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1,564 Results Found

  • Article
  • Open Access
1,984 Views
18 Pages

21 August 2024

Image inpainting aims to restore the damaged information in images, enhancing their readability and usability. Ancient paintings, as a vital component of traditional art, convey profound cultural and artistic value, yet often suffer from various form...

  • Article
  • Open Access
904 Views
20 Pages

28 September 2025

Cracks are vital warning signs to reflect the structural deterioration in concrete constructions and buildings. However, their diverse and complex morphologies make accurate segmentation challenging. Deep learning-based methods effectively alleviate...

  • Article
  • Open Access
7 Citations
7,230 Views
18 Pages

The Effect of Low Frequency Sound on Heart Rate Variability and Subjective Perception: A Randomized Crossover Study

  • Zdeněk Vilímek,
  • Jiří Kantor,
  • Jakub Krejčí,
  • Zbyněk Janečka,
  • Zuzana Jedličková,
  • Anna Nekardová,
  • Michal Botek,
  • Monika Bucharová and
  • Elsa A. Campbell

Background: Vibroacoustic therapy (VAT) uses low-frequency sound, often combined with listening to music, for therapeutic purposes. However, the impact of low-frequency vibration (LFV) on physiological functions and subjective perception is relativel...

  • Article
  • Open Access
5 Citations
1,704 Views
19 Pages

13 January 2025

Road extraction in remote sensing images is crucial for urban planning, traffic navigation, and mapping. However, certain lighting conditions and compositional materials often cause roads to exhibit colors and textures similar to the background, lead...

  • Article
  • Open Access
2 Citations
2,844 Views
21 Pages

The Relevance of the Low-Frequency Sound Insulation of Window Elements of Façades on the Perception of Urban-Type Sounds

  • Daniel de la Prida,
  • María Ángeles Navacerrada,
  • María Aguado-Yáñez,
  • Luis Antonio Azpicueta-Ruiz,
  • Antonio Pedrero and
  • David Caballol

10 October 2023

The sound insulation of the façade and its elements is a very important characteristic, as it largely determines the degree of sound protection of the building’s interior from external noise sources. This feature, therefore, has a great...

  • Opinion
  • Open Access
13 Citations
5,852 Views
25 Pages

The Brain’s Asymmetric Frequency Tuning: Asymmetric Behavior Originates from Asymmetric Perception

  • Arianna Felisatti,
  • David Aagten-Murphy,
  • Jochen Laubrock,
  • Samuel Shaki and
  • Martin H. Fischer

15 December 2020

To construct a coherent multi-modal percept, vertebrate brains extract low-level features (such as spatial and temporal frequencies) from incoming sensory signals. However, because frequency processing is lateralized with the right hemisphere favouri...

  • Article
  • Open Access
2,515 Views
24 Pages

26 November 2021

The traditional signal of opportunity (SOP) positioning system is equipped with dedicated receivers for each type of signal to ensure continuous signal perception. However, it causes a low equipment resources utilization and energy waste. With increa...

  • Article
  • Open Access
3 Citations
2,593 Views
22 Pages

Real-Time Implementation of a Frequency Shifter for Enhancement of Heart Sounds Perception on VLIW DSP Platform

  • Vincenzo Muto,
  • Emilio Andreozzi,
  • Carmela Cappelli,
  • Jessica Centracchio,
  • Gennaro Di Meo,
  • Daniele Esposito,
  • Paolo Bifulco and
  • Davide De Caro

20 October 2023

Auscultation of heart sounds is important to perform cardiovascular assessment. External noises may limit heart sound perception. In addition, heart sound bandwidth is concentrated at very low frequencies, where the human ear has poor sensitivity. Th...

  • Article
  • Open Access
17 Citations
6,339 Views
19 Pages

26 April 2023

This study aimed to determine whether and how three demographic factors—age group, gender, and consumption frequency—affect texture perception and liking of two staple foods—cooked rice and wheat bread. In total, 346 adults evaluate...

  • Article
  • Open Access
1 Citations
1,243 Views
20 Pages

31 December 2024

A fast frequency control (FFC) strategy using the proximal policy optimization based on worst-case network attack perception (worst-case PPO) algorithm is proposed to address the complexity of fast frequency control in power systems and the risks pos...

