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Author : Jason Donald Warren
Publisher :
ISBN 13 :
Total Pages : 192 pages
Book Rating : 4.:/5 (618 download)
Download or read book Mechanisms of Pattern Analysis in Human Auditory Cortex written by Jason Donald Warren and published by . This book was released on 2005 with total page 192 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Alexander Gutschalk
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (7 download)
Download or read book Mechanisms of Auditory Scene Analysis in Human Auditory Cortex written by Alexander Gutschalk and published by . This book was released on 2009 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : T. Overath
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (829 download)
Download or read book Representation of Statistical Sound Properties in Human Auditory Cortex written by T. Overath and published by . This book was released on 2009 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The work carried out in this doctoral thesis investigated the representation of statistical sound properties in human auditory cortex. It addressed four key aspects in auditory neuroscience: the representation of different analysis time windows in auditory cortex; mechanisms for the analysis and segregation of auditory objects; information-theoretic constraints on pitch sequence processing; and the analysis of local and global pitch patterns. The majority of the studies employed a parametric design in which the statistical properties of a single acoustic parameter were altered along a continuum, while keeping other sound properties fixed. The thesis is divided into four parts. Part I (Chapter 1) examines principles of anatomical and functional organisation that constrain the problems addressed. Part II (Chapter 2) introduces approaches to digital stimulus design, principles of functional magnetic resonance imaging (fMRI), and the analysis of fMRI data. Part III (Chapters 3-6) reports five experimental studies. Study 1 controlled the spectrotemporal correlation in complex acoustic spectra and showed that activity in auditory association cortex increases as a function of spectrotemporal correlation. Study 2 demonstrated a functional hierarchy of the representation of auditory object boundaries and object salience. Studies 3 and 4 investigated cortical mechanisms for encoding entropy in pitch sequences and showed that the planum temporale acts as a computational hub, requiring more computational resources for sequences with high entropy than for those with high redundancy. Study 5 provided evidence for a hierarchical organisation of local and global pitch pattern processing in neurologically normal participants. Finally, Part IV (Chapter 7) concludes with a general discussion of the results and future perspectives.
Author : David Poeppel
Publisher : Springer Science & Business Media
ISBN 13 : 1461423139
Total Pages : 404 pages
Book Rating : 4.4/5 (614 download)
Download or read book The Human Auditory Cortex written by David Poeppel and published by Springer Science & Business Media. This book was released on 2012-04-12 with total page 404 pages. Available in PDF, EPUB and Kindle. Book excerpt: We live in a complex and dynamically changing acoustic environment. To this end, the auditory cortex of humans has developed the ability to process a remarkable amount of diverse acoustic information with apparent ease. In fact, a phylogenetic comparison of auditory systems reveals that human auditory association cortex in particular has undergone extensive changes relative to that of other species, although our knowledge of this remains incomplete. In contrast to other senses, human auditory cortex receives input that is highly pre-processed in a number of sub-cortical structures; this suggests that even primary auditory cortex already performs quite complex analyses. At the same time, much of the functional role of the various sub-areas in human auditory cortex is still relatively unknown, and a more sophisticated understanding is only now emerging through the use of contemporary electrophysiological and neuroimaging techniques. The integration of results across the various techniques signify a new era in our knowledge of how human auditory cortex forms basis for auditory experience. This volume on human auditory cortex will have two major parts. In Part A, the principal methodologies currently used to investigate human auditory cortex will be discussed. Each chapter will first outline how the methodology is used in auditory neuroscience, highlighting the challenges of obtaining data from human auditory cortex; second, each methods chapter will provide two or (at most) three brief examples of how it has been used to generate a major result about auditory processing. In Part B, the central questions for auditory processing in human auditory cortex are covered. Each chapter can draw on all the methods introduced in Part A but will focus on a major computational challenge the system has to solve. This volume will constitute an important contemporary reference work on human auditory cortex. Arguably, this will be the first and most focused book on this critical neurological structure. The combination of different methodological and experimental approaches as well as a diverse range of aspects of human auditory perception ensures that this volume will inspire novel insights and spurn future research.
