Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 15 of 15 for “"Cochlear Nucleus"”.
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Responses from electric stimulation of cochlear nucleus
Cochlear nucleus (CN), the exclusive destination of the auditory nerve, is the gateway for all central processing of auditory information. The CN comprises three major subdivisions: anteroventral, posteroventral and dorsal (AVCN, PVCN and DCN, respectively), each of which contains anatomically and …
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Dorsal Cochlear Nucleus Output Neurons in Young and Aged Rats
… understanding of age-related changes in dorsal cochlear nucleus (DCN) physiology. DCN was chosen because it receives direct input from the auditory nerve and much is known about its neuronal morphology, physiology and circuitry. In young animals, DCN output neurons, fusiform cells, receive …
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Coincidence detection in the cochlear nucleus : implications for the coding of pitch
… cues may be extracted by central neurons in the cochlear nucleus (CN) that receive inputs from AN fibers innervating different cochlear regions and are sensitive to their relative timing. One possible mechanism for this extraction is cross-frequency coincidence detection (CD), in which a central …
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Electrical responses of neural units in the anteroventral cochlear nucleus of the cat.
Thesis. 1976. Ph.D.--Massachusetts Institute of Technology. Dept. of Electrical Engineering and Computer Science.
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Spatio-temporal representation of the pitch of complex tones in the auditory nerve and cochlear nucleus
… to evaluate whether these cues are extracted in cochlear nucleus (CN) neurons, which receive inputs from AN fibers. We used transient complex stimuli ("Huffman sequences") designed to manipulate the relative timing between adjacent AN fibers to evaluate sensitivity of CN units to the …
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PLASTIC CHANGES IN THE INHIBITORY GLYCINE SYSTEM OF THE DORSAL COCHLEAR NUCLEUS (DCN) IN A RAT MODEL OF TINNITUS
… and its receptor TrkB were assessed in dorsal cochlear nucleus (DCN) fusiform cells 4 months post exposure utilizing quantitative in situ hybridization and immunocytochemistry. Young exposed rats showed significant decreases of GlyR &alpha<sub>1</sub> protein at middle and high frequency …
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Neural models of modulation frequency analysis in the auditory system
… for the simulation of the response properties of cochlear nucleus ideal onset units, a neuron type that is known to encode the modulation frequency of AM stimuli by its distinct temporal responses. The second model component consists of a neural circuit that transforms temporal AM information, …
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Tone-evoked Fos labeling in the central auditory pathway : effects of stimulus intensity and auditory fear conditioning
… coding in the central auditory pathway from the cochlear nucleus to the auditory cortex. The Fos labeling method was used to assess neuronal activation in the central auditory system. This technique allows one to study large regions of the brain in awake animals. Increasing sound pressure level …
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Effects of cardiac gating on fMRI of the human auditory system
… at all levels of the auditory pathway from the cochlear nucleus to the auditory cortex. Compared to ungated acquisitions, cardiac gating with the SpO2 reduced image signal variability in all centers of the auditory system and increased the magnitude of activation in the inferior colliculus (p < …
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Protein and viral partitioning in two-phase aqueous micellar systems
… (inferior colliculus, dorsal and anteroventral cochlear nucleus) labeling. Second, the effect of past sound exposure on brain response to sound was examined. After daily exposure to a sound, labeling evoked by that sound was markedly decreased in cortex, but not in brainstem. In two very …
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Neural abnormalities underlying tinnitus and hyperacusis
… activity in only one of multiple pathways from cochlear nucleus to midbrain, the wave V elevation implicates this particular pathway in tinnitus. The results directly link tinnitus and hyperacusis to hyperactivity within the central auditory system. Because fMRI and ABRs reflect different …
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Temporal coding of the periodicity of monaural and binaural complex tones in the guinea pig auditory brainstem
… cells with responses similar to the medial nucleus of the trapezoid body (MNTB) and superior paraolivary nucleus (SPN) of other species were found in the guinea pig SOC. Presumed MNTB cells showed a three-component spike waveform shape; presumed SPN cells responded at the offset of …
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Elevated Cochlear Adenosine Causes Hearing Loss Via Adora2B Signaling
… HL, are limited to hearing aids and cochlear implants with no FDA-drugs available. The hearing process demands an abundance of ATP and HL is often attributed to a disruption in this metabolic energy currency. Patients who lack adenosine deaminase (ADA), the enzyme that irreversibly …
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Precise Temporal Processing in the Gerbil Auditory Brainstem
… However, the function of one prominent brainstem nucleus, the rodent superior paraolivary nucleus (SPN) is unknown. Two hypotheses have been tested using extracellular single cell physiology in the gerbil. The existence of binaural inputs indicates that the SPN might be involved in sound …
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Das Wachstumsverhalten von Nucleus cochlearis-Zellen auf verschiedenen Halbleitermaterialien
… Wachstumsverhalten und die Beeinflussbarkeit von Nucleus cochlearis(NC)-Explantaten auf verschiedenen Halbleitermaterialien zu gewinnen. Zur Beantwortung dieser Fragestellung wurden NC-Explantate von 10 Tage alten Raten für 96 Stunden in Neurobasalmedium auf den beiden Halbleitermaterialien …