Functional MRI Acquisition and Stimulus Presentation

MRI scans were performed on a 3.0-Tesla MRI scanner (GE Signa EXCITE, Milwaukee, WI, USA) using an eight-channel head coil. Blood-oxygen-level-dependent (BOLD) functional MRI was acquired with T2*-weighted imaging: repetition time (TR) = 3,000 ms; echo time (TE) = 35 ms; flip angle (FA) = 90°; field of view (FOV) = 200 mm; matrix size = 96 × 96; 39 axial slices of 3-mm thickness, 0 gap. A high-resolution anatomical T1-weighted fast spoiled gradient echo imaging was acquired: FOV = 256 mm; matrix = 256 × 256; TR = 9.2 ms; TE = 3.5 ms; axial slices of 1-mm thickness, no gap. This anatomical scan was used for surface reconstruction. To minimize head movements, the participants’ heads were stabilized with foam padding. Stimuli were controlled using the PsychoPy software (Peirce, 2007 (link), 2009 (link)) and presented via an liquid-crystal display (LCD) projector to a tilted (45°) mirror positioned over the participants’ foreheads. A MR-compatible response box was used to collect responses.

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Oren N., Ash E.L., Shapira-Lichter I., Elkana O., Reichman-Eisikovits O., Chomsky L, & Lerner Y. (2019). Changes in Resting-State Functional Connectivity of the Hippocampus Following Cognitive Effort Predict Memory Decline at Older Age—A Longitudinal fMRI Study. Frontiers in Aging Neuroscience, 11, 163.

Publication 2019

Signa EXCITE eight-channel head coil

Blood oxygen level Echo Foreheads Head movements Heads Liquid crystal Mri scans Reconstruction Scan

Corresponding Organization : Rabin Medical Center

Other organizations : Tel Aviv University, Tel Aviv Sourasky Medical Center, Academic College of Tel Aviv-Yafo

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Variable analysis

independent variables

None explicitly mentioned

dependent variables

Blood-oxygen-level-dependent (BOLD) functional MRI

control variables

3.0-Tesla MRI scanner (GE Signa EXCITE, Milwaukee, WI, USA) using an eight-channel head coil
Repetition time (TR) = 3,000 ms; echo time (TE) = 35 ms; flip angle (FA) = 90°; field of view (FOV) = 200 mm; matrix size = 96 × 96; 39 axial slices of 3-mm thickness, 0 gap
High-resolution anatomical T1-weighted fast spoiled gradient echo imaging with FOV = 256 mm; matrix = 256 × 256; TR = 9.2 ms; TE = 3.5 ms; axial slices of 1-mm thickness, no gap
Head stabilization with foam padding to minimize movements
Stimuli controlled using PsychoPy software and presented via an LCD projector to a tilted (45°) mirror positioned over the participants' foreheads
MR-compatible response box used to collect responses

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