Author : Manuel S. Malmierca
Publisher : Gulf Professional Publishing
ISBN 13 : 9780123668714
Total Pages : 584 pages
Book Rating : 4.6/5 (687 download)
Download or read book Auditory Spectral Processing written by Manuel S. Malmierca and published by Gulf Professional Publishing. This book was released on 2005-11-23 with total page 584 pages. Available in PDF, EPUB and Kindle. Book excerpt: All natural auditory signals, including human speech and animal communication signals, are spectrally and temporally complex, that is, they contain multiple frequencies and their frequency composition, or spectrum, varies over time. The ability of hearers to identify and localize these signals depends on analysis of their spectral composition. For the overwhelming majority of human listeners spoken language is the major means of social communication, and this communication therefore depends on spectral analysis. Spectral analysis begins in the cochlea, but is then elaborated at various stages along the auditory pathways in the brain that lead from the cochlea to the cerebral cortex. The broad purpose of Auditory Spectral Processing is to provide a comprehensive account of the way in which spectral information is processed in the brain and the way in which this information is used by listeners to identify and localize sounds. Examines spectral processing mechanisms at different levels along the auditory neuraxis, from the cochlear nucleus to the cortex Reviews in detail psychophysical and neurophysiological evidence on the way in which spectral information is processed within and across frequency channels Presents information on the nature of the spectral information required for speech and music perception Examines a series of issues that relate to the role of spectral analysis in higher order/cognitive aspects of hearing and in clinical and applied contexts
Author : Sascha Frühholz
Publisher :
ISBN 13 : 0198743181
Total Pages : 977 pages
Book Rating : 4.1/5 (987 download)
Download or read book The Oxford Handbook of Voice Perception written by Sascha Frühholz and published by . This book was released on 2019 with total page 977 pages. Available in PDF, EPUB and Kindle. Book excerpt: Speech perception has been the focus of innumerable studies over the past decades. While our abilities to recognize individuals by their voice state plays a central role in our everyday social interactions, limited scientific attention has been devoted to the perceptual and cerebral mechanisms underlying nonverbal information processing in voices. The Oxford Handbook of Voice Perception takes a comprehensive look at this emerging field and presents a selection of current research in voice perception. The forty chapters summarise the most exciting research from across several disciplines covering acoustical, clinical, evolutionary, cognitive, and computational perspectives. In particular, this handbook offers an invaluable window into the development and evolution of the 'vocal brain', and considers in detail the voice processing abilities of non-human animals or human infants. By providing a full and unique perspective on the recent developments in this burgeoning area of study, this text is an important and interdisciplinary resource for students, researchers, and scientific journalists interested in voice perception.
Author : Jeffery A. Winer
Publisher : Springer Science & Business Media
ISBN 13 : 1441900748
Total Pages : 711 pages
Book Rating : 4.4/5 (419 download)
Download or read book The Auditory Cortex written by Jeffery A. Winer and published by Springer Science & Business Media. This book was released on 2010-12-02 with total page 711 pages. Available in PDF, EPUB and Kindle. Book excerpt: There has been substantial progress in understanding the contributions of the auditory forebrain to hearing, sound localization, communication, emotive behavior, and cognition. The Auditory Cortex covers the latest knowledge about the auditory forebrain, including the auditory cortex as well as the medial geniculate body in the thalamus. This book will cover all important aspects of the auditory forebrain organization and function, integrating the auditory thalamus and cortex into a smooth, coherent whole. Volume One covers basic auditory neuroscience. It complements The Auditory Cortex, Volume 2: Integrative Neuroscience, which takes a more applied/clinical perspective.
Author : David J. Getty
Publisher : Routledge
ISBN 13 : 1315532603
Total Pages : 236 pages
Book Rating : 4.3/5 (155 download)
Download or read book Auditory and Visual Pattern Recognition written by David J. Getty and published by Routledge. This book was released on 2017-03-31 with total page 236 pages. Available in PDF, EPUB and Kindle. Book excerpt: The systematic scientific investigation of human perception began over 130 years ago, yet relatively little is known about how we identify complex patterns. A major reason for this is that historically, most perceptual research focused on the more basic processes involved in the detection and discrimination of simple stimuli. This work progressed in a connectionist fashion, attempting to clarify fundamental mechanisms in depth before addressing the more complex problems of pattern recognition and classification. This extensive and impressive research effort built a firm basis from which to speculate about these issues. What seemed lacking, however, was an overall characterization of the recognition problem – a broad theoretical structure to direct future research in this area. Consequently, our primary objective in this volume, originally published in 1981, was not only to review existing contributions to our understanding of classification and recognition, but to project fruitful areas and directions for future research as well. The book covers four areas: complex visual patterns; complex auditory patterns; multi-dimensional perceptual spaces; theoretical pattern recognition.