  • Article
  • Open Access
13 Citations
3,706 Views
13 Pages

Low and High Frequency Vibration Perception Thresholds Can Improve the Diagnosis of Diabetic Neuropathy

  • Tina J. Drechsel,
  • Renan L. Monteiro,
  • Claudio Zippenfennig,
  • Jane S. S. P. Ferreira,
  • Thomas L. Milani and
  • Isabel C. N. Sacco

12 July 2021

Recent studies demonstrate neuropathic changes with respect to vibration sensitivity for different measurement frequencies. This study investigates the relationship between vibration perception thresholds (VPTs) at low and high frequencies at two pla...

  • Article
  • Open Access
10 Citations
4,564 Views
10 Pages

8 November 2019

Weight loss practices and frequency among children and adolescents can impact overall diet quality. We used cross-sectional U.S. National Health and Nutrition Examination Survey data (NHANES) 2011–2012 from 1303 children and adolescents (8&ndas...

  • Article
  • Open Access
7 Citations
4,884 Views
14 Pages

20 October 2020

Masking occurs when the perception of a stimulus is affected or covered by the presence of another signal in close proximity either in time or frequency. This study investigated frequency masking effects across a wide frequency range for whole-body v...

  • Article
  • Open Access
7 Citations
2,262 Views
23 Pages

1 August 2024

The accurate extraction and monitoring of offshore aquaculture areas are crucial for the marine economy, environmental management, and sustainable development. Existing methods relying on unimodal remote sensing images are limited by natural conditio...

  • Article
  • Open Access
18 Citations
6,975 Views
15 Pages

Exposure Knowledge and Perception of Wireless Communication Technologies

  • Frederik Freudenstein,
  • Luis M. Correia,
  • Carla Oliveira,
  • Daniel Sebastião and
  • Peter M. Wiedemann

The presented survey investigates risk and exposure perceptions of radio frequency electromagnetic fields (RF EMF) associated with base stations, mobile phones and other sources, the key issue being the interaction between both sets of perceptions....

  • Article
  • Open Access
19 Citations
4,356 Views
25 Pages

Research on Street Color Environment Perception Based on CEP-KASS Framework

  • Kuntao Hu,
  • Ziqi Xu,
  • Xiufang Wang,
  • Yingyu Wang,
  • Haoran Li and
  • Yibing Zhang

20 October 2023

The color of urban streets plays a crucial role in shaping a city’s image, enhancing street appeal, and optimizing the experience of citizens. Nevertheless, the relationship between street color environment and residents’ perceptions has...

  • Article
  • Open Access
1 Views
5 Pages

The aim of the present study was to compare the benefit of monaural versus binaural ear-level frequency modulated (FM) fitting on speech perception in noise in children with normal hearing. Reception threshold for sentences (RTS) was measured in no-F...

  • Article
  • Open Access
3 Citations
3,106 Views
12 Pages

Arduino microcontrollers are used for a wide range of technological and biomedical applications, such as image classification, computer vision, brain–computer interaction and vision experiments. Here, we present a new cost-effective mini-device...

  • Article
  • Open Access
9 Citations
11,467 Views
18 Pages

22 April 2016

High quality headphones can generate a realistic sound immersion reproducing binaural recordings. However, most people commonly use consumer headphones of inferior quality, as the ones provided with smartphones or music players. Factors, such as weak...

  • Article
  • Open Access
11 Citations
1,039 Views
8 Pages

Past work has shown relationship between the ability to discriminate spectral patterns and measures of speech intelligibility. The purpose of this study was to investigate the ability of both children and young adults to discriminate static and dynam...

  • Article
  • Open Access
2 Citations
2,469 Views
19 Pages

17 May 2023

This paper uses nonparametric causality-in-quantiles tests to examine the asymmetric effects of climate risk perception (CRP) on the thermal and coking coal futures high-frequency returns and volatilities. The results show that CRP significantly impa...

