The Effects of the Menstrual Cycle on Vibratory Characteristics of the Vocal Folds Investigated With High-Speed Digital Imaging

Vansant, Mathew B.; Ikuma, Takeshi; McWhorter, Andrew J.

doi:10.1016/j.jvoice.2016.08.001

“…The decrease in estrogen has an impact on changes in the expression of molecules in the extracellular matrix, whereas testosterone does not affect the extracellular matrix. 40 Studies on sparrows after hatching at 3, 10 and 17 days old showed that androgen receptors can be found in the muscles around the syrinx and estrogen receptors are found in many syrinx chondrocytes. 41 Estrogens and androgens can affect the development of the syrinx of birds after hatching in the skeletal and muscular parts, but their effect on the differentiation process is unidentified.…”

Section: Discussionmentioning

confidence: 99%

An investigation of syrinx morphometry and sound frequency association during the chirping period in lovebirds (Agapornis fischeri)

Dewi

¹

,

Dhamayanti

²

,

Fikri

³

et al. 2023

View full text Add to dashboard Cite

Background: In the issue of biodiversity, the domestication of birds as pets and trade animals requires special attention as a conservation effort. Lovebirds (Agapornis fischeri) are popular birds worldwide, due to their varied ornamentation and melodic chirping sound. Syrinx structure is suspected to be the main source of sound production during the chirping period. This study aimed to investigate syrinx morphometry and its correlation with sound frequency produced in lovebirds. Methods: A total of 24 lovebirds of different ages and gender were investigated. Polymerase chain reaction method was performed to determine lovebird gender, meanwhile bird age was identified based on post-hatch recordings at the breeding farm. Thus, we enrolled male (n=12) and female (n=12) lovebirds aged 2 (n=4), 3 (n=4), and 4 (n=4) months in the investigation group, respectively. Fast Fourier Transform (FFT) was performed to evaluate sound frequency during chirping period. Then, syrinx morphometry was identified using a topographic approach and methylene blue staining. Each variable was evaluated with Image J software and vernier caliper. Results: Based on a topographical approach, we reported the general cartilage structure of the tracheosyringeal, bronchosyringeal, paired protrusions, tracheolateral muscles, sternotracheal muscles, and syringeal muscles in lovebird syrinx. In particular, the tympaniform membranes lateral lead a crucial role in modulating the frequency of male lovebirds more significantly (p=0,009) compared to female. On the other hand, the tympaniform membranes lateral dexter (p=0,02) and sinister (p=0,05) in females showed wider compared to male. We also reported a negative correlation between sound frequency compared to tympaniform membranes lateral dexter (y = -913,56x + 6770,8) and sinister (y = -706,16x + 5736). Conclusions: It can be concluded that the tympaniform membranes lateral produced the lovebirds’ primary sound. The sound frequency of male lovebirds was higher compared to female, however negatively correlated with the area of tympaniform membranes lateral.

show abstract

“…The decrease in estrogen has an impact on changes in the expression of molecules in the extracellular matrix, whereas testosterone does not affect the extracellular matrix. 38 Studies on sparrows after hatching at 3, 10 and 17 days old showed that androgen receptors can be found in the muscles around the syrinx and estrogen receptors are found in many syrinx chondrocytes. 39 different superscripts in the same row indicate significant differences (p < 0,05).…”

Section: Discussionmentioning

confidence: 99%

An investigation of syrinx morphometry and sound frequency correlation during the chirping period in lovebirds (Agapornis fischeri)

