{"id":{"repo_id":"uiuc","oai_identifier":"oai:www.ideals.illinois.edu:2142/72384"},"canonical_url":"https://search.dev.ndltd.org/etd/uiuc/oai:www.ideals.illinois.edu:2142/72384","repository":{"repo_id":"uiuc","name":"University of Illinois - Urbana-Champaign","base_url":"https://www.ideals.illinois.edu/oai-pmh"},"display":{"title":"Heritability of Spontaneous Otoacoustic Emissions","abstract":"Spontaneous otoacoustic emissions (SOEs) are narrow-band signals emitted from the cochlea and measured in the ear canal with a sensitive microphone. Because these emissions are correlated with sex and because sex is genetically determined, Bilger et al. (1990) hypothesized that SOEs were inherited. This twin study was planned to pursue their idea. A total of 60 sets of twins with essentially normal hearing were examined for SOEs to determine whether they were inherited. There were 30 sets of monozygotic (MZ) and 30 sets of same-sex, dizygotic (DZ) twins with an equal number of female and male twins in each twin group. Their ages ranged from 5 years 7 months to 40 years 5 months. Zygosity was determined by means of a questionnaire (Lykken et al., 1990).","abstract_html":"Spontaneous otoacoustic emissions (SOEs) are narrow-band signals emitted from the cochlea and measured in the ear canal with a sensitive microphone. Because these emissions are correlated with sex and because sex is genetically determined, Bilger et al. (1990) hypothesized that SOEs were inherited. This twin study was planned to pursue their idea. A total of 60 sets of twins with essentially normal hearing were examined for SOEs to determine whether they were inherited. There were 30 sets of monozygotic (MZ) and 30 sets of same-sex, dizygotic (DZ) twins with an equal number of female and male twins in each twin group. Their ages ranged from 5 years 7 months to 40 years 5 months. Zygosity was determined by means of a questionnaire (Lykken et al., 1990).","abstract_has_math":false,"creators":["Russell, Ann Faith"],"institution":"University of Illinois at Urbana-Champaign","degree_name":"Ph.D.","degree_level":"Dissertation","degree_discipline":"Speech and Hearing Science","degree_department":null,"school":null,"contributors":["Bilger, Robert C."],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2014,"date_issued":"2014-12-17T22:13:43Z","date_published":"2014-12-17T22:13:43Z","updated_at":"2026-07-22T22:26:06Z","subjects":["Health Sciences, Audiology","Biology, Genetics"],"languages":[],"rights":[],"rights_urls":[],"identifier_entries":[{"key":"dc:identifier","label":"Identifier","values":["(UMI)AAI9305672"],"render_values":[{"text":"(UMI)AAI9305672","href":null,"code":true}]}]},"links":{"outbound_url":"http://hdl.handle.net/2142/72384","outbound_label":"Handle","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Bilger, Robert C."]},{"key":"dc:creator","label":"Author","values":["Russell, Ann Faith"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2014-12-17T22:13:43Z","10000-01-01","1992"]},{"key":"dc:type","label":"Dc Type","values":["text"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Speech and Hearing Science"]},{"key":"thesis:degree_level","label":"Degree Level","values":["Dissertation"]},{"key":"thesis:degree_name","label":"Degree Name","values":["Ph.D."]},{"key":"thesis:institution_name","label":"Thesis Institution Name","values":["University of Illinois at Urbana-Champaign"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["Health Sciences, Audiology","Biology, Genetics"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["http://hdl.handle.net/2142/72384","(UMI)AAI9305672"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["Spontaneous otoacoustic emissions (SOEs) are narrow-band signals emitted from the cochlea and measured in the ear canal with a sensitive microphone. Because these emissions are correlated with sex and because sex is genetically determined, Bilger et al. (1990) hypothesized that SOEs were inherited. This twin study was planned to pursue their idea. A total of 60 sets of twins with essentially normal hearing were examined for SOEs to determine whether they were inherited. There were 30 sets of monozygotic (MZ) and 30 sets of same-sex, dizygotic (DZ) twins with an equal number of female and male twins in each twin group. Their ages ranged from 5 years 7 months to 40 years 5 months. Zygosity was determined by means of a questionnaire (Lykken et al., 1990).","A 60-s recording from both ears of each subject was led to an IBM-compatible computer and stored on the hard drive for later off-line analysis with Hypersignal software and supplemental, C-language programs. As a result, data acquisition and data analysis were independent.","The prevalence of SOEs among these twins was found to be P =.73. The majority had SOEs