  • Article
  • Open Access
4 Citations
3,207 Views
11 Pages

7 January 2023

Schizophrenia is a mental disorder characterized by both abnormal time perception and atypical relationships with external factors. Here we compare the influence of external photic stimulation on time production between healthy subjects (n = 24) and...

  • Article
  • Open Access
17 Citations
12,400 Views
18 Pages

The Effect of Music Tempo on Fatigue Perception at Different Exercise Intensities

  • Jianfeng Wu,
  • Lingyan Zhang,
  • Hongchun Yang,
  • Chunfu Lu,
  • Lu Jiang and
  • Yuyun Chen

Background: This study aimed to clarify the effect of music tempo on runners’ perception of fatigue at different exercise intensities and while listening to music of different tempos through running experiments. Methods: This study used a withi...

  • Article
  • Open Access
8 Citations
6,285 Views
28 Pages

Low-Frequency Noise: Experiences from a Low-Frequency Noise Perceiving Population

  • Kristina H. Erdélyi,
  • Anselm B. M. Fuermaier,
  • Lara Tucha,
  • Oliver Tucha and
  • Janneke Koerts

Although low-frequency noise (LFN) is associated with various complaints, there is still much unknown about this phenomenon. This research aims to provide an extensive description of (1) LFN perceptions, (2) LFN-related complaints, and (3) the charac...

  • Article
  • Open Access
2 Citations
2,248 Views
19 Pages

12 June 2025

Nighttime object detection poses significant challenges due to low illumination, noise, and reduced contrast, which can severely impact the performance of standard detection models. In this paper, we present NF-DETR (Night-Frequency Detection Transfo...

  • Feature Paper
  • Article
  • Open Access
9 Citations
4,917 Views
14 Pages

14 June 2018

Recent studies have shown that limiting the lifetime of pattern elements improves symmetry detection, potentially by increasing the number of element locations. Here, we investigate how spatial relocation, luminance contrast modulation and lifetime d...

  • Article
  • Open Access
424 Views
19 Pages

High-fidelity 3D face reconstruction from a single image is challenging, owing to the inherently ambiguous depth cues and the strong entanglement of multi-scale facial textures. In this regard, we propose a hierarchical multi-resolution self-supervis...

  • Article
  • Open Access
28 Citations
7,350 Views
16 Pages

26 May 2020

The early visual system is composed of spatial frequency-tuned channels that break an image into its individual frequency components. Therefore, researchers commonly filter images for spatial frequencies to arrive at conclusions about the differentia...

  • Article
  • Open Access
75 Citations
5,777 Views
16 Pages

29 October 2017

The interrupted sampling repeater jamming (ISRJ) based on a digital radio frequency memory (DRFM) device is a new type of coherent jamming. This kind of jamming usually occurs as main-lobe jamming and has the advantages of low power requirements and...

  • Article
  • Open Access
4 Citations
2,646 Views
19 Pages

Unraveling Spatial-Spectral Dynamics of Speech Categorization Speed Using Convolutional Neural Networks

  • Kazi Ashraf Moinuddin,
  • Felix Havugimana,
  • Rakib Al-Fahad,
  • Gavin M. Bidelman and
  • Mohammed Yeasin

30 December 2022

The process of categorizing sounds into distinct phonetic categories is known as categorical perception (CP). Response times (RTs) provide a measure of perceptual difficulty during labeling decisions (i.e., categorization). The RT is quasi-stochastic...

  • Article
  • Open Access
4 Citations
2,649 Views
15 Pages

The Impact of Spatial Frequency on the Perception of Crowd Emotion: An fMRI Study

  • Dongfang Zhao,
  • Xiangnan Shen,
  • Shuaixia Li and
  • Weiqi He

9 December 2023

Recognizing the emotions of faces in a crowd is crucial for understanding overall behavior and intention as well as for smooth and friendly social interactions. However, it is unclear whether the spatial frequency of faces affects the discrimination...

  • Article
  • Open Access
14 Citations
5,939 Views
23 Pages

25 October 2020

Background: Meal habits are associated with overall dietary quality and favorable dietary patterns determined by the Healthy Eating Index (HEI). However, within dietary patterns, complexities of food combinations that are not apparent through composi...

