1. Fiber Optic Button Response System (PST)

PST has engineered the Fiber Optic Button Response System to accurately gather participant responses and verify signals.

The Fiber Optic Button Response Units attach to the participant’s wrists and can be comfortably adjusted during scanning. The units are constructed almost entirely from plastic, completely eliminating all metal inside the magnet room. The units communicate button presses through fiber optic cabling which connects to a Fiber Optic Interface Console located in the control room through an available wave guide.

The Fiber Optic Interface Console provides real-time feedback of participant responses via LED indicators and includes a set of switches which can be used to make responses for the participant as needed. The system seamlessly integrates with E-Prime® through a serial connection and other software packages through a USB connection. TTL output signals can be used to interface with other data collection devices and software. The interface console comes with a BNC Connector that allows the computer to accept a TTL Pulse that the stimulus presentation computer interprets as another button press, allowing the user to synchronize their experiments with the MR scanner.

The new Celeritas™ Series response units are assembled using high-impact, chemical resistant, medical grade plastic. The chemical resistance allows for repeated cleaning without degradation of the material or color. The new Celeritas Series response units include a tactile indicator to ensure correct finger placement during experiments. The new units also give you the ability to adjust the wrist sled for a more comfortable fit.

The Fiber Optic Button Response System includes:

Right and Left hand five-button response units (BRUs)

BRU console with LEDs displaying participant responses

BNC connector for trigger pulse input

Magnet room wall mount holder for BRUs and cabling

14-meter fiber cables (or 45.9 ft.) (28-meter cables available for an additional cost)

Operator manual

Fiber Optic Interface Console

Fiber Optic Button Response Unit Options:

Celeritas Series

Celeritas 5

Series 1  DISCONTINUED

Celeritas Series response units also available in custom layouts:

Celeritas Series

Celeritas 3

Celeritas 2

This product is intended for research use only.

2. Lumina LP 400 system (Cedrus)

The Lumina LP-400 is a reliable patient response system designed specifically for use in an fMRI. Lumina was developed to satisfy the requirements of both the clinical and research fields. The system consists of the following main components:

- A controller (shown on the right) provides TTL and serial port output that is compatible with E-Prime, Presentation, SuperLab, Cambridge Research Systems, and other packages. The controller provides a scanner trigger input as well.

- One of the response pads, or button response unit (BRU) pictured below. All models are built from 100% fiber optics and plastic, and come with 16 feet of fiber optic cables.

- Two 65 foot shielded cables

The most frequently asked question is how a Lumina system is installed. The following diagram gives an overview:

A Response Pads: These are built of 100% plastic and fiber optics. They are totally inert and safe.

B OTEC Unit: Converts electricity to light and is connected to the pads via protected fiber optic cables.

C Shielded Cable: Connects the OTEC unit to the penetration panel. Uses wires and connectors of the highest quality.

D RF Filter: Optionally installed if the penetration panel does not have a built-in filter.

E Shielded Cable: Connects the penetration panel to the controller.

F Controller: Detects key presses, times them, performs TTL I/O, and connects to the host computer. See Controller Features for all the features built into this versatile device.

G Serial Cable: Connects the controller to the host computer.

There are two other optional connections not shown on the diagram:

• Scanner Trigger Input: The Lumina controller can detect the scanner triggers and pass them through to the serial port.

• Accessory Connector: Provides a highly configurable TTL input/output link.

Please have a look at the website of Cedrus for all available models