{"id":{"repo_id":"uiuc","oai_identifier":"oai:www.ideals.illinois.edu:2142/70678"},"canonical_url":"https://search.dev.ndltd.org/etd/uiuc/oai:www.ideals.illinois.edu:2142/70678","repository":{"repo_id":"uiuc","name":"University of Illinois - Urbana-Champaign","base_url":"https://www.ideals.illinois.edu/oai-pmh"},"display":{"title":"Frequency-Discrimination Performance of Normal-Hearing and Hearing-Impaired Listeners","abstract":"Frequency-discrimination data were obtained for 12 normal-hearing and six hearing-impaired subjects with a 3-interval, 2-cued, yes/no task for a variety of signals. These signals included pure tones, fixed-bandwidth (400 Hz) narrow-band noise and ratio-bandwidth (20%) narrow-band noise. Analyses included response factors in frequency discrimination, comparison of the data from the normal-hearing subjects with published data, relation of the pure-tone and narrow-band noise tasks and performance of the hearing-impaired subjects.","abstract_html":"Frequency-discrimination data were obtained for 12 normal-hearing and six hearing-impaired subjects with a 3-interval, 2-cued, yes/no task for a variety of signals. These signals included pure tones, fixed-bandwidth (400 Hz) narrow-band noise and ratio-bandwidth (20%) narrow-band noise. Analyses included response factors in frequency discrimination, comparison of the data from the normal-hearing subjects with published data, relation of the pure-tone and narrow-band noise tasks and performance of the hearing-impaired subjects.","abstract_has_math":false,"creators":["Matthies, Melanie Lynne"],"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":[],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2014,"date_issued":"2014-12-16T00:59:13Z","date_published":"2014-12-16T00:59:13Z","updated_at":"2026-07-22T22:26:03Z","subjects":["Health Sciences, Audiology"],"languages":[],"rights":[],"rights_urls":[],"identifier_entries":[{"key":"dc:identifier","label":"Identifier","values":["(UMI)AAI8502238"],"render_values":[{"text":"(UMI)AAI8502238","href":null,"code":true}]}]},"links":{"outbound_url":"http://hdl.handle.net/2142/70678","outbound_label":"Handle","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:creator","label":"Author","values":["Matthies, Melanie Lynne"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2014-12-16T00:59:13Z","10000-01-01","1984"]},{"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"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["http://hdl.handle.net/2142/70678","(UMI)AAI8502238"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["Frequency-discrimination data were obtained for 12 normal-hearing and six hearing-impaired subjects with a 3-interval, 2-cued, yes/no task for a variety of signals. These signals included pure tones, fixed-bandwidth (400 Hz) narrow-band noise and ratio-bandwidth (20%) narrow-band noise. Analyses included response factors in frequency discrimination, comparison of the data from the normal-hearing subjects with published data, relation of the pure-tone and narrow-band noise tasks and performance of the hearing-impaired subjects.","Response factors included criterion as measured by the Beta statistic, sequential effects as described by auto-correlation calculations and learning effects as summarized by the number of practice blocks to stable and asymptotic performance. A wide range of frequency-discrimination results was demonstrated by the normal-hearing subjects and this range appeared to be unrelated to response factor or to threshold as measured by an adaptive 21FC procedure. The results from the hearing-impaired subjects overlapped those of the normal-hearing subjects in a number of cases and the response factors (learning, sequential effects and response criterion) were found to be very similar for both subject groups. With the hearing-impaired subjects, the relation between magnitude of hearing loss and difference limen was strongest for the 5000-Hz signals and weakest for the 500-Hz signals.","A prediction equation was derived from multiple-regression analysis which accounted for approximately 91% of the variance in frequency-discrimination performance across the 18 subjects with three factors (frequency, sensation level, and signal bandwidth) and a constant. Hearing loss affected the comparisons between pure-tone and narrow-band noise difference limina by making the differences between these smaller than would be expected from the data of the normal-hearing subjects.","Made available in DSpace on 2014-12-16T00:59:13Z (GMT). No. of bitstreams: 1 8502238.pdf: 3657389 bytes, checksum: 4168e78d99a0b70c286595b8b98db026 (MD5) Previous issue date: 1984","Embargo set by: Seth Robbins for item 70844 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","113 p.","Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 1984."]},{"key":"dc:title","label":"Title","values":["Frequency-Discrimination Performance of Normal-Hearing and Hearing-Impaired Listeners"]}]}],"canonical_facts":{"dc:creator":["Matthies, Melanie Lynne"],"dc:date":["2014-12-16T00:59:13Z","10000-01-01","1984"],"dc:description":["Frequency-discrimination data were obtained for 12 normal-hearing and six hearing-impaired subjects with a 3-interval, 2-cued, yes/no task for a variety of signals. These signals included pure tones, fixed-bandwidth (400 Hz) narrow-band noise and ratio-bandwidth (20%) narrow-band noise. Analyses included response factors in frequency discrimination, comparison of the data from the normal-hearing subjects with published data, relation of the pure-tone and narrow-band noise tasks and performance of the hearing-impaired subjects.","Response factors included criterion as measured by the Beta statistic, sequential effects as described by auto-correlation calculations and learning effects as summarized by the number of practice blocks to stable and asymptotic performance. A wide range of frequency-discrimination results was demonstrated by the normal-hearing subjects and this range appeared to be unrelated to response factor or to threshold as measured by an adaptive 21FC procedure. The results from the hearing-impaired subjects overlapped those of the normal-hearing subjects in a number of cases and the response factors (learning, sequential effects and response criterion) were found to be very similar for both subject groups. With the hearing-impaired subjects, the relation between magnitude of hearing loss and difference limen was strongest for the 5000-Hz signals and weakest for the 500-Hz signals.","A prediction equation was derived from multiple-regression analysis which accounted for approximately 91% of the variance in frequency-discrimination performance across the 18 subjects with three factors (frequency, sensation level, and signal bandwidth) and a constant. Hearing loss affected the comparisons between pure-tone and narrow-band noise difference limina by making the differences between these smaller than would be expected from the data of the normal-hearing subjects.","Made available in DSpace on 2014-12-16T00:59:13Z (GMT). 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