  • Article
  • Open Access
255 Views
23 Pages

HD-BSNet: A Plug-and-Play Dual-Mechanism Synergistic Enhancement Framework for Small Object Detection

  • Jianwei Wen,
  • Xiangyue Zheng,
  • Nian Pan,
  • Dan Jia,
  • Haiying Wu,
  • Tao Chen and
  • Jin Zhou

28 January 2026

In remote sensing and low-altitude unmanned aerial vehicle(UAV) detection scenarios, small target detection is extremely challenging due to the low pixel proportion, sparse features, and complex backgrounds of targets. The reliability of low-altitude...

  • Article
  • Open Access
12 Citations
8,551 Views
23 Pages

Spatio-Temporal Saliency Perception via Hypercomplex Frequency Spectral Contrast

  • Ce Li,
  • Jianru Xue,
  • Nanning Zheng,
  • Xuguang Lan and
  • Zhiqiang Tian

12 March 2013

Salient object perception is the process of sensing the salient information from the spatio-temporal visual scenes, which is a rapid pre-attention mechanism for the target location in a visual smart sensor. In recent decades, many successful models o...

  • Article
  • Open Access
13 Citations
6,478 Views
18 Pages

Social media data contains real-time expressed information, including text and geographical location. As a new data source for crowd behavior research in the era of big data, it can reflect some aspects of the behavior of residents. In this study, a...

  • Article
  • Open Access
8 Citations
5,179 Views
16 Pages

3 June 2020

Minor differences in the vibration characteristics of a vehicle may greatly influence the comfort experienced by the driver. Therefore, such characteristics are significant in the process of vehicle development. In this experimental study, just-notic...

  • Article
  • Open Access
19 Citations
5,223 Views
12 Pages

The Frequency of Use and Harm Perception of Heated Tobacco Products (HTPs): The 2019 Cross-Sectional Survey among Medical Students from Poland

  • Paulina Majek,
  • Mateusz Jankowski,
  • Bartłomiej Nowak,
  • Maksymilian Macherski,
  • Maciej Nowak,
  • Aleksandra Gil,
  • Piotr Nakiela,
  • Barbara Lewicka,
  • Joshua Allan Lawson and
  • Grzegorz Marek Brożek
  • + 1 author

Heated tobacco products (HTPs) are devices for generating a nicotine aerosol by heating the tobacco sticks. This study aimed to assess (1) the prevalence of HTP and tobacco cigarette usage among medical students, (2) to characterize smoking habits an...

  • Article
  • Open Access
4 Citations
5,945 Views
31 Pages

Subjective Complaints and Coping Strategies of Individuals with Reported Low-Frequency Noise Perceptions

  • Kristina H. Erdelyi,
  • Anselm B. M. Fuermaier,
  • Lara Tucha,
  • Oliver Tucha and
  • Janneke Koerts

6 February 2024

Background: Subjective everyday hindrances associated with low-frequency noise (LFN) can be high; however, there is still a lot unknown about experienced complaints. This study aims to investigate (1) subjective complaints and (2) coping strategies o...

  • Article
  • Open Access
5 Citations
4,944 Views
16 Pages

Auditory discrimination, the hearing ability crucial for speech and language development, allowing one to perceive changes in volume, duration and frequency of sounds, was assessed for 366 participants with normal peripheral hearing: 220 participants...

  • Article
  • Open Access
26 Citations
4,137 Views
14 Pages

8 July 2023

Fitting cochlear implant (CI) users can be challenging. Anatomy-based fitting (ABF) maps may have the potential to lead to better objective and subjective outcomes than conventional clinically based fitting (CBF) methods. ABF maps were created via in...

  • Article
  • Open Access
3 Citations
2,777 Views
16 Pages

Electrophysiological Correlates of Vocal Emotional Processing in Musicians and Non-Musicians

  • Christine Nussbaum,
  • Annett Schirmer and
  • Stefan R. Schweinberger

7 November 2023

Musicians outperform non-musicians in vocal emotion recognition, but the underlying mechanisms are still debated. Behavioral measures highlight the importance of auditory sensitivity towards emotional voice cues. However, it remains unclear whether a...

