Download or read book Interhemispheric Communication During Face Processing written by Lyndsay Baird and published by . This book was released on 2009 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: It is widely acknowledged that the cerebral hemispheres do not operate in isolation during the processing of complex visual stimuli. Patterns of interhemispheric communication are believed to be integral to cognitive abilities yet despite this, both the circumstances under which communication takes and the nature of the information that can be communicated remain relatively poorly understood. The experiments in this thesis address the nature of interhemispheric communication during the processing of face and identity information using a range of divided visual field paradigms. The first line of enquiry explored the nature of identity information that can be communicated interhemispherically. Specifically, the aim was to establish whether abstract identity driven collaboration could be achieved with stimuli denoting the same concept or if cross-hemispheric communication is restricted to more low-level, stimulus driven interactions. Further studies examined the impact of task difficulty on interhemispheric communication and whether dividing identity related cognitive processing between both hemispheres was more beneficial to performance than constraining to one. The main findings indicate that both conceptual identity information and superficial image characteristics can be communicated across the hemispheres for familiar but not unfamiliar faces. Results of enquiries into the benefits of dividing processing between the hemispheres were somewhat inconclusive leading to an exploration of the impact of capacity limits for face processing on the experimental paradigm. Evidence that interhemispheric communication may occur asymmetrically in the direction of right hemisphere to left hemisphere was also obtained. Findings are discussed within the context of existing literature and theories examining the processes of interhemispheric communication.
Download or read book Hemispheric Asymmetry and Interhemispheric Communication in Face Perception written by Galit Yovel and published by . This book was released on 2001 with total page 324 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Interhemispheric Dynamic Coordination in Face Processing written by Zhengang Lu and published by . This book was released on 2016 with total page 192 pages. Available in PDF, EPUB and Kindle. Book excerpt: Our conscious experience of the world is normally unified, coordinating different processes from the left and right hemispheres into one experience. However, the neural mechanisms underlying interhemispheric coordination remain poorly understood. A mechanistic approach to understanding interhemispheric coordination is “communication through coherence” (Fries, 2005; 2015). Using a recently developed time-resolved psychophysics (Fiebelkorn, Saalmann, & Kastner, 2013; Landau & Fries, 2012; Song, Meng, Chen, Zhou, & Luo, 2014), combined with fMRI decoding method, this thesis investigated the interhemispheric coordination through neural coherence, by focusing on a quintessential case of hemispheric lateralized brain function: face processing in the left and right fusiform face area (FFA). I observed coherent oscillatory fMRI multi-voxel patterns in the left and right FFA in two studies of different viewing contexts. In study 1, when interhemispheric coordination started from the dominant hemisphere, a coherent 44° phase difference between the left and right FFA in 3-4 Hz was observed; whereas when interhemispheric coordination started from the non-dominant hemisphere, a coherent -17° phase difference between the left and right FFA in 5.5-6.5 Hz was observed. These results suggest that different theta-frequency phase coherence might mediate the interhemispheric coordination of face perception, depending on whether the initiating hemisphere is dominant or non-dominant in face perception. Interestingly, in study 2, when an invalid spatial cue presented in the right view field, a coherent ~-2° phase difference between the left and right FFA at 12-13 Hz was observed, suggesting that the coordination between the left and right FFA could be tuned by attention mechanism to exhibit a different frequency-specific interhemispheric coordination, i.e., alpha-frequency band. Taken together, the findings in this thesis provide compelling new fMRI evidence for context-variant interhemispheric coordination mechanisms. The results in this thesis enhance our understanding of the underlying neural mechanism of interhemispheric coordination in the brain. The time-resolved fMRI decoding approach taken in this thesis may be a useful starting point for a more promising approach for future investigation in interhemispheric dynamic coordination with fine-grained anatomical and temporal resolution.
Download or read book Micro Meso and Macro Connectomics of the Brain written by Henry Kennedy and published by Springer. This book was released on 2016-03-10 with total page 173 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book has brought together leading investigators who work in the new arena of brain connectomics. This includes ‘macro-connectome’ efforts to comprehensively chart long-distance pathways and functional networks; ‘micro-connectome’ efforts to identify every neuron, axon, dendrite, synapse, and glial process within restricted brain regions; and ‘meso-connectome’ efforts to systematically map both local and long-distance connections using anatomical tracers. This book highlights cutting-edge methods that can accelerate progress in elucidating static ‘hard-wired’ circuits of the brain as well as dynamic interactions that are vital for brain function. The power of connectomic approaches in characterizing abnormal circuits in the many brain disorders that afflict humankind is considered. Experts in computational neuroscience and network theory provide perspectives needed for synthesizing across different scales in space and time. Altogether, this book provides an integrated view of the challenges and opportunities in deciphering brain circuits in health and disease.
