BIOPAC MP systems,
enabling synchronous fNIRS + EEG recording alongside other physiological signals:

ECG / HRVRespirationEDA / GSRPPGEMGEOG

???? MedelOpt family

Variant	Purpose
MedelOpt-I	Base fNIRS + EEG system
Mobility	High-density mapping for mobile participants
Infinity	Very high-density whole-brain mapping
Tandem	Synchronous acquisition for 2 people (hyperscanning)
fNIRS for VR	Integration with VR headsets (Quest, Vive)