Author : Matthias Staib
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (14 download)
Download or read book Mechanisms of Pavlovian Aversive Conditioning in Human Auditory Cortex written by Matthias Staib and published by . This book was released on 2018 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Diedre D. De Souza
Publisher :
ISBN 13 :
Total Pages : 82 pages
Book Rating : 4.:/5 (16 download)
Download or read book Organization of Human Auditory Cortex written by Diedre D. De Souza and published by . This book was released on 2013 with total page 82 pages. Available in PDF, EPUB and Kindle. Book excerpt: Functional Magnetic Resonance Imaging (fMRI) was used to investigate the extent, magnitude and patterns of brain activity in response to frequency-modulated sounds. We examined this by manipulating the direction (rise vs. fall) and the rate (fast vs. slow) of a series of iterated rippled noise (IRN) bursts. Participants were presented with auditory stimuli while functional images of the cortex were obtained. Univariate analyses revealed more widespread activation within auditory cortex in response to frequency-modulated sweeps compared to steady-state sounds. Furthermore, multivoxel pattern analysis (MVPA) was used to determine whether regions within auditory cortex were involved in feature-specific encoding. The pattern of activity within auditory cortex showed a high degree of consistency for the rate dimension, suggesting this pattern of activity infers representational information. Additionally, activity patterns for direction were not distinguishable, which suggests this coding occurs over a neural activity pattern not distinguishable at the level of the BOLD response.
Author : B. Kollmeier
Publisher : Springer Science & Business Media
ISBN 13 : 3540730087
Total Pages : 553 pages
Book Rating : 4.5/5 (47 download)
Download or read book Hearing - From Sensory Processing to Perception written by B. Kollmeier and published by Springer Science & Business Media. This book was released on 2007-09-19 with total page 553 pages. Available in PDF, EPUB and Kindle. Book excerpt: Hearing – From Sensory Processing to Perception presents the papers of the latest “International Symposium on Hearing”, a meeting held every three years focusing on psychoacoustics and the research of the physiological mechanisms underlying auditory perception. The proceedings provide an up-to-date report on the status of the field of research into hearing and auditory functions. The 59 chapters treat topics such as: the physiological representation of temporal and spectral stimulus properties as a basis for the perception of modulation patterns, pitch and signal intensity; spatial hearing and the physiological mechanisms of binaural processing in mammals; integration of the different stimulus features into auditory scene analysis; physiological mechanisms related to the formation of auditory objects; speech perception; and limitations of auditory perception resulting from hearing disorders.
Author : Terence W. Picton
Publisher : Plural Publishing
ISBN 13 : 1597566225
Total Pages : 649 pages
Book Rating : 4.5/5 (975 download)
Download or read book Human Auditory Evoked Potentials written by Terence W. Picton and published by Plural Publishing. This book was released on 2010-09-01 with total page 649 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book reviews how we can record the human brain's response to sounds, and how we can use these recordings to assess hearing. These recordings are used in many different clinical situations--the identification of hearing impairment in newborn infants, the detection of tumors on the auditory nerve, the diagnosis of multiple sclerosis. As well they are used to investigate how the brain is able to hear--how we can attend to particular conversations at a cocktail party and ignore others, how we learn to understand the language we are exposed to, why we have difficulty hearing when we grow old. This book is written by a single author with wide experience in all aspects of these recordings. The content is complete in terms of the essentials. The style is clear; equations are absent and figures are multiple. The intent of the book is to make learning enjoyable and meaningful. Allusions are made to fields beyond the ear, and the clinical importance of the phenomena is always considered.
