Download Manual Asymmetries Handedness And Motor Performance full books in PDF, epub, and Kindle. Read online Manual Asymmetries Handedness And Motor Performance ebook anywhere anytime directly on your device. Fast Download speed and no annoying ads. We cannot guarantee that every ebooks is available!
"Manual asymmetries" refers to differences in performance capabilities of the two hands. Humans may be the only species that show a consistent preference for the right hand.
Book Synopsis Manual Asymmetries in Motor Performance by : Digby Elliott
Download or read book Manual Asymmetries in Motor Performance written by Digby Elliott and published by CRC Press. This book was released on 1996-06-06 with total page 280 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Manual asymmetries" refers to differences in performance capabilities of the two hands. Humans may be the only species that show a consistent preference for the right hand.
The performance of most tasks with one hand, typically the right, is a uniquely human characteristic. Not only do people prefer to use one hand rather than the other, but also they usually perform tasks faster and more accurately with this hand. The study of manual asymmetries and what such performance differences between the two hands reveal about brain organization and motor function has been a topic of considerable research over the last several decades. The aim of this Research Topic is to review and further explore the origins of manual asymmetries and their relationship to handedness, unimanual and bimanual motor performance, and brain function. The articles included here involve original research conducted in humans or non-human models species, as well as theoretical perspectives, review articles, and meta-analyses.
Book Synopsis Manual Asymmetries, Handedness and Motor Performance by : Pamela Bryden
Download or read book Manual Asymmetries, Handedness and Motor Performance written by Pamela Bryden and published by Frontiers Media SA. This book was released on 2016-06-10 with total page 149 pages. Available in PDF, EPUB and Kindle. Book excerpt: The performance of most tasks with one hand, typically the right, is a uniquely human characteristic. Not only do people prefer to use one hand rather than the other, but also they usually perform tasks faster and more accurately with this hand. The study of manual asymmetries and what such performance differences between the two hands reveal about brain organization and motor function has been a topic of considerable research over the last several decades. The aim of this Research Topic is to review and further explore the origins of manual asymmetries and their relationship to handedness, unimanual and bimanual motor performance, and brain function. The articles included here involve original research conducted in humans or non-human models species, as well as theoretical perspectives, review articles, and meta-analyses.
Book Synopsis Hand Asymmetries in Grasp Duration and Reaching in Two- and Five-month-old Human Infants by : Patricia Ruis Hawn
Download or read book Hand Asymmetries in Grasp Duration and Reaching in Two- and Five-month-old Human Infants written by Patricia Ruis Hawn and published by . This book was released on 1978 with total page 228 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Left-Handedness and Brain Asymmetries by : Sebastian Ocklenburg
Download or read book Left-Handedness and Brain Asymmetries written by Sebastian Ocklenburg and published by Springer Nature. This book was released on with total page 43 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Brain asymmetry for speech is moderately related to handedness but what are the rules? Are symmetries for hand and brain associated with characteristics such as intelligence, motor skill, spatial reasoning or skill at sports? In this follow up to the influential Left, Right Hand and Brain (1985) Marian Annett draws on a working lifetime of research to help provide answers to crucial questions. Central to her argument is the Right Shift Theory - her original and innovative contribution to the field that seeks to explain the relationships between left-and right-handedness and left-and right-brain specialisation. The theory proposes that handedness in humans and our non-human primate relations depends on chance but that chance is weighted towards right-handedness in most people by an agent of right-hemisphere disadvantage. It argues for the existence of a single gene for right shift (RS+) that evolved in humans to aid the growth of speech in the left hemisphere of the brain. The Right Shift Theory has possible implications for a wide range of questions about human abilities and disabilities, including verbal and non verbal intelligence, educational progress and dyslexia, spatial reasoning, sporting skills and mental illness. It continues to be at the cutting edge of research, solving problems and generating new avenues of investigation - most recently the surprising idea that a mutant RS+ gene might be involved in the causes of schizophrenia and autism. Handedness and Brain Asymmetry will make fascinating reading for students and researchers in psychology and neurology, educationalists, and anyone with a keen interest in why people have different talents and weaknesses.
Book Synopsis Handedness and Brain Asymmetry by : Marian Annett
Download or read book Handedness and Brain Asymmetry written by Marian Annett and published by Psychology Press. This book was released on 2013-04-15 with total page 422 pages. Available in PDF, EPUB and Kindle. Book excerpt: Brain asymmetry for speech is moderately related to handedness but what are the rules? Are symmetries for hand and brain associated with characteristics such as intelligence, motor skill, spatial reasoning or skill at sports? In this follow up to the influential Left, Right Hand and Brain (1985) Marian Annett draws on a working lifetime of research to help provide answers to crucial questions. Central to her argument is the Right Shift Theory - her original and innovative contribution to the field that seeks to explain the relationships between left-and right-handedness and left-and right-brain specialisation. The theory proposes that handedness in humans and our non-human primate relations depends on chance but that chance is weighted towards right-handedness in most people by an agent of right-hemisphere disadvantage. It argues for the existence of a single gene for right shift (RS+) that evolved in humans to aid the growth of speech in the left hemisphere of the brain. The Right Shift Theory has possible implications for a wide range of questions about human abilities and disabilities, including verbal and non verbal intelligence, educational progress and dyslexia, spatial reasoning, sporting skills and mental illness. It continues to be at the cutting edge of research, solving problems and generating new avenues of investigation - most recently the surprising idea that a mutant RS+ gene might be involved in the causes of schizophrenia and autism. Handedness and Brain Asymmetry will make fascinating reading for students and researchers in psychology and neurology, educationalists, and anyone with a keen interest in why people have different talents and weaknesses.
