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Abstract #1075

A Low-Cost Experimental Set-Up for Functional Magnetic Resonance Imaging

Carolina Arboleda1,2, Cristin Andrs Tejos1,2, Sergio Uribe, 2,3, Francisco Zamorano4, Francisco Aboitiz4, Pablo Irarrazaval1,2

1Electrical Engineering Department, Pontificia Universidad Catlica de Chile, Santiago, Chile; 2Biomedical Imaging Center, Pontificia Universidad Catlica de Chile, Santiago, Chile; 3Radiology Department, Pontificia Universidad Catlica de Chile, Santiago, Chile; 4Cognitive Neuroscience Laboratory, Pontificia Universidad Catlica de Chile, Santiago, Chile


An fMRI setup for stimuli presentation, should include a coupling circuit to connect the MR-scanner output pulse to the computer that presents the stimuli (scanner trigger detector, STD), and a Response-Detection Pad (RDP) which needs to be placed inside the scanner and, thus, can not contain any ferromagnetic materials. Currently, there are several RDC and STD commercially available, but their cost is significantly high (~3,000 USD + shipment). Here, we propose a cheap (~155 USD + shipment) setup that includes a fiber optic RDP and a photo coupler-based STD, and is compatible with current scanners and fMRI software.

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