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Overexpression of under the Promoter, Leads to Impaired Sound Processing and Increased Inhibition in the Inferior Colliculus.
Int J Mol Sci
April 2021
Institute of Experimental Medicine CAS, Vídenska 1083, 14220 Prague, Czech Republic.
The LIM homeodomain transcription factor ISL1 is essential for the different aspects of neuronal development and maintenance. In order to study the role of ISL1 in the auditory system, we generated a transgenic mouse () expressing under the promoter control. We previously reported a progressive age-related decline in hearing and abnormalities in the inner ear, medial olivocochlear system, and auditory midbrain of these mice.
View Article and Find Full Text PDFSpatial Separation between Two Sounds of an Oddball Paradigm Affects Responses of Neurons in the Rat's Inferior Colliculus to the Sounds.
Neuroscience
September 2020
Department of Biomedical Sciences, University of Windsor, Windsor, Ontario N9B 3P4, Canada. Electronic address:
The ability to sense occasionally occurring sounds in an environment is critical for animals. To understand this ability, we studied responses to acoustic oddball paradigms in the rat's midbrain auditory neurons. An oddball paradigm is a random sequence of stimuli created using two tone bursts, with one presented at a high probability (standard stimulus) and the other at a low probability (oddball stimulus).
View Article and Find Full Text PDFResponses of neurons in the rat's inferior colliculus to a sound are affected by another sound in a space-dependent manner.
Sci Rep
September 2019
Department of Biomedical Sciences, University of Windsor, Windsor, Ontario, N9B 3P4, Canada.
The perception of a sound can be influenced by another sound in a space-dependent manner. An understanding of this perceptual phenomenon depends on knowledge about how the spatial relationship between two sounds affects neural responses to the sounds. We used the rat as a model system and equal-probability two-tone sequences as stimuli to evaluate how spatial separation between two asynchronously recurring sounds affected responses to the sounds in midbrain auditory neurons.
View Article and Find Full Text PDFThe "two-tone" testis.
Abdom Radiol (NY)
February 2019
Department of Radiology, Wake Forest Baptist Medical Center, Wake Forest University School of Medicine, Medical Center Blvd, Winston-Salem, NC, 27157, USA.
Neural sensitivity to novel sounds in the rat's dorsal cortex of the inferior colliculus as revealed by evoked local field potentials.
Hear Res
April 2012
Department of Biological Sciences, 401 Sunset Ave., University of Windsor, Windsor, Ontario, Canada N9B 3P4.
Evoked local field potentials in response to contralaterally presented tone bursts were recorded from the rat's dorsal cortex of the inferior colliculus (ICd). An oddball stimulus paradigm was used to study the sensitivity of ensembles of neurons in the ICd to novel sounds. Our recordings indicate that neuron ensembles in the ICd display stimulus-specific adaptation when a large contrast in both frequency and probability of occurrence exists between the two tone bursts used for generating an oddball paradigm.
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