3 edition of Functional Organisation and Plasticity of the Auditory Cortex (Audiology and Neuro-Otology , Vol 3, No 2&3) found in the catalog.
Functional Organisation and Plasticity of the Auditory Cortex (Audiology and Neuro-Otology , Vol 3, No 2&3)
March 1998 by S Karger Pub .
Written in English
|Contributions||Robert V. Harrison (Editor), N. Kraus (Editor), B. Lutkenhoner (Editor), R. Rajan (Editor), C. Schreiner (Editor)|
|The Physical Object|
|Number of Pages||162|
A recent review in JAMA Otolaryngology-Head & Neck Surgery discusses potential negative unintended consequences of broadband noise (BBN) for tinnitus a et al () present an argument suggesting that data demonstrating influence of BBN on maladaptive plasticity in the auditory pathway may further impair central function and result in a net increase in neural activity (or loss of.
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This chapter begins by presenting the basic principles of cortical plasticity. It highlights the improved auditory abilities in the blind. It also addresses the ‘what’ and ‘where’ in auditory cortex. In addition, the musical learning and auditory imagery, and the sensitive periods of auditory cortical plasticity.
functional organization of cortical circuits and their maturation. tion of that ear in the IC and even more so in the primary auditory cortex (A1), whereas the representation of the non-deprived ear Interest in the experience-dependent plasticity of auditory spatial. Functional Organisation and Plasticity of the Auditory Cortex book by: 4.
The diminished neural representation for 1 kHz reversed to baseline between the successive listening sessions.
These results suggest that rapid changes can occur in the tuning of neurons in the adult human auditory cortex following manipulation of the acoustic environment.
A dynamic form of neural plasticity may underlie the phenomenon observed by: A consequence of pediatric hearing loss is reorganization of the auditory cortex.
These changes can result in delayed and/or abnormal maturation and functioning of the auditory cortex. This presentation will review previous and more current investigations of cross-modal re-organization that occurs following auditory deprivation.
Specifically. Data are suitable as a baseUne for studies of the other two types of plasticity. Basic functional organization of auditory cortex: electropliysiology As there were no previous studies, the tonotopic or- ganization of gerbil primary auditory cortex (Al) and surrounding fields was analyzed in our labora- tory using standard microelectrode mapping tech- niques (Tillein, ; Thomas, ; Scheich, Cited by: Loss of unilateral peripheral input in SSD is associated with spatial reorganization of the auditory cortex in both hemispheres.
This change in central auditory functional organization may in turn lead to higher order hearing deficits that rely on interhemispheric by: 9. Functional organization of the auditory cortex Schreiner transient responses [ The latter study reports that the interspike interval and the number of spikes in brief trains of action potentials at the onset of tonal stimuli are controlled by independent by: Rewiring Cortex: functional plasticity of the auditory cortex during development 7 Figure 3.
Simplified schematic of the principal visual (black) and auditory (gray) cued fear conditioning pathways in normal (left) and rewired mice (right). The IC (shown as a dotted box) was lesioned bilaterally in neonatal mice to induce retinal projections to the by: 5.
The model for functional organization of human auditory cortex is in part based on findings in non-human primates, where the auditory cortex is hierarchically delineated into core, belt and parabelt by: The central auditory system is highly plastic in early childhood.
During periods of increased cortical plasticity, sensory deprivation (e.g., hearing loss) can lead to developmental abnormalities. However, the fact that the cortex is highly plastic also means that intervention can produce positive by: Genetic Program Auditory Cortex Brain Organization Brain Plasticity Afferent Pathway These keywords were added by machine and not by the authors.
This process is experimental and the keywords may be updated as the learning algorithm improves. Common themes in visual and auditory cortical organization, including several processing streams and the functional plasticity of cochleotopic auditory cortex, support general, modality-independent principles.
Other evidence for modality-specific anatomical and physiological properties constrains these parallels. AcknowledgementsCited by: Accumulating evidence shows that auditory cortex (AC) of humans, and other primates, is involved in more complex cognitive processes than feature segregation only, which are shaped by experience-dependent plasticity and thus likely show substantial individual variability.