Download or read book Hemispheric Communication written by Frederick L. Kitterle and published by Routledge. This book was released on 2020-02-10 with total page 389 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of this book is to provide a comprehensive overview of the way in which the two hemispheres of the brain interact. Some chapters address the nature of this interaction, the anatomical substrates that may account for greater or lesser hemispheric interaction, and the role of sex and handedness in hemispheric interaction. Others address the use of different experimental methods and clinical populations to understand the nature of hemispheric interaction. In addition to current research, this book also provides an important historical overview of the early research questions about hemispheric function and interaction that have helped to shape current views of and approaches to the study of brain function. Special coverage includes: * a comprehensive history of early research on cerebral laterality and hemispheric communication, including work by Pavlov; * a critical analysis of techniques and methologies to study hemispheric communication; * research on anatomical substrates which may underly functional differences between hemispheres and hemispheric communication; * implications of handedness for hemispheric communication; * research on individual differences in hemispheric function; * comprehensive research on sex and handedness from physiological, anatomical, and functional perspectives; and * attentional differences in hemispheric function.
Download or read book Facing the Other Novel Theories and Methods in Face Perception Research written by Davide Rivolta and published by Frontiers Media SA. This book was released on 2016-04-08 with total page 371 pages. Available in PDF, EPUB and Kindle. Book excerpt: We rely heavily on faces during social interactions. Humans possess the ability to recognise thousands of people very quickly and accurately without effort. The serious social difficulties that follow abnormalities of the face recognition system (i.e., prosopagnosia) strongly underline the importance of typical face skills in our everyday life. Over the last fifty years, research on prosopagnosia, along with research in the healthy population, has provided insights into the cognitive and neural features behind typical face recognition. This has also been achieved thanks to non-invasive neuroimaging techniques such as functional Magnetic Resonance Imaging (fMRI), Electroencephalography (EEG), Magnetoencephalography (MEG), Diffusion Tensor Imaging (DTI) and Transcranial Magnetic Stimulation (TMS). However, there is still much debate about the cognitive and neural mechanisms of face perception. In the current “Research Topic” we plan to gather experimental works, opinions, commentaries, mini-reviews and reviews that focus on new or novel theories and methods in face perception research. Where is the field at the moment? Do we need to re-think the experimental procedures we have adopted so far? Again, what kind of techniques (or combination of them) and analysis methods will be important in the future? From the experimental point of view we encourage both behavioural and neuroimaging contributions (e.g., fMRI, EEG, MEG, DTI and TMS). Despite the main emphasis on face perception, memory and identification, we will also consider original works that focus on other aspects of face processing, such as expression recognition, attractiveness judgments and face imagery. In addition, animal investigations and experimental manipulations that alter face recognition abilities in typical human subjects (e.g., hypnosis) are also welcome. Overall, we are proposing a Research Topic that looks at face processing using different perspectives and welcome contributions from different domains such as psychology, neurology, neuroscience, cognitive science and philosophy. The current “Research Topic” evolved over the desire to acknowledge the relatively recent loss of three giants in the field: Drs. Shlomo Bentin, Truett Allison and Andy Calder. We dedicate this “Research Topic” to them and their pioneering studies.
Download or read book The Development of Face Processing in Infancy and Early Childhood written by Olivier Pascalis and published by Nova Publishers. This book was released on 2003 with total page 238 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book on face perception is one of the most researched areas in infancy and early childhood, because of the enormous information that the face conveys to its viewer, both in terms of the recognition of individuals and in the expressive information that faces convey. It remains a complex area, but a number of theoretical issues have emerged which motivate much of the current research. This book describes many of these issues, and also presents some empirical research findings to illustrate the ways in which researchers carry out their investigations.