Author : Reiko Matsushita
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (119 download)
Download or read book Modulation of Human Auditory Cortex with Transcranial Direct Current Stimulation written by Reiko Matsushita and published by . This book was released on 2020 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: "Hemispheric asymmetries in processing of different acoustic features are well-known aspect of the auditory cortex. According to one model; the auditory cortex in the left hemisphere is tuned to process rapidly changing temporal information, which are abundant in human speech, and the auditory cortex in the right hemisphere play a dominant role in spectral processing hence significantly contributing to pitch processing. In the past, this spectral-temporal model of the auditory cortex has been addressed mainly using neuroimaging techniques, which inform us about correlational relationships between behaviors and brain activities. In the present thesis, we seek causal evidence that supports the spectral-temporal model, focusing on the right-hemisphere dominance in pitch processing, using transcranial direct current stimulation (tDCS).tDCS is a relatively new technique, which has potential to allow us to address the causal role of certain brain activities, to explore functional connectivity, and possibly to help different neurological and psychological conditions. However, little is known about the mechanisms of tDCS, especially in the auditory domain. We aimed to elucidate the mechanisms of tDCS in the human auditory system, and to develop a protocol to assess the right-hemisphere dominance in pitch processing and learning using tDCS.In the first study (chapter 2), we established a behavioural paradigm to test tDCS-induced effect on pitch processing using a pitch discrimination test called micromelody discrimination task. In this task short tone patterns using small (
Author : Vernon B. Mountcastle
Publisher :
ISBN 13 : 9780801804793
Total Pages : 304 pages
Book Rating : 4.8/5 (47 download)
Download or read book Interhemispheric Relations and Cerebral Dominance written by Vernon B. Mountcastle and published by . This book was released on 1962-09 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt: Of the conference by Richard Jung
Author : Arthur W. Toga
Publisher : Gulf Professional Publishing
ISBN 13 : 9780126925456
Total Pages : 680 pages
Book Rating : 4.9/5 (254 download)
Download or read book Brain Mapping written by Arthur W. Toga and published by Gulf Professional Publishing. This book was released on 2000-04-26 with total page 680 pages. Available in PDF, EPUB and Kindle. Book excerpt: The "sequel" to "Brain Mapping: The Methods", covers the utlization of methods for the study of brain structure and function. Organized by systems, it presents information on the normal as well as the diseased brain. It integrates the various methodologies with appropriate usage.
Author : Caroline Witton
Publisher :
ISBN 13 :
Total Pages : 216 pages
Book Rating : 4.:/5 (432 download)
Download or read book Temporal Pattern Analysis by the Human Auditory System written by Caroline Witton and published by . This book was released on 1999 with total page 216 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Kuwook Cha
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (1 download)
Download or read book Spectrotemporal Processing and Intrinsic Functional Connectivity in Human Auditory Cortex written by Kuwook Cha and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: "Studying the interaction and connectivity between neurons is important to understanding human perception and behaviors. Functional connectivity, defined as temporal coherence between recordings of neural activity in different locations, is a promising paradigm to study intrinsic dynamics of brain activity. In mammalian sensory cortices, intrinsic functional connectivity revealed by recording spontaneous activity has been positively correlated to sensory tuning similarities of neurons. Human functional magnetic resonance imaging (fMRI) studies have also demonstrated similar patterns with respect to retinotopy and somatotopy. Such coherent spontaneous activity have also been reported to be associated with behavior and perception. This thesis seeks to understand the nature of coherent spontaneous activity, that is, intrinsic functional connectivity, in human auditory cortex in relation to its spectrotemporal processing. In Study 1, we obtained fMRI responses to pure tone stimuli and estimated best (preferred) frequencies of individual voxels in human auditory cortex. Intrinsic functional connectivity was computed by correlating residual activity, which was obtained by subtracting stimulus effects from fMRI responses, between every pair of voxels, and their correlations were sorted by difference in best frequencies. This analysis revealed that intrinsic functional connectivity decreases as the difference in best frequencies of paired voxels increases. This effect was consistent within and across hemispheres, and within and across regions of core and belt areas. The effect was preserved even after correcting functional connectivity for distance between voxels. Functional connectivity of the right core area had particularly high frequency preference specificity compared to the other three areas. Consistent results were observed when resting-epoch data were used. Study 2 was designed not only to generalize the tuning specificity of functional connectivity to spectrotemporal tuning properties, but to address functional implications of having tuning-specific functional connectivity. The cortical activity measured in fMRI in response to 72 natural sounds were analyzed to characterize spectrotemporal modulation transfer functions (MTFs) of individual voxels that are parameterized by characteristic frequency, spectral density and modulation rate. These tuning functions provided enough information to classify novel sounds from separate test datasets. Intrinsic functional connectivity was computed by correlating residual activity taken from auditory responses and resting-state activity from a separate run. Functional connectivity from both activity types was specific to the three tuning parameters. To examine the implication of functional connectivity on spectrotemporal processing, we built a model that combines spectrotemporal tuning functions and functional connectivity to predict voxel activity, and tested whether single-trial stimulus identification based on this model is improved compared to the model which uses the tuning functions. When functional connectivity was incorporated into the model, single-trial decoding performance was better than when only the tuning functions are used. The effect was preserved across primary and non-primary auditory cortex in both hemispheres. The results were also confirmed when maximum likelihood decoders with covariance estimated from residual or resting-state activity were used. The findings in the above studies suggest that functional connectivity in human auditory cortex is associated with its functional and anatomical architecture, and that tuning-specifically coherent spontaneous activity is functionally important to neural encoding and decoding mechanisms. " --
