{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,26]],"date-time":"2026-08-26T20:25:30Z","timestamp":1787775930193,"version":"build-2784847793"},"reference-count":32,"publisher":"Ovid Technologies (Wolters Kluwer Health)","issue":"123","license":[{"start":{"date-parts":[[2024,10,1]],"date-time":"2024-10-01T00:00:00Z","timestamp":1727740800000},"content-version":"unspecified","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by-nc-sa\/4.0"}],"content-domain":{"domain":["lww.com","ovid.com"],"crossmark-restriction":true},"short-container-title":[],"published-print":{"date-parts":[[2024,10]]},"abstract":"<jats:p>\n                    <jats:bold>Background:<\/jats:bold>\n                    Patients with multiple sclerosis (MS) experience difficulties in understanding speech in noise despite having normal hearing.\n                    <jats:bold>Aim:<\/jats:bold>\n                    This study aimed to determine the relationship between speech discrimination in noise (SDN) and medial olivocochlear reflex levels and to compare MS patients with a control group.\n                    <jats:bold>Material and methods:<\/jats:bold>\n                    Sixty participants with normal hearing, comprising 30 MS patients and 30 healthy controls, were included. For both groups, distortion product otoacoustic emissions (DPOAEs) were recorded at frequencies of 1000, 1400, 2000, 2800, 4000, 5600 and 8000 in the presence and absence of contralateral white sound at 65\u2009dB SPL. Speech discrimination tests in the presence and absence of noise, Symbol Digit Modalities Test (SDMT) and Montreal Cognitive Assessment (MoCA) scale were applied to all participants to evaluate their cognitive skills.\n                    <jats:bold>Results:<\/jats:bold>\n                    In age- and sex-matched groups, the DPOAE signal-to-noise ratio value was 6.50\u2009\u00b1\u20091.30 in the right ear at a frequency of 8000\u2009Hz in the control group and 2.40\u2009\u00b1\u20091.75 in the MS group (\n                    <jats:italic toggle=\"yes\">P<\/jats:italic>\n                    &lt; 0.05). In the comparison of suppression between ears, lower suppression was found at 1400 and 2000\u2009Hz in the left ear and 1000\u2009Hz in the right ear in the MS group (\n                    <jats:italic toggle=\"yes\">P<\/jats:italic>\n                    &lt; 0.05). In the control group, a moderately significant positive correlation existed between right ear SDN scores and left ear suppression values (\n                    <jats:italic toggle=\"yes\">P<\/jats:italic>\n                    &lt; 0.05). The cognitive functions of the MS group were lower in MoCA and SDMT (\n                    <jats:italic toggle=\"yes\">P<\/jats:italic>\n                    &lt; 0.05). Patients who scored less than 21 points in MoCA also had low suppression results (\n                    <jats:italic toggle=\"yes\">P<\/jats:italic>\n                    &lt; 0.05).\n                    <jats:bold>Conclusion:<\/jats:bold>\n                    Comprehensive evaluations are necessary to uncover the presence of auditory perception disorders, such as noise sensitivity or speech disorders in noise, amongst MS patients.\n                  <\/jats:p>","DOI":"10.4103\/nah.nah_71_23","type":"journal-article","created":{"date-parts":[[2024,12,30]],"date-time":"2024-12-30T06:01:22Z","timestamp":1735538482000},"page":"507-513","update-policy":"https:\/\/doi.org\/10.1097\/lww.0000000000001000","source":"Crossref","is-referenced-by-count":1,"title":["Effect of Medial Olivocochlear Efferents on Speech Discrimination in Noise in Multiple Sclerosis"],"prefix":"10.4103","volume":"26","author":[{"given":"Asuman","family":"K\u00fc\u00e7\u00fck\u00f6ner","sequence":"first","affiliation":[{"name":"Vocational School of Health Services, Ondokuz Mayis University, Samsun, Turkey"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"\u00d6mer","family":"K\u00fc\u00e7\u00fck\u00f6ner","sequence":"additional","affiliation":[{"name":"Faculty of Health Sciences, Ondokuz Mayis University, Samsun, Turkey"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Abdulkadir","family":"\u00d6zg\u00fcr","sequence":"additional","affiliation":[{"name":"Department of Otorhinolaryngology, Biruni University, Istanbul, Turkey"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Murat","family":"Terzi","sequence":"additional","affiliation":[{"name":"Department of Neurology, Faculty of Medicine, Ondokuz Mayis University, Samsun, 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