{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,11]],"date-time":"2025-10-11T02:06:40Z","timestamp":1760148400861,"version":"build-2065373602"},"reference-count":39,"publisher":"MDPI AG","issue":"5","license":[{"start":{"date-parts":[[2023,4,28]],"date-time":"2023-04-28T00:00:00Z","timestamp":1682640000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/100000049","name":"NIH\/NIA","doi-asserted-by":"publisher","award":["R21 AG070383-01","RF1 MH130637-01"],"award-info":[{"award-number":["R21 AG070383-01","RF1 MH130637-01"]}],"id":[{"id":"10.13039\/100000049","id-type":"DOI","asserted-by":"publisher"}]},{"name":"NIH\/NIHM","award":["R21 AG070383-01","RF1 MH130637-01"],"award-info":[{"award-number":["R21 AG070383-01","RF1 MH130637-01"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Algorithms"],"abstract":"<jats:p>Multimodal functional near-infrared spectroscopy\u2013functional magnetic resonance imaging (fNIRS\u2013fMRI) studies have been highly beneficial for both the fNIRS and fMRI field as, for example, they shed light on the underlying mechanism of each method. However, several noise sources exist in both methods. Motion artifact removal is an important preprocessing step in fNIRS analysis. Several manual motion\u2013artifact removal methods have been developed which require time and are highly dependent on expertise. Only a few automatic methods have been proposed. AMARA (acceleration-based movement artifact reduction algorithm) is one of the most promising automatic methods and was originally tested in an fNIRS sleep study with long acquisition times (~8 h). However, it relies on accelerometry data, which is problematic when performing concurrent fNIRS\u2013fMIRI experiments. Most accelerometers are not MR compatible, and in any case, existing datasets do not have this data. Here, we propose a new way to retrospectively determine acceleration data for motion correction methods, such as AMARA in multimodal fNIRS\u2013fMRI studies. We do so by considering the individual slice stack acquisition times of simultaneous multislice (SMS) acquisition and reconstructing high-resolution motion traces from each slice stack time. We validated our method on 10 participants during a memory task (2- and 3-back) with 6 fNIRS channels over the prefrontal cortex (limited field of view with fMRI). We found that this motion correction significantly improved the detection of activation in deoxyhemoglobin and outperformed up-sampled motion traces. However, we found no improvement in oxyhemoglobin. Furthermore, our data show a high overlap with fMRI activation when considering activation in channels according to both deoxyhemoglobin and oxyhemoglobin.<\/jats:p>","DOI":"10.3390\/a16050230","type":"journal-article","created":{"date-parts":[[2023,4,28]],"date-time":"2023-04-28T04:36:15Z","timestamp":1682656575000},"page":"230","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":3,"title":["An Automatic Motion-Based Artifact Reduction Algorithm for fNIRS in Concurrent Functional Magnetic Resonance Imaging Studies (AMARA\u2013fMRI)"],"prefix":"10.3390","volume":"16","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-3157-8801","authenticated-orcid":false,"given":"Lia Maria","family":"Hocke","sequence":"first","affiliation":[{"name":"McLean Imaging Center, McLean Hospital, 115 Mill Street, Belmont, MA 02478, USA"},{"name":"Department of Psychiatry, Harvard Medical School, 25 Shattuck St., Boston, MA 02115, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yunjie","family":"Tong","sequence":"additional","affiliation":[{"name":"Weldon School of Biomedical Engineering, Purdue University, West Lafayette, IN 47907, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Blaise deBonneval","family":"Frederick","sequence":"additional","affiliation":[{"name":"McLean Imaging Center, McLean Hospital, 115 Mill Street, Belmont, MA 02478, USA"},{"name":"Department of Psychiatry, Harvard Medical School, 25 Shattuck St., Boston, MA 02115, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2023,4,28]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"1264","DOI":"10.1126\/science.929199","article-title":"Noninvasive, infrared monitoring of cerebral and myocardial oxygen sufficiency and circulatory parameters","volume":"198","author":"Jobsis","year":"1977","journal-title":"Science"},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"1506","DOI":"10.1364\/OL.29.001506","article-title":"Improving the diffuse optical imaging spatial resolution of the cerebral hemodynamic response to brain activation in humans","volume":"29","author":"Boas","year":"2004","journal-title":"Opt. 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