Download or read book Behavioral and Electrophysiological Correlates of Attention and Cross modal Distraction written by Lindsay Bell and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: ABSTRACT: Attention refers to the selective allocation of processing resources. This allocation of resources is said to be greatly influenced by the presence of emotional stimuli within the perceptual array, as these stimuli may signal threat or reward. Accordingly, psychological models of visual attention predict that the processing of emotionally arousing stimuli will be enhanced compared to cues lacking such emotional relevance. Several prior neurocognitive studies have demonstrated an increased attentional response in the visual cortex related to the processing of emotional stimuli. However, the influence of emotional stimuli on behavioral response remains unclear. The present study examined the neural and behavioral responses to a visual arithmetic task in the presence of distracters in order to investigate whether the presence of these stimuli influenced attentional processing. Participants completed a series of simple arithmetic problems while high arousal, low arousal, and no-information visual and auditory distracters were presented. The accuracy of responding to arithmetic problems was analyzed as well as the steady-state visual evoked potential elicited by the primary task. This event-related potential was employed as an electrophysiological measure of the allocation of attention, as the amplitude of the sinosuidal waveform is increased significantly with attention. The results of this study revealed that highly arousing distracters impaired the accuracy of responding to the arithmetic problems compared to low arousal and no-information distracters. The examination of the amplitude of the steady-state visual evoked potential revealed that high arousal auditory distracters withdrew attentional processing from the primary visual task, whereas high arousal visual distracters led to a visual facilitation effect. A discussion of these findings and their relationship to previous attentional processing studies is provided.

Download or read book Behavioral and Electrophysiological Correlates of Cross modal Enhancement for Unaware Visual Events written by Márta Szabina Pápai and published by . This book was released on 2017 with total page 222 pages. Available in PDF, EPUB and Kindle. Book excerpt: Diariamente recibimos mucha información que procede simultáneamente de distintos sentidos, que se combina en el cerebro para conseguir una respuesta rápida y precisa. Muchas veces, esto ocurre mediante la integración multisensorial. Sin embargo, ¿puede darse integración multisensorial en situaciones de emergencia, aunque los recursos cognitivos son ocupados? Para resolver esta cuestión, utilizamos estímulos audiovisuales presentados de forma repentina, sin contenido informativo en un paradigma de rivalidad binocular. Esto nos permitió medir la integración de abajo a arriba en una situación cuando los mecanismos de arriba abajo están limitados. Los hallazgos de esta tesis ponen en duda puntos de vista anteriores, ya que un beneficio intermodal en el comportamiento no resulta necesariamente de la integración de abajo a arriba sino que, primero, la contribución individual de cada uno de los estímulos puede explicar la facilitación intermodal y, segundo, no se puede descartar una influencia de la atención de abajo arriba.

Download or read book From Attention to Goal Directed Behavior written by Francisco Aboitiz and published by Springer Science & Business Media. This book was released on 2008-11-21 with total page 335 pages. Available in PDF, EPUB and Kindle. Book excerpt: Attention is a key psychological construct in the understanding of human cognition, and the target of enormous efforts to elucidate its physiological mechanisms, as the wealth of literature—both primary and secondary—attests (for recent compilations see Itti, Rees, & Tsotsos, 2005; Paletta & Rome, 2008; Posner, 2004). But in addition to asking what attention actually is, decomposing and analyzing its varieties, or delimiting its neurobiological mechanisms and effects, in this volume we want to explore attention somewhat differently. We believe that a full-fledged theory of attention must consider its workings in the context of motivated, goal-directed, and environmentally constrained organisms. That attention is related to goal-directed behavior is not news. What the contri- tions to this volume do suggest, however, is the existence of fundamental links between attention and two key processes that are crucial for adapted conduct: go- directed behavior and cognitive control. Importantly, they show that these relations can be explored at multiple levels, including neurodynamical, neurochemical, evo- tionary, and clinical aspects, and that in doing so multiple methodological challenges arise that are worth considering and pursuing. The reader will find here, therefore, a selection of contributions that range from basic mechanisms of attention at the n- ronal level to developmental aspects of cognitive control and its impairments. Another trend that will become evident is that, in different ways, the authors stress the need to understand these issues as they unfold in natural behavior (both healthy and pathological), thus arguing for a more ecological approach to these questions.

Download or read book The Claustrum written by John R. Smythies and published by Academic Press. This book was released on 2013-11-11 with total page 408 pages. Available in PDF, EPUB and Kindle. Book excerpt: The present day is witnessing an explosion of our understanding of how the brain works at all levels, in which complexity is piled on complexity, and mechanisms of astonishing elegance are being continually discovered. This process is most developed in the major areas of the brain, such as the cortex, thalamus, and striatum. The Claustrum instead focuses on a small, remote, and, until recently, relatively unknown area of the brain. In recent years, researchers have come to believe that the claustrum is concerned with consciousness, a bold hypothesis supported by the claustrum’s two-way connections with nearly every other region of the brain and its seeming involvement with multisensory integrations—the hallmark of consciousness. The claustrum, previously in a humble position at the back of the stage, might in fact be the conductor of the brain’s orchestra. The Claustrum brings together leading experts on the claustrum from the varied disciplines of neuroscience, providing a state-of-the-art presentation of what is currently known about the claustrum, promising lines of current research (including epigenetics), and projections of new lines of investigation on the horizon. Develops a unifying hypothesis about the claustrum’s role in consciousness, as well as the integration of sensory information and other higher brain functions Discusses the involvement of the claustrum with autism, schizophrenia, epilepsy, Alzheimer’s disease, and Parkinson’s disease Coverage of all aspects of the claustrum, from its evolution and development to promising new lines of research, including epigenetics, provides a platform and point of reference for future investigative efforts

