fMRI Stimulus Delivery System

Click each image for a larger view of the fMRI console system

MRA has developed a fully integrated fMRI stimulus delivery system for both clinical and research facilities. The complete system includes the fMRI stimulus delivery console, Windows XP computer system, patient response hand switches, video projection into the MRI bore, and MRI compatible patient headphones. All wiring into the MRI shielded room is connected through filters on the lab panel. The radio frequency shielding of the MRI room is not compromised by any of this equipment.

The video projection system can be tailored to meet the design of your current MRI room. The preferred method is projection through a wave guide aligned with the center of the MRI bore. The projector can also be installed inside the radio frequency shielded room. An RF shielded projector housing is available for those rooms that do not have a projector wave guide available.

All systems and audio/video switching is integrated into the user friendly fMRI stimulus delivery console.

FEATURES

• Patient Response Pad circuitry is integrated into the system. The Patient Response Pad system is a USB compliant device with drivers available for Windows and Mac OS. The fMRI console has preset configurations to allow the Patient Response Pad to accurately emulate the responses for the three most common paradigm experiment software packages. The operator can easily configure 2 switches to emulate the SuperLab, E-Prime, or Presentation stimulus programs. An indicator light is installed on the console to confirm that the Patient Response Pad drivers are properly loaded on the paradigm experiment computer.

• Five (5) Fiber Optic patient response switches are the standard configuration.
  The fMRI operator has both audible and visual responses to patient response switches.
  Response switches are configured for normally open or normally closed switching.
  Adjustable gain control of fiber optic sensors allows for use of custom patient response switches.
  Interfaces are available for any number of hand switches for your specific custom designed paradigm experiments.
  Custom designed hand switches are also available that encourage timely and accurate participation by children.

• Stereo audio system
  Bass, Treble, and Balance controls.
  Available equalizer connections.
  Separate patient and operator volume controls.
  VU meter to monitor audio levels.
  High volume cut out to prevent audio damage to patient.
  Operator to patient intercom system is separate from volume controls. The intercom system is always on to prevent loss of communications to your patient.

• 4 Audio input connections and 4 Video input connections permit the fMRI researcher to implement their own audio and video equipment into the experiment.

• Remote control of the video projector system from the operator console.

• Connection to the MRI console triggering system for synchronized activation of paradigm and MRI scanning.

• The fMRI console can be located away from the MRI operator console. A remote microphone and triggering control system is available for the MRI operator. A patient response switch indicator light is available for placement at the MRI operator position.

Click each image for a larger view of the fMRI console system installation

Contact Dennis Presky for more details on the fMRI Stimulus Delivery Console.

MRA
Dennis R. Presky, President
1480 Washington Road
Washington, PA 15301
724-225-6153

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