{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,18]],"date-time":"2026-08-18T16:37:20Z","timestamp":1787071040517,"version":"build-2736575974"},"reference-count":5,"publisher":"Ovid Technologies (Wolters Kluwer Health)","issue":"5","content-domain":{"domain":["lww.com","ovid.com"],"crossmark-restriction":true},"short-container-title":[],"published-print":{"date-parts":[[2021,9]]},"abstract":"<jats:p>The use of intraoperative neurophysiological monitoring is a helpful tool during surgeries of conus medullaris tumors and helps in reducing the risk of post-operative functional compromise like paraparesis, sensory deficits, or urological dysfunctions. External anal sphincter (EAS) motor evoked potential (MEP) monitoring is usually done for monitoring sacral nerve roots and to prevent post-operative neurological deficits. Here we describe a case where unilateral motor cortical stimulation aided us to differentiate the laterality of TcMEP responses in EAS.<\/jats:p>","DOI":"10.4103\/0028-3886.329530","type":"journal-article","created":{"date-parts":[[2024,9,7]],"date-time":"2024-09-07T15:06:12Z","timestamp":1725721572000},"page":"1354-1355","update-policy":"https:\/\/doi.org\/10.1097\/lww.0000000000001000","source":"Crossref","is-referenced-by-count":2,"title":["Unilateral External Anal Sphincter MEP Monitoring in a Case of Conus Medullaris Tumor"],"prefix":"10.4103","volume":"69","author":[{"given":"Nitin","family":"Manohar","sequence":"first","affiliation":[{"name":"Associate Staff Physician, Anaesthesia Institute, Cleveland Clinic, Abudhabi, UAE"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Astha","family":"Palan","sequence":"additional","affiliation":[{"name":"Neuroanesthesia and Neurocritical Care, Yashoda Hospitals, Secunderabad, Telangana, India"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"ST","family":"Manjunath","sequence":"additional","affiliation":[{"name":"Neuroanesthesia and Neurocritical Care, Yashoda Hospitals, Secunderabad, Telangana, India"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ravi Kumar","family":"Manchala","sequence":"additional","affiliation":[{"name":"Neuroanesthesia and Neurocritical Care, Yashoda Hospitals, Secunderabad, Telangana, India"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"276","published-online":{"date-parts":[[2021,10,30]]},"reference":[{"key":"R1-20250925","doi-asserted-by":"crossref","first-page":"247","DOI":"10.1007\/s00381-009-1020-6","article-title":"Intraoperative neurophysiology of the conus medullaris and cauda equina","volume":"26","author":"Kothbauer","year":"2010","journal-title":"Childs Nerv Syst"},{"key":"R2-20250925","doi-asserted-by":"crossref","first-page":"1","DOI":"10.1023\/B:JOCM.0000025283.58815.89","article-title":"Activation of the external anal and urethral sphincter muscles by repetitive transcranial cortical stimulation during spine surgery","volume":"18","author":"Haghighi","year":"2004","journal-title":"J Clin Monit Comput"},{"key":"R3-20250925","doi-asserted-by":"crossref","first-page":"97","DOI":"10.1016\/0022-510X(83)90084-9","article-title":"The overlapping innervation of the two sides of the external anal sphincter by the pudendal nerves","volume":"59","author":"Wunderlich","year":"1983","journal-title":"J Neurol Sci"},{"key":"R4-20250925","doi-asserted-by":"crossref","first-page":"58","DOI":"10.1136\/gut.45.1.58","article-title":"Laterality effects of human pudendal nerve stimulation on corticoanal pathways: Evidence for functional asymmetry","volume":"45","author":"Hamdy","year":"1999","journal-title":"Gut"},{"key":"R5-20250925","doi-asserted-by":"crossref","first-page":"32","DOI":"10.1016\/S0016-5085(99)70547-0","article-title":"The cortical topography of human anorectal musculature","volume":"117","author":"Turnbull","year":"1999","journal-title":"Gastroenterology"}],"container-title":["Neurology India"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.ovid.com\/10.4103\/0028-3886.329530","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,8,18]],"date-time":"2026-08-18T15:40:39Z","timestamp":1787067639000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.ovid.com\/10.4103\/0028-3886.329530"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2021,9]]},"references-count":5,"journal-issue":{"issue":"5","published-print":{"date-parts":[[2021]]}},"URL":"https:\/\/doi.org\/10.4103\/0028-3886.329530","relation":{},"ISSN":["0028-3886","1998-4022"],"issn-type":[{"value":"0028-3886","type":"print"},{"value":"1998-4022","type":"electronic"}],"subject":[],"published":{"date-parts":[[2021,9]]},"assertion":[{"value":"2019-12-26","name":"received","label":"Received","group":{"name":"publication_history","label":"Publication History"}},{"value":"2020-06-14","name":"accepted","label":"Accepted","group":{"name":"publication_history","label":"Publication History"}}]}}