Results 161 to 170 of about 1,607 (175)
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Alterations in tonotopy and auditory cerebral asymmetry in schizophrenia
Biological Psychiatry, 2002Deficits in basic auditory perception have been described in schizophrenia. Previous electrophysiologic imaging research has documented a structure-function disassociation in the auditory system in schizophrenia. This study examines whether the most fundamental level of auditory cortical organization, tonotopy, is altered in schizophrenia.The tonotopic
Donald C, Rojas +5 more
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Mapping Tonotopy in Human Auditory Cortex
2013Tonotopy is arguably the most prominent organizational principle in the auditory pathway. Nevertheless, the layout of tonotopic maps in humans is still debated. We present neuroimaging data that robustly identify multiple tonotopic maps in the bilateral auditory cortex.
van Dijk, Pim, Langers, Dave R M
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A Triboelectric‐Based Artificial Basilar Membrane to Mimic Cochlear Tonotopy
Advanced Healthcare Materials, 2016A triboelectric-based artificial basilar membrane (TEABM) can mimic cochlear tonotopy by triboelectrification between Kapton film and aluminum foil. The two films are stacked and clamped to form a beam structure. The TEABM tonotopy is tested using an animal model to verify the feasibility of a self-powered acoustic sensor for a prototype cochlear ...
Jang, Jongmoon +3 more
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Cochlear and CNS tonotopy: Normal physiological shifts in the mustached bat
Hearing Research, 1991The ear of the mustached bat (Pteronotus parnellii) shows marked cochlear resonance near 60 kHz and many sharply tuned neurons throughout the brain have best frequencies (BF) near the cochlear resonance frequency (CRF). Controlled changes in the normal physiological range of body temperature (approx 37-42 degrees C) were used to change the CRF and to ...
R F, Huffman, O W, Henson
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The Journal of the Acoustical Society of America, 2011
It is not known whether the auditory hair cells of fishes possess a tonotopic organization in the saccule. To investigate this question, we exposed groups of six goldfish (Carassius auratus) to one of four tones (100, 800, 2000, and 4000 Hz) at 176 dB re 1 μPa for 48 h.
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It is not known whether the auditory hair cells of fishes possess a tonotopic organization in the saccule. To investigate this question, we exposed groups of six goldfish (Carassius auratus) to one of four tones (100, 800, 2000, and 4000 Hz) at 176 dB re 1 μPa for 48 h.
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Impact of cochlear tonotopy on electrically evoked compound action potentials (ECAPs)
Acta Oto-Laryngologica, 2019A wide range of cochlear implant electrode designs exists. Lateral wall electrodes may be favored for their potential to preserve residual hearing by virtue of being thin and delicate; whereas perimodiolar electrodes may have advantages in case of profound hearing loss, due to electrode positioning in close proximity to the auditory nerve fibers.The ...
Christov, Florian +4 more
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Mismatch of structural and functional tonotopy for natural sounds in the auditory midbrain
Neuroscience, 2014Neurons in the auditory system are spatially organized in their responses to pure tones, and this tonotopy is expected to predict neuronal responses to more complex sounds such as vocalizations. We presented vocalizations with low-, medium- and high-frequency content to determine if selectivity of neurons in the inferior colliculus (IC) of mice ...
C V, Portfors, P D, Roberts
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Sustained fields of tones and glides reflect tonotopy of the auditory cortex
NeuroReport, 1995Cortical activation in response to two types of auditory stimuli, constant-frequency tones and frequency glides, was studied by measuring the magnetic field outside the head using a whole-head 122-channel magnetometer. Both the magnetic N1m and sustained responses were located in the supratemporal plane of the primary auditory cortex.
M, Huotilainen +7 more
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Tonotopy of the Auditory-Evoked Field Component N100m in Patients with Schizophrenia
Journal of Psychophysiology, 2000Abstract A number of clinical studies on the auditory neuromagnetic evoked field (AEF) component N100m have reported an altered lateralization in schizophrenic patients. This study addresses the problem of a possible functional reorganization of the temporal cortex in schizophrenia by examining the tonotopic organization of the N100m.
T. Rosburg +5 more
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Morphological basis for tonotopy in the anuran amphibian papilla.
Scanning electron microscopy, 1983The amphibian papilla of the more-recently derived frogs and toads is similar to the mammalian cochlea in at least three ways: 1. Its sensory surface is a slender, curved structure. 2. It exhibits tonotopy, with the highest-frequency sensitivity located at the end apparently closest to the source of acoustical excitation. 3.
E R, Lewis, E L, Leverenz
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