However, thus far, individual variability of ACs has been considered a methodological impediment rather than a Author: Jianxun Ren, Hesheng Liu, Ting Xu, Franziska Schoeppe, Danhong Wang, Meiling Li, Yunxiang Lin, Julia. Musical training is an excellent model to study training‐related plasticity in auditory and motor areas.
SC within the sensorimotor or auditory cortex was respectively calculated by the mean FA of the tracts within each of the cortex. Our findings provide new evidence for revealing the mechanism of brain functional organization Cited by: 6.
Download Citation | On Jan 1,Jessica R. Newton and others published Rewiring Cortex: Functional Plasticity of the Auditory Cortex during Development | Find, read and. Auditory cortex: comparative aspects of maps and plasticity Scheich Conclusion Recent insights into single-unit functional and spatial (representational) aspects of complex processing in the auditory cortex have included the role of the auditory cortex in Cited by: The basic functional organization of gerbil auditory cortex was mapped in parallel with unit recording and with the fluorodeoxyglucose mapping (FDG) technique.
Among at least seven subfields in Cited by: Because visual cues provide a possible source of sensory feedback about the accuracy of acoustically guided behavior, one potential role of visual inputs to the auditory cortex is to guide the plasticity observed when localization cues are by: 3.
In the case of the auditory system, much of the evidence for adult plasticity has been obtained from neurophysiological studies of frequency selectivity and organization in animal models. There is additional evidence for adult plasticity from a number of studies of the temporal characteristics of responses to acoustic and intra-cochlear electrical by: functional changes at various points in the auditory path-way and at the cortex.
Obviously these techniques are not suitable for studying auditory system plasticity in humans. Noninvasive auditory-evoked electrophysiologic potentials, functional brain imaging techniques such as magnetoencephalography (MEG), and functional magnetic. Cite this paper as: Newton J.R., Sur M.
() Rewiring Cortex: Functional Plasticity of the Auditory Cortex during Development. In: Syka J., Merzenich M.M. (eds) Plasticity and Signal Representation in the Auditory by: 5. The involvement of the primary auditory cortex in cognitive functions, particularly learning and memory as reviewed here, has implications for a basic understanding of auditory processing in particular, as well as for the functional organization of the cerebral cortex in general.
Functional magnetic resonance imaging (fMRI) has provided some data for the auditory cortex in awake humans, but there is still a paucity of comparable data for subcortical auditory areas where.
primary auditory cortex. Specifically, we hypothesized that the functional organization of AI is altered as a consequence an animal’s improvement in auditory discrimination ability. To test this hypothesis, three adult owl monkeys were trained at an auditory frequency discrimination task for several Size: 1MB.
Synaptic Organization and Plasticity in the Auditory System 99 Fig. 7 Electron micrographs showing endbulbs of Held (yellow shading) in normal, congenitally deaf, and implanted cats.
Our findings suggest that brain plasticity in deaf adults is not limited to changes in auditory cortex but additionally alters the coupling between other large-scale networks.
These widespread functional connectivity changes may provide a mechanism for the superior behavioral performance of the deaf in visual and attentional : Kamil Bonna, Karolina Finc, Maria Zimmermann, Łukasz Bola, Piotr Mostowski, Maciej Szul, Paweł Rutko.
The auditory cortex is the part of the temporal lobe that processes auditory information in humans and many other is a part of the auditory system, performing basic and higher functions in hearing, such as possible relations to language switching.
It is located bilaterally, roughly at the upper sides of the temporal lobes – in humans, curving down and onto the medial surface FMA: Neurons in the auditory cortex exhibit distinct frequency tuning to the onset and offset of sounds, but the cause and significance of ON and OFF receptive field (RF) organisation Cited by: 9.
These advances ultimately help us understand the functional consequences of e.g., hearing loss and tinnitus which may affect the function or organization of the auditory cortex (Eggermont, ; Komiya & Eggermont, ).
