Quantitative study of GABAergic and main cells in the hippocampus and piriform cortex of Krushinskii-Molodkina rats was performed 1 month after the incidence of seizure activity evoked by acoustic stimulation. The number of neurons significantly decreased in both regions and, particularly, in the hippocampus and central area of the piriform cortex.
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http://dx.doi.org/10.1007/s10517-008-0101-y | DOI Listing |
PLoS One
January 2025
Faculdade de Ciências Médicas, Universidade Estadual de Campinas (UNICAMP), Campinas, São Paulo, Brazil.
Background And Objective: One of the functions attributed to the auditory efferent system is related to the processing of acoustic stimuli in noise backgrounds. However, clinical implications and the neurophysiological mechanisms of this system are not yet understood, especially on higher regions of the central nervous system. Only a few researchers studied the effects of noise on cortical auditory evoked potentials (CAEP), but the lack of studies in this area and the contradictory results, especially in children, point to the need to investigate different protocols and parameters that could allow the study of top-down activity in humans.
View Article and Find Full Text PDFElife
January 2025
Cognitive Neuroscience Department, University of Bielefeld (DE), Bielefeld, Germany.
Audiovisual information reaches the brain via both sustained and transient input channels, representing signals' intensity over time or changes thereof, respectively. To date, it is unclear to what extent transient and sustained input channels contribute to the combined percept obtained through multisensory integration. Based on the results of two novel psychophysical experiments, here we demonstrate the importance of the transient (instead of the sustained) channel for the integration of audiovisual signals.
View Article and Find Full Text PDFJ Acoust Soc Am
January 2025
Dyson School of Design Engineering, Imperial College London, SW7 2DB London, United Kingdom.
To date, there is strong evidence indicating that humans with normal hearing can adapt to non-individual head-related transfer functions (HRTFs). However, less attention has been given to studying the generalization of this adaptation to untrained conditions. This study investigated how adaptation to one set of HRTFs can generalize to another set of HRTFs.
View Article and Find Full Text PDFWhile research on auditory attention in complex acoustical environment is a thriving field, experimental studies thus far have typically treated participants as passive listeners. The present study-which combined real-time covert loudness manipulations and online probe detection-investigates for the first time to our knowledge, the effects of acoustic salience on auditory attention during live interactions, using musical improvisation as an experimental paradigm. We found that musicians were more likely to pay attention to a given co-performer when this performer was made sounding louder or softer; that such salient effect was not owing to the local variations introduced by our manipulations but rather likely to be driven by the more long-term context; and that improvisers tended to be more strongly and more stably coupled when a musician was made more salient.
View Article and Find Full Text PDFJ Acoust Soc Am
January 2025
Applied Health Research (TGO), University Medical Center Groningen (UMCG), Groningen, the Netherlands.
Low frequency noise (LFN) of unknown origin can be disturbing, especially at night, and affect sleep and relaxation. If reduction of the LFN is impossible, adding sound can mask the troubling noise or detract attention from it to reduce distress. To assess the effectiveness of this, a survey was set up consisting of three questionnaires: the first when a person requested a masking sound and follow-ups after 1 and 3 months.
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