{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,15]],"date-time":"2026-10-15T04:09:26Z","timestamp":1792037366563,"version":"4.4.0"},"reference-count":75,"publisher":"Frontiers Media SA","license":[{"start":{"date-parts":[[2022,9,30]],"date-time":"2022-09-30T00:00:00Z","timestamp":1664496000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":["frontiersin.org"],"crossmark-restriction":true},"short-container-title":["Front. Neurosci."],"abstract":"<jats:sec><jats:title>Purpose<\/jats:title><jats:p>Previous studies found abnormal low-frequency spontaneous brain activity related to cognitive impairment in patients with obstructive sleep apnea (OSA). However, it is unclear if low-frequency spontaneous brain activity is related to specific frequency bands in OSA patients. In this study, we used the amplitude of low-frequency fluctuation (ALFF) method in patients with OSA to explore characteristics of spontaneous brain activity in the classical (0.01\u20130.1 Hz) and five sub-frequency bands (slow-2 to slow-6) and analyzed the relationship between spontaneous brain activity and clinical evaluation was analyzed.<\/jats:p><\/jats:sec><jats:sec><jats:title>Patients and methods<\/jats:title><jats:p>Resting-state magnetic resonance imaging data and clinical assessments were collected from 52 newly-diagnosed OSA patients and 62 healthy controls (HCs). We calculated the individual group ALFF values in the classical and five different sub-frequency bands. A two-sample <jats:italic>t<\/jats:italic>-test compared ALFF differences, and one-way analysis of variance explored interactions in frequency bands between the two groups.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>ALFF values in the OSA group were lower than those in the HC group in the bilateral precuneus\/posterior cingulate cortex, bilateral angular gyrus, left inferior parietal lobule, brainstem, and right fusiform gyrus. In contrast, ALFF values in the OSA group were higher than those in the HC group in the bilateral cerebellum posterior lobe, bilateral superior frontal gyrus, bilateral middle frontal gyrus, left inferior frontal gyrus, left inferior temporal gyrus, and left fusiform gyrus. Some ALFF values in altered brain regions were associated with body mass index, apnea-hypopnea index, neck circumference, snoring history, minimum SaO<jats:sub>2<\/jats:sub>, average SaO<jats:sub>2<\/jats:sub>, arousal index, oxygen reduction index, deep sleep period naming, abstraction, and delayed recall in specific frequency bands.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion<\/jats:title><jats:p>Our results indicated the existence of frequency-specific differences in spontaneous brain activity in OSA patients, which were related to cognitive and other clinical symptoms. This study identified frequency-band characteristics related to brain damage, expanded the cognitive neuroimaging mechanism, and provided additional OSA neuroimaging markers.<\/jats:p><\/jats:sec>","DOI":"10.3389\/fnins.2022.987015","type":"journal-article","created":{"date-parts":[[2022,9,30]],"date-time":"2022-09-30T06:35:44Z","timestamp":1664519744000},"update-policy":"https:\/\/doi.org\/10.3389\/crossmark-policy","source":"Crossref","is-referenced-by-count":7,"title":["Frequency-specific alterations in intrinsic low-frequency oscillations in newly diagnosed male patients with obstructive sleep apnea"],"prefix":"10.3389","volume":"16","author":[{"given":"Yaping","family":"Zeng","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yongqiang","family":"Shu","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xiang","family":"Liu","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Panmei","family":"Li","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Linghong","family":"Kong","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Kunyao","family":"Li","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Wei","family":"Xie","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Li","family":"Zeng","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ting","family":"Long","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ling","family":"Huang","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Haijun","family":"Li","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Dechang","family":"Peng","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1965","published-online":{"date-parts":[[2022,9,30]]},"reference":[{"key":"B1","doi-asserted-by":"publisher","first-page":"373","DOI":"10.1093\/sleep\/32.3.373","article-title":"Relationship between obstructive sleep apnea severity and brain activation during a sustained attention task.","volume":"32","author":"Ayalon","year":"2009","journal-title":"Sleep"},{"key":"B2","doi-asserted-by":"publisher","first-page":"169","DOI":"10.1016\/j.neuropsychologia.2016.10.003","article-title":"The role of the left inferior parietal lobule in second language learning: An intensive language training fMRI study.","volume":"98","author":"Barbeau","year":"2017","journal-title":"Neuropsychologia"},{"key":"B3","doi-asserted-by":"publisher","first-page":"1439","DOI":"10.5665\/sleep.4986","article-title":"Regional cerebral blood flow during wakeful rest in older subjects with mild to severe obstructive sleep apnea.","volume":"38","author":"Baril","year":"2015","journal-title":"Sleep"},{"key":"B4","doi-asserted-by":"crossref","first-page":"958","DOI":"10.1212\/WNL.0000000000006537","article-title":"Brainstem integration of arousal, sleep, cardiovascular, and respiratory control.","volume":"91","author":"Benarroch","year":"2018","journal-title":"Neurology"},{"key":"B5","doi-asserted-by":"publisher","first-page":"537","DOI":"10.1002\/mrm.1910340409","article-title":"Functional connectivity in the motor cortex of resting human brain using echo-planar MRI.","volume":"34","author":"Biswal","year":"1995","journal-title":"Magn. 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