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Current theories of visual change detection emphasize the importance of conscious attention to detect unexpected changes in the visual environment. However, an increasing body of studies shows that the human brain is capable of detecting even small visual changes, especially if such changes violate non-conscious probabilistic expectations based on repeating experiences. In other words, our brain automatically represents statistical regularities of our visual environmental. Since the discovery of the auditory mismatch negativity (MMN) event-related potential (ERP) component, the majority of research in the field has focused on auditory deviance detection. Such automatic change detection mechanisms operate in the visual modality too, as indicated by the visual mismatch negativity (vMMN) brain potential to rare changes. VMMN is typically elicited by stimuli with infrequent (deviant) features embedded in a stream of frequent (standard) stimuli, outside the focus of attention. In this research topic we aim to present vMMN as a prediction error signal. Predictive coding theories account for phenomena such as mismatch negativity and repetition suppression, and place them in a broader context of a general theory of cortical responses. A wide range of vMMN studies has been presented in this Research Topic. Twelve articles address roughly four general sub-themes including attention, language, face processing, and psychiatric disorders. Additionally, four articles focused on particular subjects such as the oblique effect, object formation, and development and time-frequency analysis of vMMN. Furthermore, a review paper presented vMMN in a hierarchical predictive coding framework. Each paper in this Research Topic is a valuable contribution to the field of automatic visual change detection and deepens our understanding of the short term plasticity underlying predictive processes of visual perceptual learning.
We make 3-5 eye movements per second, and these movements are crucial in helping us deal with the vast amounts of information we encounter in our everyday lives. In recent years, thanks to the development of eye tracking technology, there has been a growing interest in monitoring and measuring these movements, with a view to understanding how we attend to and process the visual information we encounter Eye tracking as a research tool is now more accessible than ever, and is growing in popularity amongst researchers from a whole host of different disciplines. Usability analysts, sports scientists, cognitive psychologists, reading researchers, psycholinguists, neurophysiologists, electrical engineers, and others, all have a vested interest in eye tracking for different reasons. The ability to record eye-movements has helped advance our science and led to technological innovations. However, the growth of eye tracking in recent years has also presented a variety of challenges - in particular the issue of how to design an eye-tracking experiment, and how to analyse the data. This book is a much needed comprehensive handbook of eye tracking methodology. It describes how to evaluate and acquire an eye-tracker, how to plan and design an eye tracking study, and how to record and analyse eye-movement data. Besides technical details and theory, the heart of this book revolves around practicality - how raw data samples are converted into fixations and saccades using event detection algorithms, how the different representations of eye movement data are calculated using AOIs, heat maps and scanpaths, and how all the measures of eye movements relate to these processes. Part I presents the technology and skills needed to perform high-quality research with eye-trackers. Part II covers the predominant methods applied to the data which eye-trackers record. These include the parsing of raw sample data into oculomotor events, and how to calculate other representations of eye movements such as heat maps and transition matrices. Part III gives a comprehensive outline of the measures which can be calculated using the events and representations described in Part II. This is a taxonomy of the measures available to eye-tracking researchers, sorted by type of movement of the eyes and type of analysis. For anyone in the sciences considering conducting research involving eye-tracking, this book will be an essential reference work.
Occupational Neurology a volume in the Handbook of Clinical Neurology Series, provides a comprehensive overview of the science, clinical diagnosis, and treatment for neurotoxin related neurological and psychiatric disorders. This timely collection provides not only a complete scientific reference on the chemical origin of this class of neurological and psychiatric disorders, but also a practical guide to diagnosis and treatment challenges and best practices. Handbook of Clinical Neurology Series The first volume of the Handbook of Clinical Neurology under the editorship of George Bruyn and Pierre Vinken was published in 1968. In 1982, the series was brought to an interim conclusion with the publication of the cumulative index volume (Volume 44). By that stage, the Handbook had come to represent one of the largest scientific works ever published. It enjoys a high reputation in specialist media circles throughout the world. After the series was concluded in 1982, it was realized that an update of the material was imperative. Accordingly, a revised series was planned and published over the following years, concluding with the publication of another cumulative index to both series (Volume 76-78) in 2002. Since then, George Bruyn has passed away and Pierre Vinken has retired, but the need for a further new series, incorporating advances in the field, again become necessary. Professors Michael J. Aminoff, François Boller and Dick F. Swaab have with enthusiasm taken on the responsibility of supervising the preparation of a third series, the first volumes of which were published in 2003. Now, more than 130 volumes after the first published, the Handbook of Clinical Neurology series continues to have an unparalleled reputation for providing the latest foundational research, diagnosis, and treatment protocols essential for both basic neuroscience research and clinical neurology. - Provides comprehensive coverage of neurotoxins, especially in the workplace - Details the latest science as the foundation for neurotoxicity diagnosis and treatment - Presents coverage of the diagnosis and treatment essential for clinical neurologists and occupational medicine specialists
The human brain is arguably the most complex system we know of. Over the past few decades, scientists have developed several methods and theories for studying the functional organization of the brain, and how cognitive/perceptual/emotional processes might arise from the brain's electro-chemical-computational dynamics. These methods facilitated and inspired large literatures on brain-behavior links, and yet there remains a seemingly endless chasm between our simple impoverished models and the unfathomable complexity of the human brain. The purpose of this Research Topic is to ask the question: Are we thinking about thinking about the brain in the right way? In most scientific publications, researchers describe a broad and established theoretical framework and briefly describe new experimental results consistent with that framework. Here, we encourage authors to express ideas that might be radical, controversial, or different from established theories or methodological approaches. Supportive data are highly encouraged. The aim is to spark discussions about the validity and usefulness of current methodological/theoretical approaches in human cognitive neuroscience, with the goal of inspiring new approaches and ways of thinking. Neuroscience is a massive field with myriad methodological and theoretical approaches; we focus this Research Topic on approaches most commonly used in human neuroscience.
Functional Neuromarkers for Psychiatry explores recent advances in neuroscience that have allowed scientists to discover functional neuromarkers of psychiatric disorders. These neuromarkers include brain activation patterns seen via fMRI, PET, qEEG, and ERPs. The book examines these neuromarkers in detail—what to look for, how to use them in clinical practice, and the promise they provide toward early detection, prevention, and personalized treatment of mental disorders. The neuromarkers identified in this book have a diagnostic sensitivity and specificity higher than 80%. They are reliable, reproducible, inexpensive to measure, noninvasive, and have been confirmed by at least two independent studies. The book focuses primarily on the analysis of EEG and ERPs. It elucidates the neuronal mechanisms that generate EEG spontaneous rhythms and explores the functional meaning of ERP components in cognitive tasks. The functional neuromarkers for ADHD, schizophrenia, and obsessive-compulsive disorder are reviewed in detail. The book highlights how to use these functional neuromarkers for diagnosis, personalized neurotherapy, and monitoring treatment results. - Identifies specific brain activation patterns that are neuromarkers for psychiatric disorders - Includes neuromarkers as seen via fMRI, PET, qEEG, and ERPs - Addresses neuromarkers for ADHD, schizophrenia, and OCD in detail - Provides information on using neuromarkers for diagnosis and/or personalized treatment
This important book includes research derived from non-invasive brain imaging modalities used to explore the spatial and temporal organisation of the neural systems supporting human behaviour. Imaging modalities of interest include positron emission tomography, event-related potentials, electro-and magnetoencephalography, magnetic resonance imaging, and single-photon emission tomography. Coverage includes novel brain imaging methods, analyses for detecting or localising neural activity, synergistic uses of multiple imaging modalities, and strategies for the design of behavioural paradigms and neural-systems modelling.