{"id":"HHS-OASH-2026-0397-1954","number":"1954","name":"P G","organization":"","posted":"2026-10-09T04:00Z","received":"2026-10-08T04:00Z","body":"See attached file(s)\n\nMobile phone affects cerebral blood flow\nin humans\n2006\n\nAbstract\nMobile phones create a radio-frequency electromagnetic field (EMF) around them when in use, the\neffects of which on brain physiology in humans are not well known. We studied the effects of a\ncommercial mobile phone on regional cerebral blood flow (rCBF) in healthy humans using positron\nemission tomography (PET) imaging. Positron emission tomography data was acquired using a\ndouble-blind, counterbalanced study design with 12 male subjects performing a computer-\ncontrolled verbal working memory task (letter 1-back). Explorative and objective voxel-based\nstatistical analysis revealed that a mobile phone in operation induces a local decrease in rCBF\nbeneath the antenna in the inferior temporal cortex and an increase more distantly in the prefrontal\ncortex. Our results provide the first evidence, suggesting that the EMF emitted by a commercial\nmobile phone affects rCBF in humans. These results are consistent with the postulation that EMF\ninduces changes in neuronal activity.\n\nJournal of Cerebral Blood Flow & Metabolism advance online publication, 22 February 2006; doi:10.1038/sj.jcbfm.9600279\n\nKeywords: cerebral blood flow; electromagnetic field; human; mobile phones; positron emission tomography\n","attachments":["https://downloads.regulations.gov/HHS-OASH-2026-0397-1954/attachment_1.pdf"],"attachment_inventory":true,"withheld":false,"source":"https://www.regulations.gov/comment/HHS-OASH-2026-0397-1954","tags":["sleep-cognition","biology-metabolism","exposure-places","research-evidence"],"source_hash":"850a62a76d0ace7c38eea2dd66c20b76d8fc76ef4d45e911f9247359fe435767","slug":"sleep-cognition-comment-1954","classification":{"id":"HHS-OASH-2026-0397-1954","body_sha256":"abc71ac88e7ee9793a1d08a86fc69df193bf94b05e21d1f3cc13f46f46058d59","status":"ai_reviewed","primary_topic":"research","topics":[{"id":"research","evidence":"mission tomography data was acquired using a\ndouble-blind, counterbalanced study design with 12 male subjects pe"},{"id":"neurological","evidence":"See attached file(s)\n\nMobile phone affects cerebral blood flow\nin humans\n2006\n\nAbstract\nMobile phones create a radio-"}],"summary":"Provides a study abstract reporting regional cerebral blood-flow changes during mobile-phone exposure in twelve male participants; the attached full paper is unread.","reviewed_at":"2026-10-10T00:02:05Z","review_method":"Complete published comment-body review; identical previously reviewed bodies reused with separate official IDs preserved. Attachments and external links not reviewed.","review_source_sha256":"ce332b3754f298f035b2d629f5490be4da6f2fe939e76f52f0c5d9f12c9ca3fc","source_url":"https://rfsafe.net/hhs-comments/data/catalog.json","scope":"Original comment body; attachments excluded"},"forum_topics":["research","neurological"],"primary_topic":"research","forum_title":"Provides a study abstract reporting regional cerebral blood-flow changes during mobile-phone exposure in …"}