Dewi

¹

,

Dhamayanti

²

,

Fikri

³

et al. 2022

F1000Res

0

View full text Add to dashboard Cite

Background: In the issue of biodiversity, the domestication of birds as pets and trade animals requires special attention as a conservation effort. Lovebirds (Agapornis fischeri) are popular birds worldwide, due to their varied ornamentation and melodic chirping sound. Syrinx structure is suspected to be the main source of sound production during the chirping period. This study aimed to investigate syrinx morphometry and its correlation with sound frequency produced in lovebirds. Methods: A total of 24 lovebirds of different ages and gender were investigated. Polymerase chain reaction method was performed to determine lovebird gender, meanwhile bird age was identified based on post-hatch recordings at the breeding farm. Thus, we enrolled male (n=12) and female (n=12) lovebirds aged 2 (n=4), 3 (n=4), and 4 (n=4) months in the investigation group, respectively. Fast Fourier Transform (FFT) was performed to evaluate sound frequency during chirping period. Then, syrinx morphometry was identified using a topographic approach and methylene blue staining. Each variable was evaluated with Image J software and vernier caliper. Results: Based on a topographical approach, we reported the general cartilage structure of the tracheosyringeal, bronchosyringeal, paired protrusions, tracheolateral muscles, sternotracheal muscles, and syringeal muscles in lovebird syrinx. In particular, the tympaniform membranes lateral lead a crucial role in modulating the frequency of male lovebirds more significantly (p=0,009) compared to female. On the other hand, the tympaniform membranes lateral dexter (p=0,02) and sinister (p=0,05) in females showed wider compared to male. We also reported a negative correlation between sound frequency compared to tympaniform membranes lateral dexter (y = -913,56x + 6770,8) and sinister (y = -706,16x + 5736). Conclusions: It can be concluded that the tympaniform membranes lateral produced the lovebirds’ primary sound. The sound frequency of male lovebirds was higher compared to female, however negatively correlated with the area of tympaniform membranes lateral.

show abstract

“…This analysis was exploratory in nature, referencing previous research for assessment of acoustics. Similar to these previous studies which implemented no or lenient corrections, we did not control for experiment-wise error ( Bryant & Haselton, 2009 ; Chae et al, 2001 ; Celik et al, 2013 ; Fischer et al, 2011 ; Kunduk et al, 2017 ; Pavela Banai, 2017 ; Puts et al, 2013 ; Tatar et al, 2016 ). Although the current findings yield no significant differences with correction, it bears relevance to highlight impactful effect sizes in research.…”

Section: Discussionmentioning

confidence: 99%

“…However, findings of systematic variation in levels of jitter and shimmer within naturally cycling women across the menstrual cycle have been inconsistent ( Amir & Kishon-Rabin, 2004 ; Chae, Choi, Kang, Choi, & Jin, 2001 ; Higgins & Saxman, 1989 ). Furthermore, other researchers have been unable to identify any systematic acoustic changes across the menstrual cycle ( Çelik et al, 2013 ; Kunduk, Vansant, Ikuma, & McWhorter, 2017 ; Puts et al, 2013 ).…”

Section: Vocal Acoustics Across the Menstrual Cyclementioning

confidence: 99%

Fertility-Dependent Acoustic Variation in Women’s Voices Previously Shown to Affect Listener Physiology and Perception

Shoup-Knox

¹

,

Ostrander

²

,

Reimann

³

et al. 2019

View full text Add to dashboard Cite

Previous research demonstrates that listeners perceive women's voices as more attractive when recorded at high compared to low fertility phases of the menstrual cycle. This effect has been repeated with multiple voice recording samples, but one stimuli set has shown particularly robust replications. First collected by Pipitone and Gallup (2008), women were recorded counting from 1-10 on approximately the same day and time once a week for 4 weeks. Repeatedly, studies using these recordings have shown that naturally cycling women recorded at high fertility are rated as more attractive compared to voices of the same women at low fertility. Additionally, these stimuli have been shown to elicit autonomic nervous system arousal and precipitate a rise in testosterone levels among listeners. Although previous studies have examined the acoustic properties of voices across the menstrual cycle, they reach little consensus. The current study evaluates Pipitone and Gallup's voice stimuli from an acoustic perspective, analyzing specific vocal characteristics of both naturally cycling women and women taking hormonal contraceptives. Results show that among naturally cycling women, variation in vocal amplitude (shimmer) was significantly lower in high fertility recordings compared to the women's voices at low fertility. Harmonics-to-noise ratio and variation in voice pitch (jitter) also fluctuated systematically across voices sampled at different times during the menstrual cycle, though these effects were not statistically significant. It is possible that these acoustic changes could account for some of the replicated perceptual, hormonal, and physiological changes documented in prior literature using these voice stimuli.

show abstract

The Effects of the Menstrual Cycle on Vibratory Characteristics of the Vocal Folds Investigated With High-Speed Digital Imaging

Cited by 12 publications

References 21 publications

An investigation of syrinx morphometry and sound frequency association during the chirping period in lovebirds (Agapornis fischeri)

An investigation of syrinx morphometry and sound frequency association during the chirping period in lovebirds (Agapornis fischeri)

An investigation of syrinx morphometry and sound frequency correlation during the chirping period in lovebirds (Agapornis fischeri)

Fertility-Dependent Acoustic Variation in Women’s Voices Previously Shown to Affect Listener Physiology and Perception

Contact Info

Product

Resources

About