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Comparison of Performance for Cochlear-Implant Listeners Using Audio Processing Strategies Based on Short-Time Fast Fourier Transform or Spectral Feature Extraction.
Ear Hear
December 2024
Laboratorio de Audición Computacional y Piscoacústica, Instituto de Neurociencias de Castilla y León, Universidad de Salamanca, Salamanca, Spain.
Objectives: We compared sound quality and performance for a conventional cochlear-implant (CI) audio processing strategy based on short-time fast-Fourier transform (Crystalis) and an experimental strategy based on spectral feature extraction (SFE). In the latter, the more salient spectral features (acoustic events) were extracted and mapped into the CI stimulation electrodes. We hypothesized that (1) SFE would be superior to Crystalis because it can encode acoustic spectral features without the constraints imposed by the short-time fast-Fourier transform bin width, and (2) the potential benefit of SFE would be greater for CI users who have less neural cross-channel interactions.
View Article and Find Full Text PDFContinuous Quasi-Attractors dissolve with too much - or too little - variability.
PNAS Nexus
December 2024
SISSA, Scuola Internazionale Superiore di Studi Avanzati, Cognitive Neuroscience, Trieste 34136, Italy.
Recent research involving bats flying in long tunnels has confirmed that hippocampal place cells can be active at multiple locations, with considerable variability in place field size and peak rate. With self-organizing recurrent networks, variability implies inhomogeneity in the synaptic weights, impeding the establishment of a continuous manifold of fixed points. Are continuous attractor neural networks still valid models for understanding spatial memory in the hippocampus, given such variability? Here, we ask what are the noise limits, in terms of an experimentally inspired parametrization of the irregularity of a single map, beyond which the notion of continuous attractor is no longer relevant.
View Article and Find Full Text PDFUnmasking the impact of COVID-19 on the mental health of college students: a cross-sectional study.
Front Psychiatry
November 2024
Department of Medical Lab Sciences, Public Health, and Nutrition Science, Tarleton State University, Stephenville, TX, United States.
Introduction: Safeguarding college students' mental health and well-being poses a challenge for college administrators and clinicians because of the unique circumstances students face and the limited literature on their needs. Prior to the pandemic, depression and anxiety were already on the rise among college students, but the changes associated with it may have exacerbated these issues. Our study aimed to explore factors influencing college students' mental health and identify common trends in their experiences that could assist organizations and policymakers in the future.
View Article and Find Full Text PDFThe relationships between cochlear nerve health and AzBio sentence scores in quiet and noise in postlingually deafened adult cochlear implant users.
medRxiv
November 2024
Department of Otolaryngology - Head and Neck Surgery, The Ohio State University, Columbus, OH 43212.
Objectives: This study investigated the relationships between the cochlear nerve (CN) health and sentence-level speech perception outcomes measured in quiet and noise in postlingually deafened adult cochlear implant (CI) users.
Design: Study participants included 24 postlingually deafened adult CI users with a Cochlear Nucleus device. For each participant, only one ear was tested.
The role of waddling gait in balance control during pregnancy.
Gait Posture
February 2025
Washington State University, Smith Gym room 113F, Pullman, WA 99164-1410, USA. Electronic address:
Background: Pregnant people experience many physical changes which might affect their walking pattern. Waddling gait is a common gait pattern pregnant individuals adopt. It is unknown whether waddling gait is a sign of poor balance or a protective mechanism against loss of balance, so the aim of this study was to understand why some pregnant individuals adopt this gait pattern.
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