Download or read book Handbook of Research on Face Processing written by A.W. Young and published by Elsevier. This book was released on 2013-10-22 with total page 620 pages. Available in PDF, EPUB and Kindle. Book excerpt: The high degree of scientific interest in face processing is readily understandable, since people's faces provide such a wealth of social information. Moreover, investigations have produced evidence of highly precocious face processing abilities in infants, and of neural mechanisms in adults that seem to be differentially involved in face perception. Such findings demonstrate that, as one might expect, the psychological importance of the face has clear biological underpinnings.There are also urgent practical reasons for wanting to understand face processing. The most extensively investigated of these involve forensic issues. Other applications include the development of automated recognition systems for security and other purposes, and understanding and rehabilitating disorders and impairments linked to brain injuries and psychiatric conditions.Current studies of face processing are grouped in the volume into eleven topic areas. For each area, the editors approached an acknowledged authority and commissioned a review chapter summarising the findings that have been made. These chapters were then circulated to other experts who were asked to write brief commentaries that developed theoretical or empirical points of importance to each area. In this way, a balanced coverage of each topic is achieved.The book begins with a section examining the evidence suggesting that there may be something `special' about face processing. This is followed by consideration of the face as a visual pattern. Then there are four sections dealing with major uses of facial information, followed by sections discussing the development of face processing abilities and the neural mechanisms involved. The last three sections of the book deal with topics for which there are important practical applications for the studies reported.
Download or read book Developmental Neurocognition written by B. De Boysson-Bardies and published by Springer Science & Business Media. This book was released on 2013-03-09 with total page 744 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume contains the proceedings of a NATO Advanced Research Workshop (ARW) on the topic of "Changes in Speech and Face Processing in Infancy: A glimpse at Developmental Mechanisms of Cognition", which was held in Carry-Ie-Rouet (France) at the Vacanciel "La Calanque", from June 29 to July 3, 1992. For many years, developmental researchers have been systematically exploring what is concealed by the blooming and buzzing confusion (as William James described the infant's world). Much research has been carried out on the mechanisms by which organisms recognize and relate to their conspecifics, in particular with respect to language acquisition and face recognition. Given this background, it seems worthwhile to compare not only the conceptual advances made in these two domains, but also the methodological difficulties faced in each of them. In both domains, there is evidence of sophisticated abilities right from birth. Similarly, researchers in these domains have focused on whether the mechanisms underlying these early competences are modality-specific, object specific or otherwise.
Download or read book Oxford Handbook of Face Perception written by Andy Calder and published by OUP Oxford. This book was released on 2011-07-28 with total page 944 pages. Available in PDF, EPUB and Kindle. Book excerpt: The human face is unique among social stimuli in conveying such a variety of different characteristics. A person's identity, sex, race, age, emotional state, focus of attention, facial speech patterns, and attractiveness are all detected and interpreted with relative ease from the face. Humans also display a surprising degree of consistency in the extent to which personality traits, such as trustworthiness and likeability, are attributed to faces. In the past thirty years, face perception has become an area of major interest within psychology, with a rapidly expanding research base. Yet until now, there has been no comprehensive reference work bringing together this ever growing body of research. The Oxford Handbook of Face Perception is the most comprehensive and commanding review of the field ever published. It looks at the functional and neural mechanisms underlying the perception, representation, and interpretation of facial characteristics, such as identity, expression, eye gaze, attractiveness, personality, and race. It examines the development of these processes, their neural correlates in both human and non-human primates, congenital and acquired disorders resulting from their breakdown, and the theoretical and computational frameworks for their underlying mechanisms. With chapters by an international team of leading authorities from the brain sciences, the book is a landmark publication on face perception. For anyone looking for the definitive text on this burgeoning field, this is the essential book.
Download or read book Hemispheric Interaction in Face Processing written by Steven Matthew John Hunt and published by . This book was released on 1997 with total page 408 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Psychology of Left and Right written by Michael C. Corballis and published by Routledge. This book was released on 2020-09-10 with total page 259 pages. Available in PDF, EPUB and Kindle. Book excerpt: Originally published in 1976, this title deals with the problem of how we tell left from right. The authors argue that the ability to tell left from right depends ultimately on a bodily asymmetry, such as preference for one or the other hand, or dominance of one side of the brain. This has implications for child development, reading disability, navigation, art, and culture.
Download or read book The Brain and Behavior written by David L. Clark and published by Cambridge University Press. This book was released on 2005-09-08 with total page 290 pages. Available in PDF, EPUB and Kindle. Book excerpt: New edition building on the success of previous one. Retains core aim of providing an accessible introduction to behavioral neuroanatomy.
