How does change of displayed sound pressure level affect human's biological function ? -evaluation of effects based on time-frequency analysis to investigate autonomic nervous system-

Hypertension is a common and chronic disease and causes severe damage to patients’ health. Blood pressure of a human being is controlled by the autonomic nervous system. Heart rate variability (HRV) is an impact of the autonomic nervous system and an indicator of the balance of the cardiac sympathetic nerve and vagus nerve. HRV is a good method to recognize the severity of hypertension due to the specificity for prediction. In this paper, we proposed a novel fine-grained HRV analysis method to enhance the precision of recognition. In order to analyze the HRV of the patient, we segment the overnight electrocardiogram (ECG) into various scales. 18 HRV multidimensional features in the time, frequency, and nonlinear domain are extracted, and then the temporal pyramid pooling method is designed to reduce feature dimensions. Multifactor analysis of variance (MANOVA) is applied to filter the related features and establish the hypertension recognizing model with relevant features to efficiently recognize the patients’ severity. In this paper, 139 hypertension patients’ real clinical ECG data are applied, and the overall precision is 95.1%. The experimental results validate the effectiveness and reliability of the proposed recognition method in the work.

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Autonomic Nervous System Monitoring of Patients with Excess Parasympathetic Responses to Sympathetic Challenges—Clinical Observations

US Neurology ◽

10.17925/usn.2010.05.02.62 ◽

2010 ◽

Vol 05 (02) ◽

pp. 62 ◽

Cited By ~ 25

Author(s):

Hal Tobias ◽

Alan Vinitsky ◽

Robert J Bulgarelli ◽

Samanwoy Ghosh-Dastidar ◽

Joe Colombo ◽

...

Keyword(s):

Heart Rate ◽

Nervous System ◽

Autonomic Nervous System ◽

Peripheral Circulation ◽

Clinical Effects ◽

Common Assumption ◽

Time Frequency ◽

Autonomic Nervous ◽

Clinical Observations ◽

Normal Heart Rate

A common assumption regarding the autonomic nervous system is that one branch either opposes the other or does not respond during physiological challenges. Recently, this assumption has been challenged based on clinical observations of unprovoked parasympathetic (P) excess (PE) during sympathetic (S) stimulation, an abnormal response. Over a three-year period, serial autonomic profiling of 1,340 patients was performed using the P and S method, which yields independent measures of P and S activity obtained from timefrequency analyses of respiratory activity and heart rate variability (ANX 3.0, ANSAR Medical Technologies, Inc., Philadelphia, PA). Within this cohort, patients with PE reported symptoms of sleep difficulties, poor peripheral circulation, general malaise, depression, frequent headache or migraines, gastrointestinal upset, and dizziness when standing. However, they demonstrated normal heart rate and blood pressure and no other apparent causes for their symptoms. The results of this study highlight the clinical effects of PE and indicate that, depending on patient history, carvedilol may be effective for patients with cardiovascular disease (CVD) and low-dose anticholinergics for patients without CVD. In cases where end-organ effects are not yet presented, patients may be weaned from therapy once PE is resolved.

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Exposure to noise during a football match

Occupational Safety – Science and Practice ◽

10.5604/01.3001.0012.0967 ◽

2018 ◽

Vol 561 (6) ◽

pp. 8-11

Author(s):

Bartłomiej Kukulski

Keyword(s):

Work Environment ◽

Frequency Analysis ◽

Sound Pressure Level ◽

Sound Pressure ◽

Pressure Level ◽

Legal Regulations ◽

Football Match ◽

Mass Events

This article presents the problem of legal regulations on noise at mass events. It also presents the results of noise measured during a football match. The study was carried out on October 22, 2017 in Kraków, during a match between Wisła Kraków and Legia Warszawa. Changes in sound pressure level values were recorded during the whole event. Then specific fragments were analyzed. Noise was measured at three points inside the stadium. Calculated values of the LCpeak, LAFmax and LAeq parameters were compared with permissible values in the work environment; a frequency analysis of selected match events was made.

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Contributions of Voice and Nonverbal Communication to Perceived Masculinity–Femininity for Cisgender and Transgender Communicators

Journal of Speech Language and Hearing Research ◽

10.1044/2019_jslhr-19-00387 ◽

2020 ◽

Vol 63 (4) ◽

pp. 931-947

Author(s):

Teresa L. D. Hardy ◽

Carol A. Boliek ◽

Daniel Aalto ◽

Justin Lewicke ◽

Kristopher Wells ◽

...

Keyword(s):

Fundamental Frequency ◽

Sound Pressure Level ◽

Sound Pressure ◽

Vocal Tract ◽

Presentation Mode ◽

Pressure Level ◽

Presentation Modes ◽

Audiovisual Stimuli ◽

Vocal Tract Resonance ◽

Point Light

Purpose The purpose of this study was twofold: (a) to identify a set of communication-based predictors (including both acoustic and gestural variables) of masculinity–femininity ratings and (b) to explore differences in ratings between audio and audiovisual presentation modes for transgender and cisgender communicators. Method The voices and gestures of a group of cisgender men and women ( n = 10 of each) and transgender women ( n = 20) communicators were recorded while they recounted the story of a cartoon using acoustic and motion capture recording systems. A total of 17 acoustic and gestural variables were measured from these recordings. A group of observers ( n = 20) rated each communicator's masculinity–femininity based on 30- to 45-s samples of the cartoon description presented in three modes: audio, visual, and audio visual. Visual and audiovisual stimuli contained point light displays standardized for size. Ratings were made using a direct magnitude estimation scale without modulus. Communication-based predictors of masculinity–femininity ratings were identified using multiple regression, and analysis of variance was used to determine the effect of presentation mode on perceptual ratings. Results Fundamental frequency, average vowel formant, and sound pressure level were identified as significant predictors of masculinity–femininity ratings for these communicators. Communicators were rated significantly more feminine in the audio than the audiovisual mode and unreliably in the visual-only mode. Conclusions Both study purposes were met. Results support continued emphasis on fundamental frequency and vocal tract resonance in voice and communication modification training with transgender individuals and provide evidence for the potential benefit of modifying sound pressure level, especially when a masculine presentation is desired.

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