These datasets provide supporting materials for the manuscript titled ‘Co-oscillations of vocal membranes and ventricular folds as a novel way of vocalization in macaques’. To explore a functional role of ventricular folds in the sound production of rhesus macaques (Macaca mulatta), physical model and excised larynx experiments were carried out. The physical model was constructed based on a micro-computed tomography (micro-CT) measurement of a larynx extracted from a rhesus macaque individual (referred to as the CT model). 1. CT model experimentsExperiments on flow-induced oscillations of the CT model were performed under five settings (VM, VF, FVF, 0Degrees, 15Degrees). In these settings, two parameters were adjusted. The first one was the ventricular fold position, which determined the distance between the left and right ventricular folds in mediolateral axis to control the adduction level of the ventricular folds. The second one was the vocal fold angle, which controlled the adduction level of the vocal membranes. For each of the 5 settings, 3 model instances were fabricated to be used for the flow experiment. The experiments were repeated three times for each instance. XLSX files contain simultaneous measurements of microphone signal, sound pressure level (SPL), subglottal pressure, and flow-rate (sampling frequency: 12. 5 kHz). The MP4 files contain high-speed measurements of the dynamics of the CT model (10000 fps). 1. 1 VM. xlsx, VM₁₁. mp4: The ventricular fold position was set to 3 mm, whereas the vocal fold angle was set to 15 degree. 1. 2 VF. xlsx, VF₁₁. mp4: The ventricular fold position was set to 3 mm, whereas the vocal fold angle was set to 0 degree. 1. 3 FVF. xlsx, FVF₁₁. mp4: The ventricular fold position was set to -3 mm, so that only the ventricular folds oscillated. 1. 4 0Degrees. xlsx, 0Degrees₁₁. mp4: The ventricular fold position was set to -2 mm, whereas the vocal fold angle was set to 0 degree. 1. 5 15Degrees. xlsx, 15Degrees₁₁. mp4: The ventricular fold position was set to -2 mm, whereas the vocal fold angle was set to 15 degree. 2. Excised larynx experimentsExperiments on flow-induced oscillations were performed for four macaques larynges (mm939, mm1962, mm2013, mm2163). XLSX files contain simultaneous measurements of microphone signal, sound pressure level (SPL), subglottal pressure, and flow-rate (sampling frequency: 12. 5 kHz). The MP4 files contain high-speed measurements of the excised larynx experiments (10000 fps). 2. 1 mm939ᵥf. xlsx, mm939ᵥf₁089. mp4: Excised larynx experiments of macaque mm939. 2. 2 mm1962ᵥf. xlsx, mm1962ᵥf₁138. mp4: Excised larynx experiments of macaque mm1962. 2. 3 mm2163ᵥm. xlsx, mm2163ᵥm₁174. mp4: Excised larynx experiments of macaque mm2163. 2. 4 mm2013ᵥm. xlsx, mm2013ᵥm₁065. mp4: Excised larynx experiments of macaque mm2013.
Yamamoto et al. (Thu,) studied this question.