keyword
https://read.qxmd.com/read/38498092/l-type-calcium-channel-modulates-low-intensity-pulsed-ultrasound-induced-excitation-in-cultured-hippocampal-neurons
#1
JOURNAL ARTICLE
Wen-Yong Fan, Yi-Ming Chen, Yi-Fan Wang, Yu-Qi Wang, Jia-Qi Hu, Wen-Xu Tang, Yi Feng, Qian Cheng, Lei Xue
As a noninvasive technique, ultrasound stimulation is known to modulate neuronal activity both in vitro and in vivo. The latest explanation of this phenomenon is that the acoustic wave can activate the ion channels and further impact the electrophysiological properties of targeted neurons. However, the underlying mechanism of low-intensity pulsed ultrasound (LIPUS)-induced neuro-modulation effects is still unclear. Here, we characterize the excitatory effects of LIPUS on spontaneous activity and the intracellular Ca2+ homeostasis in cultured hippocampal neurons...
March 18, 2024: Neuroscience Bulletin
https://read.qxmd.com/read/38497455/human-observer-sensitivity-to-temporal-noise-during-b-mode-ultrasound-scanning-characterization-and-imaging-implications
#2
JOURNAL ARTICLE
Matthew T Huber, Katelyn M Flint, Patricia J McNally, Sarah C Ellestad, Gregg E Trahey
This work measures temporal signal-to-noise ratio (SNR) thresholds that indicate when random noise during ultrasound scanning becomes imperceptible to expert human observers. Visible noise compromises image quality and can potentially lead to non-diagnostic scans. Noise can arise from both stable acoustic sources (clutter) or randomly varying electronic sources (temporal noise). Extensive engineering effort has focused on decreasing noise in both of these categories. In this work, an observer study with five practicing sonographers was performed to assess sonographer sensitivity to temporal noise in ultrasound cine clips...
March 18, 2024: Ultrasonic Imaging
https://read.qxmd.com/read/38497435/the-effects-of-anthropogenic-noise-on-frogs-housed-on-exhibit-at-a-public-aquarium
#3
JOURNAL ARTICLE
Colette Angel, Michael Romano, Charles R Knapp
Anuran behavior and reproduction are dominated by vocalizations, rendering them vulnerable to the effects of signal masking. For anurans on display in zoos and aquaria, a major source of ambient noise is visitors, which pose a unique source of potential anthropogenic signal masking. Call characteristics (total call duration, and minimum and maximum call frequencies) of three populations of dendrobatids (Dendrobates leucomelas, Epipedobates tricolor, and Ranitomeya imitator) on public display were investigated at time periods of increasing visitor-related noise (closed, off-peak, and peak aquarium visiting hours) to determine if there were changes in call characteristics that correlated with changes in visitor noise levels...
March 18, 2024: Zoo Biology
https://read.qxmd.com/read/38497370/acoustic-outcomes-and-voice-related-quality-of-life-in-male-to-female-transsexuals-undergoing-wendler-glottoplasty-a-single-centre-experience
#4
JOURNAL ARTICLE
Maciej Misiołek, Marta Rogalska, Maciej Zieliński, Anna Kasperczuk, Anna Koniewska
INTRODUCTION: Many transsexual women seek to feminise their voice through pitch elevation surgeries so that it becomes congruent with their gender identity. This study aims to determine the safety and effectiveness of Wendler glottoplasty (WG) in vocal feminisation through the assessment of acoustic and aerodynamic parameters of the voice, as well as voice-related quality of life (QoL) in male-to-female transsexuals. MATERIAL AND METHODS: We retrospectively reviewed the medical records of transsexual women who underwent WG for voice feminisation at our institution between 2016 and 2023...
March 18, 2024: Endokrynologia Polska
https://read.qxmd.com/read/38496637/celsr3-drives-development-and-connectivity-of-the-acoustic-startle-hindbrain-circuit
#5
Joy H Meserve, Maria F Navarro, Elelbin A Ortiz, Michael Granato
UNLABELLED: In the developing brain, groups of neurons organize into functional circuits that direct diverse behaviors. One such behavior is the evolutionarily conserved acoustic startle response, which in zebrafish is mediated by a well-defined hindbrain circuit. While numerous molecular pathways that guide neurons to their synaptic partners have been identified, it is unclear if and to what extent distinct neuron populations in the startle circuit utilize shared molecular pathways to ensure coordinated development...
