What is LUMO?
LUMO is a functional near-infrared spectroscopy (fNIRS) ecosystem. The three elements are the tile, cap and hub.
LUMO provides continuous, high-density multi-distance sampling, reducing false positives with its inherent short-separation channels. Lightweight and wearable, LUMO requires no optical fibres and is suitable for all ages and environments. LUMO’s flexible configuration allows you to instantly switch between different caps and array configurations, and the unique scalable design allows you to upgrade as your research needs change.
Watch our video to learn more, and contact us for a quote.
LUMO’s ground-breaking modular design consists of independent hexagonal sensor tiles that can be easily connected into any cap at any location to form a high-density fNIRS or diffuse optical tomography (DOT) array.
Key features of the tile
Each tile has 3 dual-wavelength sources and 4 detectors
Features anti light-piping design
High quality optical filters to maximise ambient light rejection
Intra-tile measurements at 10 mm and 20 mm separation, cross-tile measurements up to 50 mm
Ergonomic features making cap connection simple and fast
Designed to work with 3D positioning systems
Lightweight - less than 6 g
Each cap contains a set of docks, into which any tile can be inserted, making array configuration simple and fast. The docks are connected together using an innovative flexible printed circuit design that allows the cap to stretch and accommodate different head shapes.
Bespoke caps with custom array design are available in sizes ranging from newborn infant to adult.
Removable light guides make contact with the scalp and can be selected to suit different hair types and populations.
Key features of the cap
Made from flexible, high quality neoprene
Circumferences range from 34 to 62 cm
Adjustable chin strap to align correctly to the head
10-10 positioning markers
Velcro cable strain relief
Customisable dock layouts
Removable light guides
When operating in cabled mode, each cap is connected to the hub by a flexible, light-weight cable. The hub then connects via USB to the control laptop. Each hub can be connected to up to three LUMO caps simultaneously to allow multi-subject hyperscanning.
Enabling fully wireless operation of your LUMO system, the wireless hub is designed to be worn on the upper arm, or tucked into a pocket. It is perfectly suited to wireless neuroimaging applications including studies of movement, of naturalistic stimuli, and of infants in an everyday environment.
LUMO: beyond fNIRS
By allowing measurement channels to be formed from a wide range of source-detector distances across multiple tiles, LUMO provides consistent, even coverage of the brain. With LUMO you can be confident that you will not miss an area of the cortex because of sparse, uneven sampling.
High-density sampling has been extensively demonstrated to provide more reliable measurements of brain function than traditional fNIRS approaches. Systems that only measure at one distance (e.g. 30 mm) are highly susceptible to signal contamination arising from the scalp.
LUMO provides multiple short-separation channels for every source and detector, which allows the scalp signal to be detected, isolated and removed. Only with high-density sampling can users be confident that the signal they record is truly from the brain.
Left: a typical optical fibre array consisting of 10 source and 10 detector locations arranged in a grid design to provide 30 fNIRS channels all with a separation of 30 mm.
Right: the 12-tile LUMO prefrontal array provides more than 400 fNIRS channels with separations in the range 10 to 40 mm. LUMO provides an average cortical sensitivity 100x that of traditional fNIRS.