Both conditions are good examples of auditory disorders with an increasing prevalence due to an aging : Deborah Hall, Cornelis Lanting, Douglas E.
Hartley. This volume is a summary and synthesis of the current state of auditory forebrain organization. It addresses a clinical and academic research area that has experienced substantial progress in understanding the contribution of the auditory forebrain (that is, the medial geniculate body, the auditory cortex, and limbic-related structures) to hearing, sound localization, communication, emotive.
free data-driven method to probe the functional organizations of the marmoset auditory cortex. This method was first developed by Norman-Haignere et al.
() for human fMRI studies. We played the same set of naturalistic sounds to marmosets and measured activities in the auditory cortex with wide-field optical imaging. We conclude that early auditory deprivation alters not only the organization of auditory regions but also the interactions between auditory and primary visual cortex and that auditory input, as indexed by hearing aid use, may inhibit cross-modal reorganization in early-deaf by: Development and plasticity of the functional laminar mesoscale organization of the primary auditory cortex during a critical period of development is the primary auditory cortex (A1).
The functional architecture of A1 in adult mammals has been widely studied on a macroscale and single-cell level, and it is evident that this sensory area is Author: Krystyna Solarana. FUNCTIONAL ORGANIZATION AND PLASTICITY OF A1 Selection of Experimental Methodology and Animal Model Experience exerts a powerful influence on the functional organization of primary auditory cortex (A1).
Much of this work has been done in the laboratory rat, Rattus norvegicus, and has focused on neural tuning for sound frequency. Neurons in A1 are. Auditory Cortex Inferior Colliculus Primary Auditory Cortex Medial Geniculate Body Medial Division These keywords were added by machine and not by the authors.
This process is experimental and the keywords may be updated as the learning algorithm by: functional organization principle in the auditory cortex relates to the representation of the auditory receptor sur- face, the organ of Corti in the cochlea (Figure 1 A).
Coordinated plasticity in brainstem and auditory cortex contributes to enhanced categorical speech perception in musicians. European Journal of Neuroscience, 40. The authors show that inhibitory interneurons in cortical layer 1 integrate topographically organized thalamic and neuromodulatory inputs to sculpt sound frequency maps in primary auditory cortex Cited by: 8.
Development, maintenance and plasticity of tonotopic projections from cochlea to auditory cortex by Robert V Harrison 9. Central auditory plasticity in mouse models of progressive sensorineural hearing loss by James F Willott Recruitment of the auditory cortex in congenitally deaf cats by Andrej Kral, Rainer Hartmann & Rainer Klinke /5(2).
Hearing-impaired adults and children who receive intervention with hearing aids and cochlear implants provide a platform to examine the trajectories and characteristics of deprivation-induced and experience-dependent plasticity in the central auditory system.
We review the evidence for sensitive periods for development of the central auditory : Anu Sharma, Hannah Glick, Lauren Durkee. This chapter examines the tonotopic organization of the human auditory cortex using intracerebrally recorded evoked potentials studied as a function of the anatomical recording site.
The sensitivity of a neuronal population to a given frequency is determined from fluctuations in auditory evoked potential (AEP) amplitude between different recording sites in the primary auditory cortex and. Although plasticity of the human auditory cortex has been demonstrated (Ponton et al., ; Pantev et al., ; Rauschecker, ; Giraud et al., ), only few reports exist about its long-term dynamics (Vasama et al., ; Bilecen et al., ).
Magnetoencephalography (MEG) is a neuroimaging method well suited for investigation of these Cited by: Karns, Dow, and Neville (), from the Department of Psychology and Institute of Neuroscience at the University of Oregon in Eugene, Oregon, examined "cross-modal neuroplasticity" within Heschl’s Gyrus (the primary auditory cortex) in congenitally deaf humans through functional magnetic resonance imaging (fMRI).
The authors used visual, somatosensory, and bimodal stimuli.