March 7, 2024: bioRxiv
https://read.qxmd.com/read/38496629/pkhd1l1-is-required-for-stereocilia-bundle-maintenance-prolonged-hearing-function-and-enhanced-resilience-to-noise-exposure
#6
Olga S Strelkova, Richard T Osgood, Chunjie J Tian, Xinyuan Zhang, Evan Hale, Pedro De-la-Torre, Daniel M Hathaway, Artur A Indzhykulian
Sensory hair cells of the cochlea are essential for hearing, relying on the mechanosensitive stereocilia bundle at their apical pole for their function. Polycystic Kidney and Hepatic Disease 1-Like 1 (PKHD1L1) is a stereocilia protein required for normal hearing in mice, and for the formation of the transient stereocilia surface coat, expressed during early postnatal development. While the function of the stereocilia coat remains unclear, growing evidence supports PKHD1L1 as a human deafness gene. In this study we carry out in depth characterization of PKHD1L1 expression in mice during development and adulthood, analyze hair-cell bundle morphology and hearing function in aging PKHD1L1-defficient mouse lines, and assess their susceptibility to noise damage...
March 4, 2024: bioRxiv
https://read.qxmd.com/read/38496073/physiotherapy-rehabilitation-following-acoustic-neuroma-resection-in-a-patient-with-cerebellopontine-angle-tumour-a-case-report
#7
Ishwin Kaur B Bagga, Subrat Samal
Acoustic neuroma excision in patients with cerebellopontine angle (CPA) tumours offers particular rehabilitation problems due to the complicated architecture of the cerebellum and brainstem tissues involved. CPA tumours (acoustic neuromas) are slow-growing tumours that arise from the vestibulocochlear nerve. Surgical excision of these tumours can cause neurological abnormalities that compromise motor coordination, balance, and facial nerve function. The case study emphasises the importance of a comprehensive physiotherapeutic approach in rehabilitating a patient following acoustic neuroma excision, with a focus on particular CPA tumour deficits...
February 2024: Curēus
https://read.qxmd.com/read/38495950/study-of-erythrocyte-sedimentation-in-human-blood-through-the-photoacoustic-signals-analysis
#8
JOURNAL ARTICLE
Argelia Pérez-Pacheco, Roberto G Ramírez-Chavarría, Marco Polo Colín-García, Flor Del Carmen Cortés-Ortegón, Rosa María Quispe-Siccha, Adolfo Martínez-Tovar, Irma Olarte-Carrillo, Luis Polo-Parada, Gerardo Gutiérrez-Juárez
INTRODUCTION: In this study, we utilized the pulsed photoacoustic (PA) technique to analyze globular sedimentation in whole human blood, with a focus on distinguishing between healthy individuals and those with hemolytic anemia. METHODS: Blood samples were collected from both healthy individuals (women and men) and those with hemolytic anemia, and temporal and spectral parameters of PA signals were employed for analysis. RESULTS: Significant differences (p < 0...
June 2024: Photoacoustics
https://read.qxmd.com/read/38495705/beyond-synthetic-aperture-focusing-deconvolution-based-elevation-resolution-enhancement-using-simulated-point-spread-function-for-linear-array-based-three-dimensional-photoacoustic-imaging
#9
JOURNAL ARTICLE
Yichuan Tang, Wojciech G Lesniak, Shang Gao, Yixuan Wu, Martin G Pomper, Haichong K Zhang
This paper introduces a deconvolution-based method to enhance the elevation resolution of a linear array-based three-dimensional (3D) photoacoustic (PA) imaging system. PA imaging combines the high contrast of optical imaging with the deep, multi-centimeter spatial resolution of ultrasound (US) imaging, providing structural and functional information about biological tissues. Linear array-based 3D PA imaging is easily accessible and applicable for ex vivo studies, small animal research, and clinical applications in humans...
March 1, 2024: Biomedical Optics Express
https://read.qxmd.com/read/38495470/a-toroidal-saw-gyroscope-with-focused-idts-for-sensitivity-enhancement
#10
JOURNAL ARTICLE
Lu Tian, Haitao Zhao, Qiang Shen, Honglong Chang
A surface acoustic wave (SAW) gyroscope measures the rate of rotational angular velocity by exploiting a phenomenon known as the SAW gyroscope effect. Such a gyroscope is a great candidate for application in harsh environments because of the simplification of the suspension vibration mechanism necessary for traditional microelectromechanical system (MEMS) gyroscopes. Here, for the first time, we propose a novel toroidal standing-wave-mode SAW gyroscope using focused interdigitated transducers (FIDTs). Unlike traditional SAW gyroscopes that use linear IDTs to generate surface acoustic waves, which cause beam deflection and result in energy dissipation, this study uses FIDTs to concentrate the SAW energy based on structural features, resulting in better focusing performance and increased SAW amplitude...