in both ears. In addition, the average number of multiple SOEs in each ear was higher than previously reported for males and females. Finally, the SOE profiles of the MZ twins were strikingly similar, whereas those for the DZ twins were different.","The intraclass correlation coefficients for the MZ twins were consistently higher than those for the DZ twins, indicating a strong genetic component. The heritability indices indicated that these emissions are a highly heritable trait. Further, the tendency to have SOEs in both ears appears to be genetically determined as does the number of SOEs in each ear. The implications of these findings were discussed.","Finally, each subject completed a lateral preference questionnaire (Porac & Coran, 1981) to determine whether handedness, footedness, eyedness, earedness, or overall congruency were predictors of SOEs. Results indicated that none of these factors were successful predictors of the presence of SOEs.","Made available in DSpace on 2014-12-17T22:13:43Z (GMT). No. of bitstreams: 1 9305672.pdf: 4601109 bytes, checksum: 5786084c86b4108e4730d6ee7b97fe73 (MD5) Previous issue date: 1992","Embargo set by: Seth Robbins for item 72552 Lift date: Forever Reason: Restricted to the U of I community idenfinitely during batch ingest of legacy ETDs","Restricted to the U of I community idenfinitely during batch ingest of legacy ETDs","U of I Only","160 p.","Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 1992."]},{"key":"dc:title","label":"Title","values":["Heritability of Spontaneous Otoacoustic Emissions"]}]}],"canonical_facts":{"dc:contributor":["Bilger, Robert C."],"dc:creator":["Russell, Ann Faith"],"dc:date":["2014-12-17T22:13:43Z","10000-01-01","1992"],"dc:description":["Spontaneous otoacoustic emissions (SOEs) are narrow-band signals emitted from the cochlea and measured in the ear canal with a sensitive microphone. Because these emissions are correlated with sex and because sex is genetically determined, Bilger et al. (1990) hypothesized that SOEs were inherited. This twin study was planned to pursue their idea. A total of 60 sets of twins with essentially normal hearing were examined for SOEs to determine whether they were inherited. There were 30 sets of monozygotic (MZ) and 30 sets of same-sex, dizygotic (DZ) twins with an equal number of female and male twins in each twin group. Their ages ranged from 5 years 7 months to 40 years 5 months. Zygosity was determined by means of a questionnaire (Lykken et al., 1990).","A 60-s recording from both ears of each subject was led to an IBM-compatible computer and stored on the hard drive for later off-line analysis with Hypersignal software and supplemental, C-language programs. As a result, data acquisition and data analysis were independent.","The prevalence of SOEs among these twins was found to be P =.73. The majority had SOEs in both ears. In addition, the average number of multiple SOEs in each ear was higher than previously reported for males and females. Finally, the SOE profiles of the MZ twins were strikingly similar, whereas those for the DZ twins were different.","The intraclass correlation coefficients for the MZ twins were consistently higher than those for the DZ twins, indicating a strong genetic component. The heritability indices indicated that these emissions are a highly heritable trait. Further, the tendency to have SOEs in both ears appears to be genetically determined as does the number of SOEs in each ear. The implications of these findings were discussed.","Finally, each subject completed a lateral preference questionnaire (Porac & Coran, 1981) to determine whether handedness, footedness, eyedness, earedness, or overall congruency were predictors of SOEs. Results indicated that none of these factors were successful predictors of the presence of SOEs.","Made available in DSpace on 2014-12-17T22:13:43Z (GMT). No. of bitstreams: 1 9305672.pdf: 4601109 bytes, checksum: 5786084c86b4108e4730d6ee7b97fe73 (MD5) Previous issue date: 1992","Embargo set by: Seth Robbins for item 72552 Lift date: Forever Reason: Restricted to the U of I community idenfinitely during batch ingest of legacy ETDs","Restricted to the U of I community idenfinitely during batch ingest of legacy ETDs","U of I Only","160 p.","Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 1992."],"dc:identifier":["http://hdl.handle.net/2142/72384","(UMI)AAI9305672"],"dc:subject":["Health Sciences, Audiology","Biology, Genetics"],"dc:title":["Heritability of Spontaneous Otoacoustic Emissions"],"dc:type":["text"],"thesis:degree_discipline":["Speech and Hearing Science"],"thesis:degree_level":["Dissertation"],"thesis:degree_name":["Ph.D."],"thesis:institution_name":["University of Illinois at Urbana-Champaign"]},"updated_at":"2026-07-22T22:26:06Z"}