254
Participants
Start Date
October 5, 2007
Primary Completion Date
December 13, 2022
Study Completion Date
December 13, 2022
MRI
The imaging study will use a block design to (i) optimize amygdala activation to emotionally valenced images, (ii) to optimize analysis of PPI and (iii) to optimize the go/no-task design. G. T2-sensitive functional images will be obtained on a MRI system with a 1.5 Tesla superconducting magnet and a standard head coil. An echo planar image sequence (TR=2500msec, TE=33 msec, 90 flip angle) with 30 contiguous 2mm thick coronal oblique slices with 1 mm interslice gap centered over the amygdala, tilted 30 to the anterior, to improve susceptibility artifact. Three-dimensional anatomical images will be taken for the co-registration of the functional images.
National Institutes of Health Clinical Center, Bethesda
Rhode Island Hospital (RIH), Providence
National Institute of Neurological Disorders and Stroke (NINDS)
NIH