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The Dana and David Dornsife Cognitive Neuroscience Imaging Center was created in response to the brain imaging needs of USC scientists seeking to understand the relation between neural and mental phenomena in humans. The Center is dedicated to pursuing structural and functional brain imaging studies using state-of-the-art techniques, to contributing to the development of future brain imaging modalities, and to disseminating knowledge about brain, mind, and neuroimaging to students and the public.
:: MR compatible monocular video-based eye tracker
:: Sampling rates: 60, 120, and 240 Hz
:: fORP fiber-optics response pad
:: Two sets of 4 buttons
:: Accepts TR trigger from scanner
:: USB interface
:: Brain Voyager QX (8 licenses)
:: Brainvox (3 workstations)
:: Curry 6
:: Analyze
:: SPM
:: FSL
:: AFNI
:: MATLAB
:: All plastic Solo Bambini "Como Sport" frame
:: Interchangeable lenses from +/-2D to +/- 7D in steps of 0.5D
:: Polycarbonate lenses, fully compatible with the eye tracker
:: Identical bore dimensions as our Siemens scanner
:: Accurately reproduced acoustic noise for typical sequences (EPI, MPRAGE, DWI)
:: Audio-visual stimulus delivery system
:: Response boxes
Here are a few things you need to know and rules to follow to ensure a quality experience for everyone.
1. To use the mockup, you must schedule in advance. The schedule for the mockup is available from the same webpage as the schedule for the scanner. The same rules for scheduling the scanner apply for scheduling the mockup (except that that is no usage fee).
2. There is a log book in the mockup room. You must sign-in and sign-out. You should note any problem you found with the mockup in the log book. The log book should not be removed from the room.
3. The primary reason for the desktop computer in the mockup room is for presenting the acoustic noise of our Siemens scanner. The acoustic noises for typical scanning sequences are available in the "Acoustic Noise" folder on the desktop. Double click on a file to play the noise. Additional controls are available once you open a file.
DO NOT remove or relocate any of the sound files. You may control the sound volume with Windows' volume control. A near-realistic simulation is when the sound volume is set at maximum. At this level, both the subject and the experimenter MUST wear the 33 dB ear plugs. The acoustic noise is designed to be played using the speakers installed around the bore. THE ACOUSTIC NOISE SHOULD NOT BE PLAYED THROUGH ANY HEADPHONE FOR SAFETY REASONS.
4. Auditory stimuli can be played through the provided headphone.
5. You may use the desktop computer to control your experiment at the same time when acoustic noise is being play. You may want to set the displays to "expanded desktop" mode so that your experiment can run on the subject's screen while you can control the acoustic noise on the the operator's screen. You may also use your own laptop to present your experiment. You may disconnect the response keypads and the subject's screen from the desktop computer. PLEASE REMEMBER TO RECONNECT THEM WHEN YOU ARE DONE.
6. Please note that visual display as seen by the subject is left-right reversed. You should make provision in your code to left-right reverse the stimuli. Most commercial software designed for MRI applications has this function built in. If you program in Matlab, it is one or three extra lines of Matlab code.
7. Manipulate the subject's mirror by its edges. DO NOT touch the middle of the mirror. It is important to training your subject on this. The subject mirror in our scanner is a first-surface mirror. Grease and sweat in contact with the reflective surface cause permanent damage to the mirror.
8. For sanitary reasons, please always use a new bed sheet for each subject. Shoes must be removed getting into the mockup.
9. Be VERY gentle with the bed movement. DO NOT ramp it to the stops. Be careful that nothing is caught in the railing or the wall of the bore.
10. The head coil in the mockup is an expensive and functional 8-channel coil. HANDLE WITH GREAT CARE!
:: 64-channel Maglink RT with new Teflon wire caps
:: Additional Quick-Caps for off-scanner recording
:: SynAmp2: 64 monopolar, 4 bipolar, 2 high-level analog
:: Polhemus Fastrack 3D digitizer
:: STIM2 -- stimulus presentation software
:: SCAN 4 -- data acquisition and artifact removal software
:: Curry 6 -- multi-modal source co-localization software
:: 3 T whole-body MR system
:: Tim (Total imaging matrix) [102 x 18]
:: TQ-engine Gradient system. Max. amplitude: 45 mT/m (longitudinal), 40 mT/m (vertical and horizontal). Max. slew rate: 200 T/m/sec
:: Active shimming: 3 linear and 5 second order channels
:: Field of view: 50 cm (max), 5 cm (min), max. matrix size: 1024x1024
:: 18 independent receiver channels with parallel imaging
:: Coils:
-- 12-channel matrix head coil
-- 8-channel phase array head coil
-- CP head coil
-- 4-channel neck matrix coil
-- 24-channel spine matrix coil
Latest static shim results (12/30/06):
Spherical diameter 10 cm
-- vrms: 0.000 ppm
Spherical diameter 22 cm
-- pk-pk: 0.055 ppm
-- vrms: 0.005 ppm
Spherical diameter 35 cm
-- pk-pk: 0.741 ppm
-- vrms: 0.041 ppm
Spherical diameter 40 cm
-- pk-pk: 1.772 ppm
-- vrms: 0.110 ppm
Spherical diameter 45 cm
-- pk-pk: 4.704 ppm
-- vrms: 0.336 ppm
Spherical diameter 50 cm
-- pk-pk: 15.055 ppm
-- vrms: 1.075 ppm
:: Christie DLV 1280-DX, 3-chip DLP projector, 1500 lumens, 500W Xenon lamp
:: Native-pixel resolution: max. 1280x1024 or smaller (default: 1024x768)
:: Refresh rate: sync accurately up to 70Hz
:: Rear-projection screen, FOV: 23.6 x 18.4 deg
:: Viewing distance: 85 cm
:: Native gamma: 1.0
:: 13-bit gamma table
:: Analog (VGA) and DVI connectors
Screen size before 1/1/2007 (TIM upgrade): 27 x 20 deg @ 75 cm
Latest measurements (4/15/06):
Gamma = 1.0
White point = 6500K
Gray-scale luminance:
White (255): 312 cd/m^2
Gray (127.5): 156 cd/m^2
Black:
CIE color coordinates at maximum intensity:
Red: x=0.663, y=0.334
Green: x=0.297, y=0.653
Blue: x=0.139, y=0.073
CIE color coordinates at half-maximum intensity:
Red: x=0.661, y=0.335
Green: x=0.298, y=0.651
Blue: x=0.140, y=0.075
Contact us for further information.
Contact us for further information.
Contact us for further information.
Dana and David Dornsife Cognitive Neuroscience Imaging Center
University of Southern California
3520A McClintock Ave
Los Angeles, CA 90089-1061
Telephone: 213-821-0731
Fax: 213-740-5372
Email: dornsife@college.usc.edu
Control room: 213-821-2199
Hanna Damasio
Director
(213) 821-0731
(213) 740-3455 (for emergency only)
E-mail: hdamasio@usc.edu
Zhong-Lin Lu
Center Co-Director
Daytime (213) 740-2282
Off hour (949) 285-4885
Bosco Tjan
Chair of Technical Committee
(310) 621-8872 (all hours)
E-mail: btjan@usc.edu
JC Zhuang
MRI Physics Manager
Daytime (213) 821-2199
Off hour (917) 822-1379
E-mail: jc.zhuang@gmail.com
USC Emergency Phone Number
(213) 740-9233
USC Public Safety (including lockout)
(213) 740-6000
Telephone: 213-821-0731
Fax: 213-740-5372
Email: dornsife@college.usc.edu