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Human Frequency Following Responses to Voice Pitch: Relative Contributions of the Fundamental Frequency and Its Harmonics

Costilow, Cassie E.
http://rave.ohiolink.edu/etdc/view?acc_num=ouhonors1275684866

Abstract Details

2010, Bachelor of Science (BS), Ohio University, Hearing, Speech and Language Science.
The phenomenon of the “missing fundamental frequency” has shown that when the f0 is removed from a complex stimulus the pitch of the f0 is still perceived. This ability for normal hearing adults to process changes in voice pitch has been studied through psychophysical experiments. Through the use of the frequency following response (FFR), relative contributions of the f0 and its harmonics to pitch perception can be examined to determine the role of place cues and temporal cues in pitch processing in the human brainstem. The current study examined the contribution of the f0 and its harmonics in pitch processing by systematically manipulating the speech stimulus to remove component frequencies. It was hypothesized that as the f0 and part of its harmonic components were removed from the stimulus, FFRs would remain stable (in support of the temporal theory), while a response would also be identifiable when only the f0 is preserved (in support of the place theory). FFRs were recorded to seven experimental conditions including the intact, no-f0, harmonics-only and f0-only conditions. A control condition was conducted with the sound tube plugged and moved away from the participants. The results showed distinguishable FFRs in all conditions (except the control condition), with significantly larger FFR Pitch Strength in response to the harmonics-only conditions than those obtained in the f0-only condition (one-way ANOVA, p<0.001). This finding was in support of both the temporal and place theories, with temporal cues contributing more to pitch processing in the human brainstem than place cues.
Fuh-Cherng Jeng, MD, PhD (Advisor)
27 p.
Audiology
frequency following response; FFR; fundamental frequency; harmonics; temporal cues; place cues

Recommended Citations

Citations

  • Costilow, C. E. (2010). Human Frequency Following Responses to Voice Pitch: Relative Contributions of the Fundamental Frequency and Its Harmonics [Undergraduate thesis, Ohio University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=ouhonors1275684866

    APA Style (7th edition)

  • Costilow, Cassie. Human Frequency Following Responses to Voice Pitch: Relative Contributions of the Fundamental Frequency and Its Harmonics. 2010. Ohio University, Undergraduate thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=ouhonors1275684866.

    MLA Style (8th edition)

  • Costilow, Cassie. "Human Frequency Following Responses to Voice Pitch: Relative Contributions of the Fundamental Frequency and Its Harmonics." Undergraduate thesis, Ohio University, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=ouhonors1275684866

    Chicago Manual of Style (17th edition)

ouhonors1275684866
799
© 2010, all rights reserved.
This open access ETD is published by Ohio University Honors Tutorial College and OhioLINK.
Release 3.2.12