2024: Microsystems & Nanoengineering
https://read.qxmd.com/read/38494640/emigration-of-post-spawned-twaite-shad-alosa-fallax-an-anadromous-and-iteroparous-fish-in-a-highly-fragmented-river
#11
JOURNAL ARTICLE
Mark I A Yeldham, J Robert Britton, Charles Crundwell, Peter Davies, Jamie R Dodd, Andrew D Nunn, Randolph Velterop, Jonathan D Bolland
Anthropogenic barriers are widely known to negatively impact the spawning migrations of anadromous fishes, by delaying or preventing passage upstream. Although the impacts of barriers on emigrating post-spawned adults are less well studied, they could potentially impact the fitness and subsequent return rates of iteroparous species. In this study, passive acoustic telemetry was used to track the emigrations of 53 twaite shad Alosa fallax in the River Severn basin in their first spawning migration a year after being tagged, giving insights into their emigration movements and the impacts of anthropogenic weirs on these movements...
March 17, 2024: Journal of Fish Biology
https://read.qxmd.com/read/38493196/influence-of-saturation-level-on-the-acoustic-emission-characteristics-of-gas-hydrate-bearing-coal
#12
JOURNAL ARTICLE
Kang Yu, Yu Miao, Zhu Jinchao
To study the effects of gas hydrates on the prevention and control of coal and gas protrusions, this paper reports the results of acoustic emission experiments on coal bodies containing gas hydrates with different saturation levels. The results showed that few acoustic emission events were generated in the elasticity stages of coal bodies containing gas hydrates, and the first sudden increase in the number of ringing counts generally occurred before and after the yielding point. Additionally, the acoustic emission events in the yielding stage were more active, and the cumulative number of ringing counts increased faster...
March 16, 2024: Scientific Reports
https://read.qxmd.com/read/38493195/ultrasound-induced-reorientation-for-multi-angle-optical-coherence-tomography
#13
JOURNAL ARTICLE
Mia Kvåle Løvmo, Shiyu Deng, Simon Moser, Rainer Leitgeb, Wolfgang Drexler, Monika Ritsch-Marte
Organoid and spheroid technology provide valuable insights into developmental biology and oncology. Optical coherence tomography (OCT) is a label-free technique that has emerged as an excellent tool for monitoring the structure and function of these samples. However, mature organoids are often too opaque for OCT. Access to multi-angle views is highly desirable to overcome this limitation, preferably with non-contact sample handling. To fulfil these requirements, we present an ultrasound-induced reorientation method for multi-angle-OCT, which employs a 3D-printed acoustic trap inserted into an OCT imaging system, to levitate and reorient zebrafish larvae and tumor spheroids in a controlled and reproducible manner...
March 16, 2024: Nature Communications
https://read.qxmd.com/read/38493174/animal-borne-soundscape-logger-as-a-system-for-edge-classification-of-sound-sources-and-data-transmission-for-monitoring-near-real-time-underwater-soundscape
#14
JOURNAL ARTICLE
Takuji Noda, Takuya Koizumi, Naoto Yukitake, Daisuke Yamamoto, Tetsuro Nakaizumi, Kotaro Tanaka, Junichi Okuyama, Kotaro Ichikawa, Takeshi Hara
The underwater environment is filled with various sounds, with its soundscape composed of biological, geographical, and anthropological sounds. Our work focused on developing a novel method to observe and classify these sounds, enriching our understanding of the underwater ecosystem. We constructed a biologging system allowing near-real-time observation of underwater soundscapes. Utilizing deep-learning-based edge processing, this system classifies the sources of sounds, and upon the tagged animal surfacing, it transmits positional data, results of sound source classification, and sensor readings such as depth and temperature...
March 16, 2024: Scientific Reports
https://read.qxmd.com/read/38493018/effects-of-age-dependent-hormonal-changes-and-estrogen-supplementation-on-voice-in-girls-with-anorexia-nervosa-preliminary-report
#15
JOURNAL ARTICLE
Barbara Maciejewska, Zofia Maciejewska-Szaniec, Bogna Małaczyńska, Aleksandra Rajewska-Rager, Michał Michalak, Piotr Iwanowski
INTRODUCTION: Human development includes lots of physical and emotional changes. The human voice depends on age. Voice production is a complex physiological and acoustic phenomenon that depends on many factors such as structure, hormone level, degree of fatigue or nutrition and hydration of the body, systemic diseases, and emotional state. All these factors can be present in anorexia nervosa (AN), such as excessive weight loss, generated hydro-electrolytic changes, nutritional deficiencies, hormonal disturbances in the function of the hypothalamic-pituitary-adrenal axis, the hypothalamic-pituitary-thyroid axis, the hypothalamic-pituitary-ovarian axis, and emotional distress...
