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Effects of stimuli and contralateral noise levels on auditory cortical potentials recorded in school-age children.
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 PDFSpontaneous blinking and brain health in aging: Large-scale evaluation of blink-related oscillations across the lifespan.
Front Aging Neurosci
January 2025
Department of Biomedical Engineering and Science, Florida Institute of Technology, Melbourne, FL, United States.
Blink-related oscillations (BROs) are newly discovered neurophysiological brainwave responses associated with spontaneous blinking, and represent environmental monitoring and awareness processes as the brain evaluates new visual information appearing after eye re-opening. BRO responses have been demonstrated in healthy young adults across multiple task states and are modulated by both task and environmental factors, but little is known about this phenomenon in aging. To address this, we undertook the first large-scale evaluation of BRO responses in healthy aging using the Cambridge Centre for Aging and Neuroscience (Cam-CAN) repository, which contains magnetoencephalography (MEG) data from a large sample ( = 457) of healthy adults across a broad age range (18-88) during the performance of a simple target detection task.
View Article and Find Full Text PDFCognitive component of auditory attention to natural speech events.
Front Hum Neurosci
January 2025
Center for Ear-EEG, Department of Electrical and Computer Engineering, Aarhus University, Aarhus, Denmark.
The recent progress in auditory attention decoding (AAD) methods is based on algorithms that find a relation between the audio envelope and the neurophysiological response. The most popular approach is based on the reconstruction of the audio envelope from electroencephalogram (EEG) signals. These methods are primarily based on the exogenous response driven by the physical characteristics of the stimuli.
View Article and Find Full Text PDFUnlabelled: Predictive coding (PC) hypothesizes that the brain computes internal models of predicted events and that unpredicted stimuli are signaled with prediction errors that feed forward. We tested this hypothesis using a visual oddball task. A repetitive sequence interrupted by a novel stimulus is a "local" oddball.
View Article and Find Full Text PDFIntegrating behavioral and neurophysiological insights: High trait anxiety enhances observational fear learning.
Neuroimage
January 2025
Institute for Brain and Psychological Sciences, Sichuan Normal University, Chengdu 610066, China. Electronic address:
Observational fear learning delineates the process by which individuals learn about potential threats through observing others' reactions. Prior research indicates that individuals with high trait anxiety (HTA) manifest pronounced fear responses in direct fear learning scenarios. However, the specific influence of trait anxiety on observational fear learning remains insufficiently explored.
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