Download or read book Oral Sensation and Perception written by James F. Bosma and published by . This book was released on 1973 with total page 380 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Crossmodal Attention Applied written by Charles Spence and published by Cambridge University Press. This book was released on 2020-09-10 with total page 134 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cognitive neuroscientists have started to uncover the neural substrates, systems, and mechanisms enabling us to prioritize the processing of certain sensory information over other, currently less-relevant, inputs. However, there is still a large gap between the knowledge generated in the laboratory and its application to real-life problems of attention as when, for example, interface operators are multi-tasking. In this Element, laboratory studies on crossmodal attention (both behavioural/psychophysical and cognitive neuroscience) are situated within the applied context of driving. We contrast the often idiosyncratic conditions favoured by much of the laboratory research, typically using a few popular paradigms involving simplified experimental conditions, with the noisy, multisensory, real-world environments filled with complex, intrinsically-meaningful stimuli. By drawing attention to the differences between basic and applied studies in the context of driving, we highlight a number of important issues and neglected areas of research as far as the study of crossmodal attention is concerned.

Download or read book The Neuropsychology of Mental Illness written by Stephen J. Wood and published by Cambridge University Press. This book was released on 2009-10 with total page 465 pages. Available in PDF, EPUB and Kindle. Book excerpt: Describes neuropsychological approaches to the investigation, description, measurement and management of a wide range of mental illnesses.

Download or read book Attraction Distraction and Action written by Charles Folk and published by Elsevier. This book was released on 2001-11-30 with total page 413 pages. Available in PDF, EPUB and Kindle. Book excerpt: Over the last decade there has been a spate of research on the empirical phenomenon known as "attentional capture". Interest in capture can be attributed not only to its applied significance, but also to the implications of the phenomenon for theories of selective attention, as well as cognitive control in general. This growing interest, however, has also spawned a wide variety of experimental paradigms, empirical results, and theoretical perspectives. In June of 2000, 40 experimental psychologists converged on Villanova University for a conference and workshop on attentional capture. The intent was to provide an intimate forum for scientists from diverse perspectives and backgrounds, and using diverse methodologies to present their research on attentional capture and also engage in small group discussions on such key issues as the definition, measurement, and theoretical treatment of attention capture. This book presents a collection of chapters based on those presentations and discussions. Chapters are organized around areas such as neuroscience, visual cognition, developmental, individual differences and dynamical systems. The volume provides: a summary of the latest cutting edge research; an important compass for future research in this area; a useful survey of the field; contributions from internationally recognized experts in attention. Due to its exclusive focus on the topic of attentional capture the volume should make an excellent supplemental text or reference book for advanced undergraduate or graduate seminars in cognitive psychology and attention.

Download or read book Visual Mismatch Negativity vMMN a Prediction Error Signal in the Visual Modality written by Gabor Stefanics and published by Frontiers Media SA. This book was released on 2015-06-04 with total page 204 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Download or read book Converging Operations in the Study of Visual Selective Attention written by Arthur F. Kramer and published by Amer Psychological Assn. This book was released on 1996-01 with total page 545 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume represents the state of the art in research on visual selective attention, with a focus on the broad theme of converging operations. In 19 chapters, prominent scholars in the study of visual attention bring readers up to date on findings made possible over the past 15 years by new research methods and brain-imaging technologies. The first 5 chapters present a review and tutorial on the current issues of relevance to the study of visual selective attention, including specific research techniques and various theories, paradigms, and models. The remaining chapters provide cutting-edge research from multiple perspectives: behavioral studies, computational modeling, human research, and neural-imaging techniques. An examination of how disparate approaches from a variety of disciplines can be combined to provide an integrated view of visual selective attention is also presented. Converging Operations in the Study of Visual Selective Attention covers a broad scope of topics - inhibition, top-down and bottom-up control of attention, locus of selection, and representation - in reporting the range of research available from leaders in the field. In documenting these accomplishments, it sets the agenda for future studies.

