{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,29]],"date-time":"2025-10-29T13:05:20Z","timestamp":1761743120261,"version":"3.37.0"},"reference-count":0,"publisher":"American Academy of Audiology","issue":"1","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["j am acad audiol"],"published-print":{"date-parts":[[2008,1,1]]},"abstract":"<jats:p>The cochlear microphonic (CM) may play an important role in the diagnosis of auditory neuropathy (AN) in newborns. However, since the CM tends to mirror the waveform of the acoustic stimulus, conscientious recording methodology must be applied to separate true response from artifact.\n The difficulty in achieving this separation has limited the clinical usefulness of the CM. In an effort to call attention to the importance of recording protocol when measuring the CM, the present study was designed to optimize CM recordings in humans by investigating the following parameters:\n (1) secondary minus electrode recording site (mastoid versus ear canal [EC]), (2) stimulus parameters, and (3) grounding and shielding conditions. Normative data were collected in full-term newborns (n = 7) and adults (n = 4) with no known risk factors for cochlear or retrocochlear pathology.\n Results suggest that the CM is easier to separate from stimulus artifact using an EC electrode and toneburst stimuli. In addition, electromagnetic shielding and grounding of the electrode cables and the acoustic transducer were effective in reducing and\/or eliminating stimulus artifact. Results\n from this normative study may be helpful in improving the diagnostic utility of the CM in AN and other hearing-related disorders. La microf\u00f3nica coclear (CM) puede jugar un papel importante en el diagn\u00f3stico de la neuropat\u00eda auditiva (AN) en reci\u00e9n nacidos. Sin\n embargo, dado que la CM tiende a reflejar la forma de onda del est\u00edmulo ac\u00fastico, debe aplicarse una metodolog\u00eda concienzuda de registro de est\u00edmulos para separar la verdadera respuesta del artefacto. La dificultad para lograr esta separaci\u00f3n ha limitado\n la utilidad cl\u00ednica de la CM. En un esfuerzo por llamar la atenci\u00f3n respecto de la importancia del protocolo de registro cuando se mide la CM, el estudio presente fue dise\u00f1ado para optimizar los registros de la CM en humanos, por medio de la investigaci\u00f3n de los\n siguientes par\u00e1metros: (1) sitio secundario menor del electrodo de registro (mastoides vs. canal auditivo [EC], (2) par\u00e1metros del est\u00edmulo, y (3) condiciones de aterrizaje y de escudo protector. Se colectaron datos normativos en reci\u00e9n nacidos de t\u00e9rmino\n (n = 7) y adultos (n = 4), sin factores de riesgo para patolog\u00eda coclear o retro-coclear. Los resultados sugieren que la CM es f\u00e1cil de separar de los artefactos del est\u00edmulo utilizando un electrodo EC y un est\u00edmulo de tipo burst tonal. Adem\u00e1s, el aterrizaje\n de los cabes de los electrodos y del transductor ac\u00fastico, as\u00ed como un escudo electromagn\u00e9tico fueron efectivos para reducir y\/o eliminar los artefactos del est\u00edmulo. Los resultados de este estudio normativo pueden ser \u00fatiles para mejorar la utilidad diagn\u00f3stica\n de la CM en la AN y otros trastornos relacionados con la audici\u00f3n.<\/jats:p>","DOI":"10.3766\/jaaa.19.1.5","type":"journal-article","created":{"date-parts":[[2008,5,28]],"date-time":"2008-05-28T03:14:41Z","timestamp":1211944481000},"page":"46-55","source":"Crossref","is-referenced-by-count":16,"title":["Observations on Mastoid versus Ear Canal Recorded Cochlear Microphonic in Newborns and Adults"],"prefix":"10.3766","volume":"19","author":[{"given":"Mariam","family":"Riazi","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"John A.","family":"Ferraro","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"2087","container-title":["Journal of the American Academy of Audiology"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.ingentaconnect.com\/content\/aaa\/jaaa\/2008\/00000019\/00000001\/art00005","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,2,6]],"date-time":"2025-02-06T07:54:59Z","timestamp":1738828499000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.ingentaconnect.com\/content\/10.3766\/jaaa.19.1.5"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2008,1,1]]},"references-count":0,"journal-issue":{"issue":"1","published-print":{"date-parts":[[2008,1,1]]}},"alternative-id":["1050-0545(20080101)19:1L.46;1-"],"URL":"https:\/\/doi.org\/10.3766\/jaaa.19.1.5","relation":{},"ISSN":["1050-0545"],"issn-type":[{"type":"print","value":"1050-0545"}],"subject":[],"published":{"date-parts":[[2008,1,1]]}}}