  • Article
  • Open Access
44 Citations
5,619 Views
14 Pages

20 September 2021

The adoption of sustainable dietary models, such as the Mediterranean Diet (MD), can be a valuable strategy to preserve ecosystems and human health. This study aims to investigate in an Italian adult representative sample the adherence to the MD and...

  • Feature Paper
  • Review
  • Open Access
4 Citations
4,284 Views
10 Pages

Perception Mechanism of Bone-Conducted Ultrasound and Its Clinical Use

  • Tadashi Nishimura,
  • Tadao Okayasu,
  • Akinori Yamashita,
  • Hiroshi Hosoi and
  • Tadashi Kitahara

It is generally believed that ultrasound cannot be heard. However, ultrasound is audible when it is presented through bone conduction. Bone-conducted ultrasound (BCU) has unique characteristics; the most interesting is its perception in patients with...

  • Article
  • Open Access
2 Citations
4,889 Views
15 Pages

Peripheral Flicker Fusion at High Luminance: Beyond the Ferry–Porter Law

  • Maydel Fernandez-Alonso,
  • Will Innes and
  • Jenny C. A. Read

20 March 2023

The relationship between luminous intensity and the maximum frequency of flicker that can be detected defines the limits of the temporal-resolving ability of the human visual system, and characterizing it has important theoretical and practical appli...

  • Article
  • Open Access
3,089 Views
15 Pages

Spatial Frequency Tuning of Body Inversion Effects

  • Giulia D’Argenio,
  • Alessandra Finisguerra and
  • Cosimo Urgesi

23 January 2023

Body inversion effects (BIEs) reflect the deployment of the configural processing of body stimuli. BIE modulates the activity of body-selective areas within both the dorsal and the ventral streams, which are tuned to low (LSF) or high spatial frequen...

  • Article
  • Open Access
3 Citations
2,349 Views
15 Pages

Vocal Emotion Perception and Musicality—Insights from EEG Decoding

  • Johannes M. Lehnen,
  • Stefan R. Schweinberger and
  • Christine Nussbaum

8 March 2025

Musicians have an advantage in recognizing vocal emotions compared to non-musicians, a performance advantage often attributed to enhanced early auditory sensitivity to pitch. Yet a previous ERP study only detected group differences from 500 ms onward...

  • Article
  • Open Access
151 Views
28 Pages

10 February 2026

In adverse weather and rapidly changing scenes, fog severely reduces image contrast and obscures target textures, causing small-object detection to suffer from feature weakening and background interference. Many existing detectors, meanwhile, rely on...

  • Article
  • Open Access
9 Citations
7,061 Views
18 Pages

Consumer Perceptions of Artificial Sweeteners in Food Products, Consumption Frequency, and Body Mass Index: A Multivariate Analysis

  • Branka Jurcevic Zidar,
  • Zlatka Knezovic,
  • Ajka Pribisalic,
  • Sanja Luetic,
  • Katarina Jurcic,
  • Nina Knezovic and
  • Davorka Sutlovic

27 February 2025

Background/Objectives: Artificial sweeteners are commonly used food additives that provide sweetness without calories. Once considered harmless due to their lack of metabolism, recent studies suggest that they may have unintended effects, potentially...

  • Article
  • Open Access
3 Citations
2,279 Views
12 Pages

27 November 2022

Auditory analysis is an essential method that is used to recognize voice identity in court investigations. However, noise will interfere with auditory perception. Based on this, we selected white noise, pink noise, and speech noise in order to design...

  • Article
  • Open Access
27 Citations
7,500 Views
13 Pages

RF EMF Risk Perception Revisited: Is the Focus on Concern Sufficient for Risk Perception Studies?

  • Peter M. Wiedemann,
  • Frederik Freudenstein,
  • Christoph Böhmert,
  • Joe Wiart and
  • Rodney J. Croft

An implicit assumption of risk perception studies is that concerns expressed in questionnaires reflect concerns in everyday life. The aim of the present study is to check this assumption, i.e., the extrapolability of risk perceptions expressed in a s...

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