Lumina

Frequently Asked Questions (FAQs)

How is a Lumina response pad system installed?

A Lumina system consists of several parts, some installed inside the fMRI magnet room and some outside:

Response pads, built of 100% plastic and fiber optics, safe to use by patients inside the bore of the magnet.

RF filter, available from Cedrus at no cost if your penetration panel does not have a built-in filter.

OTEC unit, converts electricity to light, is connected to the pads via 5.5m (16ft) of fiber optic cables.

Shielded cable, about 21m (65ft) long, connects the penetration panel to the Lumina controller.

Shielded cable, about 21m (65ft) long, connects the OTEC unit to the penetration panel.

Preexisting penetration panel, needs to have an available DB9 cutout. See the Accessories page if you do not have such a cutout and need a replacement panel plate.

Controller, detects button presses, scanner trigger input (not shown in diagram), and provides simultaneous USB and digital output.

USB cable, connects controller to your stimulus presentation computer.

Though not shown in the diagram, you can also connect the scanner trigger to the Lumina controller, which in turn forwards that information to its USB port and its Accessory Connector.

Can I use more than one set of pads?

Yes. This requires two each of parts A, B, C, and E, plus a low-cost Copper Outpost. The outpost is a signal multiplexer that allows two OTEC units (B) to become “visible” to the controller.

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