Multisensory Perception


Book Description

Multisensory Perception: From Laboratory to Clinic surveys the current state of knowledge on multisensory processes, synthesizing information from diverse streams of research and defining hypotheses and questions to direct future work. Reflecting the nature of the field, the book is interdisciplinary, comprising the findings and views of writers with diverse backgrounds and varied methods, including psychophysical, neuroanatomical, neurophysiological and neuroimaging approaches. Sections cover basic principles, specific interactions between the senses, the topic of crossmodal correspondences between particular sensory attributes, the related topic of synesthesia, and the clinic. - Offers a comprehensive, up-to-date overview of the current state of knowledge on multisensory processes - Coverage includes basic principles, specific interactions between the senses, crossmodal correspondences and the clinical aspects of multisensory processes - Includes psychophysical, neuroanatomical, neurophysiological and neuroimaging approaches







Psychophysiological Measurement and Meaning


Book Description

This research volume serves as a comprehensive resource for psychophysiological research on media responses. It addresses the theoretical underpinnings, methodological techniques, and most recent research in this area. It goes beyond current volumes by placing the research techniques within a context of communication processes and effects as a field, and demonstrating how the real-time measurement of physiological responses enhances and complements more traditional measures of psychological effects from media. This volume introduces readers to the theoretical assumptions of psychophysiology as well as the operational details of collecting psychophysiological data. In addition to discussing specific measures, it includes brief reviews of recent experiments that have used psychophysiological measures to study how the brain processes media. It will serve as a valuable reference for media researchers utilizing these methodologies, or for other researchers needing to understand the theories, history, and methods of psychophysiological research.




Multisensory Integration: Brain, Body and the World


Book Description

Behavioral, language, and reasoning are expressions of neural functions par excellence, as the brain must draw on sensory modalities to gather information on the rest of the body and on the outer world. Cortical areas processing the identity and location of the sensory inputs were once thought to be organized, with some branches dedicated to complex features. Yet current studies have uncovered synergistic effects at early-stage cognitions as well as higher-level association areas. A less hierarchical functional architecture of the brain has emerged such that, irrespective of sensory modality, inputs are assigned to the best suited cortical substrate.




Audiovisual Speech Processing


Book Description

This book presents a complete overview of all aspects of audiovisual speech including perception, production, brain processing and technology.




Perceptual Learning


Book Description

Perceptual learning is the specific and relatively permanent modification of perception and behaviour following sensory experience. This book presents advances made during the 1990s in this rapidly growing field.




Speechreading by Humans and Machines


Book Description

This book is one outcome of the NATO Advanced Studies Institute (ASI) Workshop, "Speechreading by Man and Machine," held at the Chateau de Bonas, Castera-Verduzan (near Auch, France) from August 28 to Septem ber 8, 1995 - the first interdisciplinary meeting devoted the subject of speechreading ("lipreading"). The forty-five attendees from twelve countries covered the gamut of speechreading research, from brain scans of humans processing bi-modal stimuli, to psychophysical experiments and illusions, to statistics of comprehension by the normal and deaf communities, to models of human perception, to computer vision and learning algorithms and hardware for automated speechreading machines. The first week focussed on speechreading by humans, the second week by machines, a general organization that is preserved in this volume. After the in evitable difficulties in clarifying language and terminology across disciplines as diverse as human neurophysiology, audiology, psychology, electrical en gineering, mathematics, and computer science, the participants engaged in lively discussion and debate. We think it is fair to say that there was an atmosphere of excitement and optimism for a field that is both fascinating and potentially lucrative. Of the many general results that can be taken from the workshop, two of the key ones are these: • The ways in which humans employ visual image for speech recogni tion are manifold and complex, and depend upon the talker-perceiver pair, severity and age of onset of any hearing loss, whether the topic of conversation is known or unknown, the level of noise, and so forth.




Advances in Brain Imaging


Book Description

Brain imaging and its application to major psychiatric disorders such as depression, obsessive-compulsive disorder (OCD), and schizophrenia is one of the most exciting fields in psychiatry today. This thought-provoking collection details the work of five scientists who report some of the most recent findings in the field, review the relevant data in the literature, and place this research within a critical neuroscience context. Each chapter tells a fascinating story: Chapter 1, Functional Brain Imaging in Psychiatry: The Next Wave, reviews the strengths and limitations of functional magnetic resonance imaging (fMRI), emphasizes the therapeutic implications of brain imaging findings, and suggests that this field may achieve its greatest utility in the search for the genetic bases for psychiatric disorders such as schizophrenia. Chapter 2, Cognitive Neuroscience: The New Neuroscience of the Mind and Its Implications for Psychiatry, emphasizes the importance of cognitive deficits in our understanding of psychiatric disorders such as schizophrenia and OCD, presenting an exciting discussion of the development of a theory of altered executive function. Chapter 3, Functional Magnetic Resonance Imaging in Children and Adolescents: Implications for Research on Emotion, explains a compelling new way of using fMRI to investigate disorders of emotion (such as major depression, generalized anxiety disorder, separation anxiety disorder, and social phobia) in children, synthesizing neuroscience, psychiatry, and developmental psychology. Chapter 4, Brain Structure and Function in Late-Life Depression, presents both structural and functional brain imaging findings, such as decreased brain volume and abnormalities of regional cerebral blood flow, in patients with late-life depression, examining how they compare with younger patients with major depression and raising an intriguing question of trait versus state as the cause for some of these abnormalities. Chapter 5, Neuroimaging Studies of Major Depression, details a distinctive longitudinal and intensely multimodal neuroscience approach particularly well suited for brain studies, describing not only the abnormalities, but also the changes in these abnormalities after therapeutic intervention, showing that some appear to depend on the patient's mood and that other neurophysiologic differences persist even after treatment. The provocative research breakthroughs and findings presented in this volume may lead to important insights in diagnosis, treatment response, and prognosis for some of today's most challenging psychiatric disorders. Researchers and clinicians alike will find that this remarkable volume enhances their understanding of the theory and practice of brain imaging in psychiatry and offers an exciting glimpse of the future directions of both the technology and the science.