{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,20]],"date-time":"2026-09-20T21:01:27Z","timestamp":1789938087144,"version":"4.0.1"},"reference-count":29,"publisher":"FapUNIFESP (SciELO)","issue":"1","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Arq. Neuro-Psiquiatr."],"published-print":{"date-parts":[[2017,1]]},"abstract":"<jats:p>ABSTRACT Objective: The nasal cycle, which is present in a significant number of people, is an ultradian side-to-side rhythm of nasal engorgement associated with cyclic autonomic activity. We studied the nasal cycle during REM\/non-REM sleep stages and examined the potentially confounding influence of body position on lateralized nasal airflow. Methods: Left- and right-side nasal airflow was measured in six subjects during an eight-hour sleep period using nasal thermistors. Polysomnography was performed. Simultaneously, body positions were monitored using a video camera in conjunction with infrared lighting. Results: Significantly greater airflow occurred through the right nasal chamber (relative to the left) during periods of REM sleep than during periods of non-REM sleep (p&lt;0.001). Both body position (p &lt; 0.001) and sleep stage (p &lt; 0.001) influenced nasal airflow lateralization. Conclusions: This study demonstrates that the lateralization of nasal airflow and sleep stage are related. Some types of asymmetrical somatosensory stimulation can alter this relationship.<\/jats:p>","DOI":"10.1590\/0004-282x20160178","type":"journal-article","created":{"date-parts":[[2017,1,14]],"date-time":"2017-01-14T21:35:35Z","timestamp":1484429735000},"page":"9-14","source":"Crossref","is-referenced-by-count":5,"title":["Modulation of the ultradian human nasal cycle by sleep stage and body position"],"prefix":"10.1590","volume":"75","author":[{"given":"Richard E.","family":"Frye","sequence":"first","affiliation":[{"name":"University of Pennsylvania, USA; University of Arkansas for Medical Sciences, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Deborah F.","family":"Rosin","sequence":"additional","affiliation":[{"name":"John F. Kennedy Medical Center Section of ENT, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Adrian R.","family":"Morrison","sequence":"additional","affiliation":[{"name":"University of Pennsylvania, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Fidias E.","family":"Leon-Sarmiento","sequence":"additional","affiliation":[{"name":"University of Pennsylvania, USA; Unicolciencias\/Universidad Nacional, Colombia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Richard L.","family":"Doty","sequence":"additional","affiliation":[{"name":"University of Pennsylvania, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"530","reference":[{"issue":"1","key":"ref1","doi-asserted-by":"crossref","first-page":"62","DOI":"10.1097\/00005537-199701000-00014","article-title":"Influence of age on the \u2018nasal cycle\u2019","volume":"107","author":"Mirza 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