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Kuo CY, Liu JW, Wang CH, Juan CH, Hsieh IH. The role of carrier spectral composition in the perception of musical pitch. Atten Percept Psychophys 2023; 85:2083-2099. [PMID: 37479873 DOI: 10.3758/s13414-023-02761-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/07/2023] [Indexed: 07/23/2023]
Abstract
Temporal envelope fluctuations of natural sounds convey critical information to speech and music processing. In particular, musical pitch perception is assumed to be primarily underlined by temporal envelope encoding. While increasing evidence demonstrates the importance of carrier fine structure to complex pitch perception, how carrier spectral information affects musical pitch perception is less clear. Here, transposed tones designed to convey identical envelope information across different carriers were used to assess the effects of carrier spectral composition to pitch discrimination and musical-interval and melody identifications. Results showed that pitch discrimination thresholds became lower (better) with increasing carrier frequencies from 1k to 10k Hz, with performance comparable to that of pure sinusoids. Musical interval and melody defined by the periodicity of sine- or harmonic complex envelopes across carriers were identified with greater than 85% accuracy even on a 10k-Hz carrier. Moreover, enhanced interval and melody identification performance was observed with increasing carrier frequency up to 6k Hz. Findings suggest a perceptual enhancement of temporal envelope information with increasing carrier spectral region in musical pitch processing, at least for frequencies up to 6k Hz. For carriers in the extended high-frequency region (8-20k Hz), the use of temporal envelope information to music pitch processing may vary depending on task requirement. Collectively, these results implicate the fidelity of temporal envelope information to musical pitch perception is more pronounced than previously considered, with ecological implications.
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Affiliation(s)
- Chao-Yin Kuo
- Institute of Cognitive Neuroscience, National Central University, No. 300, Zhongda Rd., Zhongli District, Taoyuan City, 320317, Taiwan
- Department of Otolaryngology-Head and Neck Surgery, Tri-Service General Hospital, National Defense Medical Center, Taipei City, Taiwan
| | - Jia-Wei Liu
- Institute of Cognitive Neuroscience, National Central University, No. 300, Zhongda Rd., Zhongli District, Taoyuan City, 320317, Taiwan
| | - Chih-Hung Wang
- Department of Otolaryngology-Head and Neck Surgery, Tri-Service General Hospital, National Defense Medical Center, Taipei City, Taiwan
| | - Chi-Hung Juan
- Institute of Cognitive Neuroscience, National Central University, No. 300, Zhongda Rd., Zhongli District, Taoyuan City, 320317, Taiwan
- Cognitive Intelligence and Precision Healthcare Center, National Central University, No. 300, Zhongda Rd., Zhongli District, Taoyuan City, 320317, Taiwan
| | - I-Hui Hsieh
- Institute of Cognitive Neuroscience, National Central University, No. 300, Zhongda Rd., Zhongli District, Taoyuan City, 320317, Taiwan.
- Cognitive Intelligence and Precision Healthcare Center, National Central University, No. 300, Zhongda Rd., Zhongli District, Taoyuan City, 320317, Taiwan.
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Abdul-Rahman A, Morgan W, Jo Khoo Y, Lind C, Kermode A, Carroll W, Yu DY. Linear interactions between intraocular, intracranial pressure, and retinal vascular pulse amplitude in the fourier domain. PLoS One 2022; 17:e0270557. [PMID: 35763528 PMCID: PMC9239478 DOI: 10.1371/journal.pone.0270557] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2021] [Accepted: 06/13/2022] [Indexed: 11/19/2022] Open
Abstract
Purpose To compare the retinal vascular pulsatile characteristics in subjects with normal (ICPn) and high (ICPh) intracranial pressure and quantify the interactions between intraocular pressure, intracranial pressure, and retinal vascular pulse amplitude in the Fourier domain. Materials and methods Twenty-one subjects were examined using modified photoplethysmography with simultaneous ophthalmodynamometry. A harmonic regression model was fitted to each pixel in the time-series, and used to quantify the retinal vascular pulse wave parameters including the harmonic regression wave amplitude (HRWa). The pulse wave attenuation was measured under different ranges of induced intraocular pressure (IOPi), as a function of distance along the vessel (VDist). Intracranial pressure (ICP) was measured using lumbar puncture. A linear mixed-effects model was used to estimate the correlations between the Yeo-Johnson transformed harmonic regression wave amplitude (HRWa-YJt) with the predictors (IOPi, VDist and ICP). A comparison of the model coefficients was done by calculating the weighted Beta (βx) coefficients. Results The median HRWa in the ICPn group was higher in the retinal veins (4.563, interquartile range (IQR) = 3.656) compared to the retinal arteries (3.475, IQR = 2.458), p<0.0001. In contrast, the ICPh group demonstrated a reduction in the median venous HRWa (3.655, IQR = 3.223) and an elevation in the median arterial HRWa (3.616, IQR = 2.715), p<0.0001. Interactions of the pulsation amplitude with ICP showed a significant disordinal interaction and the loss of a main effect of the Fourier sine coefficient (bn1) in the ICPh group, suggesting that this coefficient reflects the retinal vascular response to ICP wave. The linear mixed-effects model (LME) showed the decay in the venous (HRWa-YJt) was almost twice that in the retinal arteries (−0.067±0.002 compared to −0.028±0.0021 respectively, p<0.00001). The overall interaction models had a total explanatory power of (conditional R2) 38.7%, and 42% of which the fixed effects explained 8.8%, and 5.8% of the variance (marginal R2) for the venous and arterial models respectively. A comparison of the damping effect of VDist and ICP showed that ICP had less influence on pulse decay than distance in the retinal arteries (βICP = -0.21, se = ±0.017 compared to βVDist=-0.26, se = ±0.019), whereas the mean value was equal for the retinal veins (venous βVDist=-0.42, se = ±0.015, βICP = -0.42, se = ±0.019). Conclusion The retinal vascular pulsation characteristics in the ICPh group showed high retinal arterial and low venous pulsation amplitudes. Interactions between retinal vascular pulsation amplitude and ICP suggest that the Fourier sine coefficient bn1 reflects the retinal vascular response to the ICP wave. Although a matrix of regression lines showed high linear characteristics, the low model explanatory power precludes its use as a predictor of ICP. These results may guide future predictive modelling in non-invasive estimation of ICP using modified photoplethysmography.
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Affiliation(s)
- Anmar Abdul-Rahman
- Department of Ophthalmology, Counties Manukau District Health Board, Auckland, New Zealand
- Centre for Ophthalmology and Visual Science, The University of Western Australia, Perth, Australia
- * E-mail:
| | - William Morgan
- Centre for Ophthalmology and Visual Science, The University of Western Australia, Perth, Australia
- Lions Eye Institute, University of Western Australia, Perth, Australia
| | - Ying Jo Khoo
- Lions Eye Institute, University of Western Australia, Perth, Australia
- Royal Perth Hospital, Perth, Australia
| | - Christopher Lind
- Neurosurgical Service of Western Australia, Sir Charles Gairdner Hospital, Nedlands, Western Australia, Australia
- Department of Surgery, University of Western Australia, Crawley, Western Australia, Australia
| | - Allan Kermode
- Centre for Neuromuscular and Neurological Disorders, Perron Institute for Neurological and Translational Science, Sir Charles Gairdner Hospital Department of Neurology and Clinical Neurophysiology, Nedlands, Western Australia, Australia
- Institute for Immunology and Infectious Disease, Murdoch University Faculty of Health Sciences, Murdoch, Western Australia, Australia
| | - William Carroll
- Centre for Neuromuscular and Neurological Disorders, Perron Institute for Neurological and Translational Science, Sir Charles Gairdner Hospital Department of Neurology and Clinical Neurophysiology, Nedlands, Western Australia, Australia
| | - Dao-Yi Yu
- Centre for Ophthalmology and Visual Science, The University of Western Australia, Perth, Australia
- Lions Eye Institute, University of Western Australia, Perth, Australia
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Jiang C, Li Y, Liu Q, Zhou X, Luo SN. A 532 nm fiber-optic displacement interferometer for low-velocity impact experiments. THE REVIEW OF SCIENTIFIC INSTRUMENTS 2018; 89:023101. [PMID: 29495865 DOI: 10.1063/1.4989767] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Conventional fiber-optic displacement interferometers operated at 1550 nm suffer from low temporal or velocity resolution for lower velocity measurements. To overcome this drawback, a fiber-optic Doppler pin system operated at 532 nm is developed, and its capability is demonstrated with low-velocity plate impact experiments. The new instrument would be an important supplemental to the existed systems.
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Affiliation(s)
- Chaoqun Jiang
- The Peac Institute of Multiscale Sciences, Chengdu, Sichuan 610031, People's Republic of China
| | - Yang Li
- The Peac Institute of Multiscale Sciences, Chengdu, Sichuan 610031, People's Republic of China
| | - Qiancheng Liu
- The Peac Institute of Multiscale Sciences, Chengdu, Sichuan 610031, People's Republic of China
| | - Xianming Zhou
- The Peac Institute of Multiscale Sciences, Chengdu, Sichuan 610031, People's Republic of China
| | - S N Luo
- The Peac Institute of Multiscale Sciences, Chengdu, Sichuan 610031, People's Republic of China
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