Download or read book The Oxford Handbook of Attention written by Kia Nobre and published by Oxford University Press. This book was released on 2018 with total page 1260 pages. Available in PDF, EPUB and Kindle. Book excerpt: During the last three decades, there have been enormous advances in our understanding of the neural mechanisms of selective attention at the network as well as the cellular level. The Oxford Handbook of Attention brings together the different research areas that constitute contemporary attention research into one comprehensive and authoritative volume. In 40 chapters, it covers the most important aspects of attention research from the areas of cognitive psychology, neuropsychology, human and animal neuroscience, computational modelling, and philosophy. The book is divided into 4 main sections. Following an introduction from Michael Posner, the books starts by looking at theoretical models of attention. The next two sections are dedicated to spatial attention and non-spatial attention respectively. Within section 4, the authors consider the interactions between attention and other psychological domains. The last two sections focus on attention-related disorders, and finally, on computational models of attention. Aimed at both scholars and students, the Oxford Handbook of Attention provides a concise and state-of-the-art review of the current literature in this field.

Download or read book Attention and Memory written by Nelson Cowan and published by Oxford University Press. This book was released on 1998-01-15 with total page 342 pages. Available in PDF, EPUB and Kindle. Book excerpt: Attention and Memory brings together and assesses past and present research on information processing, to formulate a model of this entire system.

Download or read book Attention written by Addie Johnson and published by SAGE. This book was released on 2004 with total page 489 pages. Available in PDF, EPUB and Kindle. Book excerpt: Attention: Theory and Practice provides a balance between a readable overview of attention and an emphasis on how theories and paradigms for the study of attention have developed. The book highlights the important issues and major findings while giving sufficient details of experimental studies, models, and theories so that results and conclusions are easy to follow and evaluate. Rather than brushing over tricky technical details, the authors explain them clearly, giving readers the benefit of understanding the motivation for and techniques of the experiments in order to allow readers to think through results, models, and theories for themselves. Attention is an accessible text for advanced undergraduate and graduate students in psychology, as well as an important resource for researchers and practitioners interested in gaining an overview of the field of attention.

Download or read book Working Memory Capacity written by Nelson Cowan and published by Psychology Press. This book was released on 2016-04-14 with total page 238 pages. Available in PDF, EPUB and Kindle. Book excerpt: The idea of one's memory "filling up" is a humorous misconception of how memory in general is thought to work; it actually has no capacity limit. However, the idea of a "full brain" makes more sense with reference to working memory, which is the limited amount of information a person can hold temporarily in an especially accessible form for use in the completion of almost any challenging cognitive task. This groundbreaking book explains the evidence supporting Cowan's theoretical proposal about working memory capacity, and compares it to competing perspectives. Cognitive psychologists profoundly disagree on how working memory is limited: whether by the number of units that can be retained (and, if so, what kind of units and how many), the types of interfering material, the time that has elapsed, some combination of these mechanisms, or none of them. The book assesses these hypotheses and examines explanations of why capacity limits occur, including vivid biological, cognitive, and evolutionary accounts. The book concludes with a discussion of the practical importance of capacity limits in daily life. This 10th anniversary Classic Edition will continue to be accessible to a wide range of readers and serve as an invaluable reference for all memory researchers.

Download or read book Methods of Behavior Analysis in Neuroscience written by Jerry J. Buccafusco and published by CRC Press. This book was released on 2000-08-29 with total page 341 pages. Available in PDF, EPUB and Kindle. Book excerpt: Using the most well-studied behavioral analyses of animal subjects to promote a better understanding of the effects of disease and the effects of new therapeutic treatments on human cognition, Methods of Behavior Analysis in Neuroscience provides a reference manual for molecular and cellular research scientists in both academia and the pharmaceutic

Download or read book The Frequency Following Response written by Nina Kraus and published by Springer. This book was released on 2017-01-09 with total page 306 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume will cover a variety of topics, including child language development; hearing loss; listening in noise; statistical learning; poverty; auditory processing disorder; cochlear neuropathy; attention; and aging. It will appeal broadly to auditory scientists—and in fact, any scientist interested in the biology of human communication and learning. The range of the book highlights the interdisciplinary series of questions that are pursued using the auditory frequency-following response and will accordingly attract a wide and diverse readership, while remaining a lasting resource for the field.

Download or read book Neuroimaging in Developmental Clinical Neuroscience written by Judith M. Rumsey and published by Cambridge University Press. This book was released on 2009-02-19 with total page 473 pages. Available in PDF, EPUB and Kindle. Book excerpt: Modern neuroimaging offers tremendous opportunities for gaining insights into normative development and a wide array of developmental neuropsychiatric disorders. Focusing on ontogeny, this text covers basic processes involved in both healthy and atypical maturation, and also addresses the range of neuroimaging techniques most widely used for studying children. This book will enable you to understand normative structural and functional brain maturation and the mechanisms underlying basic developmental processes; become familiar with current knowledge and hypotheses concerning the neural bases of developmental neuropsychiatric disorders; and learn about neuroimaging techniques, including their unique strengths and limitations. Coverage includes normal developmental processes, atypical processing in developmental neuropsychiatric disorders, ethical issues, neuroimaging techniques and their integration with psychopharmacologic and molecular genetic research approaches, and future directions. This comprehensive volume is an essential resource for neurologists, neuropsychologists, psychiatrists, pediatricians, and radiologists concerned with normal development and developmental neuropsychiatric disorders.