A Comparison of Single- and Multi-Echo Processing of Functional MRI Data During Overt Autobiographical Recall.

ABSTRACT: Recent years have seen an increase in the use of multi-echo fMRI designs by cognitive neuroscientists. Acquiring multiple echoes allows one to increase contrast-to-noise; reduce signal dropout and thermal noise; and identify nuisance signal components in BOLD data. At the same time, multi-echo acquisitions increase data processing complexity and may incur a cost to the temporal and spatial resolution of the acquired data. Here, we re-examine a multi-echo dataset previously analyzed using multi-echo independent components analysis (ME-ICA) and focused on hippocampal activity during the overtly spoken recall of recent and remote autobiographical memories. The goal of the present series of analyses was to determine if ME-ICA's theoretical denoising benefits might lead to a practical differenc

SUBMITTER: Gilmore AW 

PROVIDER: S-EPMC9081814 | biostudies-literature | 2022

REPOSITORIES: biostudies-literature