Download or read book Early Child Development in the French Tradition written by Andre Vyt and published by Psychology Press. This book was released on 2013-05-13 with total page 386 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume shares significant contemporary "Francophone" contributions to developmental psychology outside geographic and intellectual borders of French-speaking countries. Except for the spread of Piagetian theory after World War II into Anglophone psychology, these new publications have not become so well known worldwide as progress in Francophone developmental psychology warrants. However, the work of a new generation of developmental theorists and experimentalists continues to shape important and original lines of thinking and research in France, Canada, and in other French-speaking countries. This work also contributes uniquely to issues such as sensori-motor development, perception, language acquisition, social interaction, and the growth and induction of cognitive mechanisms. Scientific concepts are not only embedded in a paradigm, but also in a culture and a language. Instead of writing about Francophone developmental psychology from "outside," this volume brings together original English-language contributions written by researchers working in different Francophone countries. Chapters summarize and interpret research on a given topic, making explicit the context of philosophical and theoretical traditions in which the empirical advances are embedded. Original essays are accompanied by editorial commentaries from eminent scientists working on the same topics in other parts of the world -- topics that are closely related to Francophone streams of thought and themes of study. Together, these essays fully and faithfully represent modern scientific perspectives toward understanding many facets of mental growth and development of the young child.
Download or read book A Unified Hypothesis of Visual Asymmetry Interhemispheric Communication and Their Typical Development in Humans written by Benjamin N. Cipollini and published by . This book was released on 2014 with total page 230 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lateralization is a part of virtually every function we think makes us human, yet there is no integrated neurophysiological explanation of the development of lateralization and interhemispheric integration. In this thesis I propose how development, lateralization in visual processing, and interhemispheric connectivity are all intertwined. I begin with evidence from neurocomputational modeling that lateralization in visual processing can be accounted for by a difference in the length of long-range lateral connections brought on by typical human developmental processes. The model can explain processing asymmetries for low vs. high spatial frequencies, local vs. global stimuli, as well as the right hemisphere lateralization of faces. Next, I show modeling evidence against the prevailing hypothesis that lateralization and interhemispheric communication are both functions of brain size. Previous papers have argued that lateralization is related to hemispheric independence which increases with brain size, due to both longer latency and proportionally fewer interhemispheric connections in larger brains. I examine interhemispheric connectivity across species using a new allometric analysis of existing data and examine latency effects through a re-analysis of neural network modeling data. Both results suggest that inter- hemispheric communication is robust across brain sizes. Along the way, I examine the neurophysiological development of long-range connections. I use neural network modeling to show that developmental changes in the physiology of axons may bias learning towards more local intrahemispheric circuits early in development, with long distance interhemispheric circuits becoming more prominent as connections mature. These modeling results are broadly consistent with the develop- mental trajectory of both interhemispheric communication and lateralization. I conclude by attempting to integrate these results into existing theories of developmental and adult visual lateralization. In many domains, communication is the key to the development of specialization. I hope this work can refocus our efforts to understand how interhemispheric communication affects the development of each lateralized function in the brain and treat any relationships between hemispheric independence and lateralization as an unexpected special case worth investigating further.
Download or read book Face Processing written by Graham Hole and published by Oxford University Press, USA. This book was released on 2010-06-17 with total page 432 pages. Available in PDF, EPUB and Kindle. Book excerpt: 'Face Processing' seeks to answer questions such as how we recognise familiar faces, and which factors determine facial attractiveness. Drawing on a wealth of studies and research, it is an essential companion for undergraduates studying face processing as part of a psychology degree.
Download or read book Hemispheric Asymmetry written by Joseph B. Hellige and published by Harvard University Press. This book was released on 2001 with total page 418 pages. Available in PDF, EPUB and Kindle. Book excerpt: Is "right-brain" thought essentially creative, and "left-brain" strictly logical? Joseph B. Hellige argues that this view is far too simplistic. Surveying extensive data in the field of cognitive science, he disentangles scientific facts from popular assumptions about the brain's two hemispheres. In Hemispheric Asymmetry, Hellige explains that the "right brain" and "left brain" are actually components of a much larger cognitive system encompassing cortical and subcortical structures, all of which interact to produce unity of thought and action. He further explores questions of whether hemispheric asymmetry is unique to humans, and how it might have evolved. This book is a valuable overview of hemispheric asymmetry and its evolutionary precedents.