March 15, 2024: Journal of Voice
https://read.qxmd.com/read/38492834/bycatch-and-pollution-are-the-main-threats-for-burmeister-s-porpoises-inhabiting-a-high-industrialized-bay-in-the-humboldt-current-system
#16
JOURNAL ARTICLE
Ana M García-Cegarra, Anna Hall, Emma Martínez-López
Pollution and bycatch are two of the main threats for cetaceans worldwide. These threats are exacerbated for nearshore species particularly for those in regions with intense industrial and fishing activities. Burmeister's porpoise is endemic to South America, has a Near Threatened conservation status because of long-term mortality in fisheries. Burmeister's porpoise occur in Mejillones Bay, northern Chile, a hot spot for heavy metals pollution from the mining industry and an intense industrial and artisanal purse-seine fishing area...
March 14, 2024: Environmental Research
https://read.qxmd.com/read/38492568/sound-elicits-stereotyped-facial-movements-that-provide-a-sensitive-index-of-hearing-abilities-in-mice
#17
JOURNAL ARTICLE
Kameron K Clayton, Kamryn S Stecyk, Anna A Guo, Anna R Chambers, Ke Chen, Kenneth E Hancock, Daniel B Polley
Sound elicits rapid movements of muscles in the face, ears, and eyes that protect the body from injury and trigger brain-wide internal state changes. Here, we performed quantitative facial videography from mice resting atop a piezoelectric force plate and observed that broadband sounds elicited rapid and stereotyped facial twitches. Facial motion energy (FME) adjacent to the whisker array was 30 dB more sensitive than the acoustic startle reflex and offered greater inter-trial and inter-animal reliability than sound-evoked pupil dilations or movement of other facial and body regions...
March 6, 2024: Current Biology: CB
https://read.qxmd.com/read/38492352/damage-recovery-in-composite-laminates-through-deep-learning-from-acoustic-scattering-of-guided-waves
#18
JOURNAL ARTICLE
Bernardo Feijó Junqueira, Ricardo Leiderman, Daniel Alves Castello
We propose an innovative deep learning (DL) regression strategy combined with guided wave modes to address inverse acoustic scattering problems effectively. This approach allows for accurate recovery of heterogeneous defect fields at the interfaces of composite laminates. The neural network (NN) model's training process employs stochastic Gaussian fields as output, which are linked to the interfacial defect fields of the physical problem. Our method assumes prior knowledge of the material geometrical properties of the constituent layers...
March 15, 2024: Ultrasonics
https://read.qxmd.com/read/38492351/a-single-crystal-row-column-array-for-3d-ultrasound-imaging
#19
JOURNAL ARTICLE
Guo Li, Qiandong Sun, Yapeng Fu, Shilin Hou, Jiaming Zhang, K L Xu, J Y Dai
In vivo 3D ultrasound imaging with 2D-array transducers is of great importance for both clinical application and biomedical research, but it is complicated in fabrication and also very expensive in hardware due to thousands of electronic channels. In this work, we demonstrate a new fabrication process of 7-MHz 128 + 128 elements row-column-array (RCA) transducer with relaxor ferroelectric PMN-0.28PT single crystal. With piezoelectric single crystal and improved acoustic matching, the optimized performance of -6 dB bandwidth of ∼82 % and insertion loss of -44...
March 11, 2024: Ultrasonics
https://read.qxmd.com/read/38492307/the-variations-of-osseous-structure-of-the-%C3%A4-nternal-acoustic-canal-an-anatomical-study
#20
JOURNAL ARTICLE
Elif Sarı, Gkionoul Nteli Chatzioglou, Dastan Temirbekov, Aynur Aliyeva, Adnan Öztürk, Ilke Ali Gürses
OBJECTIVES: The internal acoustic meatus is an osseous canal that connects the inner ear to the posterior cranial fossa. It is located in the petrous portion of the temporal bone. A thin cribriform osseous plate known as the fundus is situated at the lateral end of the canal. This study assesses the structural and numerical variations of the fundus formations. METHODS: Fifty-four temporal bones of unknown gender and age were examined with the surgical microscope...
March 5, 2024: Brazilian Journal of Otorhinolaryngology
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