Pitch ranking of complex tones by normally hearing subjects and cochlear implant users

• Published in: Hearing research Vol. 230; no. 1; pp. 80 - 87
• Main Authors: Sucher, Catherine M., McDermott, Hugh J.
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier B.V 01.08.2007; Elsevier
• Subjects: Acoustic Stimulation; Aged; Auditory Pathways - physiopathology; Biological and medical sciences; Case-Control Studies; Cochlear Implants; Cues; Ear and associated structures. Auditory pathways and centers. Hearing. Vocal organ. Phonation. Sound production. Echolocation; Ear, auditive nerve, cochleovestibular tract, facial nerve: diseases, semeiology; Female; Fundamental and applied biological sciences. Psychology; Hearing Loss - physiopathology; Hearing Loss - rehabilitation; Humans; Male; Medical sciences; Middle Aged; Music; Non tumoral diseases; Normal hearing; Otorhinolaryngology. Stomatology; Pitch Perception; Vertebrates: nervous system and sense organs; Cochlear implants; dBA; CI; ms; F0; m; Pitch perception; SD; Hz; NHMI; NA; ANOVA; NHME; CNC; dB HL; NH; dB; Normal hearing; Hearing; Complex tone; Implant; Music; Perception; Fundamental frequency
• ISSN: 0378-5955; 1878-5891
• DOI: 10.1016/j.heares.2007.05.002

The ability of 10 normally hearing (NH) adults and eight cochlear implant (CI) users to pitch-rank pairs of complex tones was assessed. The acoustically presented stimuli differed in fundamental frequency (F0) by either one or six semitones (F0 range: 98 to 740 Hz). The NH group obtained significantly higher mean scores for both experiments: (NH: one semitone – 81.2%, six semitones – 89.0%; CI: one semitone – 49.0%, six semitones – 60.2%; p < 0.001). Prior musical experience was found to be associated with higher pitch-ranking scores for the NH subjects. Those with musical experience ratings <3 obtained significantly lower scores for both interval sizes ( p < 0.001) than those with higher ratings. Nevertheless, the scores obtained by the musically inexperienced, NH adults were significantly higher than those obtained by the CI group for both the one-semitone ( p = 0.022) and six-semitone ( p = 0.018) intervals. These results suggest that the pitch information CI users obtain from their implant systems is less accurate than that obtained by NH listeners when listening to the same complex sounds. Furthermore, the relatively poor pitch-ranking ability of at least some CI users may be associated with a more-limited experience of music in general.