In this dissertation, three experiments were conducted that examined the influence of task demands on manual asymmetries for the performance of reaching movements to tools. In all three experiments, the difference between the hands (in terms of preference for Experiment 1 and performance for Experiments 2 and 3) was studied in response to varying task demands for grasping movements to tools. In the first experiment, 82 right-handed and 60 left-handed university students performed reaching movements to tools and dowels at five positions within working space. Differences in the reaching patterns of the left and right hands to the tools and dowels were examined, as well as the effect of task demands (lift, use) and type of object (tool, dowel) on the reaching patterns. Dowels were used in order to examine if participants would treat a neutral object as if it were a tool in terms of their reaching patterns in working space. Results confirmed and extended prior research on the influence of task demands on reaching patterns within working space. Overall, there were more similarities in the general reaching patterns of left- and right-handed participants than differences. However key differences between the handedness groups emerged in the treatment of the dowel and the frequency of switches (reaching to lift the object with the non-preferred hand and transferring it to the preferred hand to use). Results also showed that tools enjoy a privileged association with the preferred hand, and that the intent of the movement has a very real goal on movement planning. The first experiment examined patterns of hand use across working space in response to differing task demands. In the next experiments performance differences between the hands in terms of movement planning and initiation were examined through the use of reaction time and movement time. In these experiments, reaction time represented the time from the presentation of a go signal to when the participant first lifted their hand, and movement time was the time between lifting the hand to lifting a tool off a sensor. Movement time represented the time to pick up the tool, and did not include the time to use the tool to perform a particular task and complete the reaching movement. In the second experiment, reaction time and movement time to tools placed at the midline position were examined under varying degrees of advance information using a precue paradigm. Three precue conditions were used which presented advance information on the hand to use to perform the movement (left or right) and/or the task (lift, use, or pantomime) to be performed: (1) both hand and task were cued in advance (Both precue); (2) task only was cued in advance (Task precue); and (3) neither hand nor task were cued in advance (No precue). Twenty-four right-handed university students performed reaching movements to tools under the three different precue conditions. The results of Experiment 2 showed that reaction time was sensitive to the amount of advance information presented in the precue. For reaction time manual asymmetries were observed in one condition only - a right hand advantage was present in the No precue condition. In contrast manual asymmetries in favor of the right hand were clearly observed with the movement time results. Experiment 2 was the first experiment reported in the literature to systematically examine reaction time for reaching and grasping movements to tools. In order to further explore these results, in Experiment 3 a fourth precue condition (in which the hand to be used was cued in advance; the Hand precue) was added to the precue paradigm used in Experiment 2. An additional variable called replacement time, which represented the time spent interacting with the tool, was also examined. Forty-two right-handed university students participated in Experiment 3. The results of Experiment 3 largely replicated the findings of Experiment 2, and indicated that both the amount and type of precue information had an effect on reaction time. The addition of the Hand precue condition suggested that having advance knowledge of the hand to be used to perform the task was of greater importance for movement planning than was advance knowledge of the task to be performed. Regarding the movement time results, Experiment 3 was one of the first experiments to show the influence of task demands on the magnitude of manual asymmetries. The lack of differences between the hands for the replacement time results also suggested that the initial execution of the movement (represented by movement time) was most sensitive to manual asymmetries. Overall, these experiments provided further insight into manual asymmetries for the performance of reaching movements, and illustrated how simple manipulations of task demands led to differences between the hands in measures of both preference and performance when interacting with tools.
Book Synopsis The Influence of Task Demands on Manual Asymmetries for Reaching Movements to Tools by : Carla Marie Mamolo
Download or read book The Influence of Task Demands on Manual Asymmetries for Reaching Movements to Tools written by Carla Marie Mamolo and published by . This book was released on 2008 with total page 181 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this dissertation, three experiments were conducted that examined the influence of task demands on manual asymmetries for the performance of reaching movements to tools. In all three experiments, the difference between the hands (in terms of preference for Experiment 1 and performance for Experiments 2 and 3) was studied in response to varying task demands for grasping movements to tools. In the first experiment, 82 right-handed and 60 left-handed university students performed reaching movements to tools and dowels at five positions within working space. Differences in the reaching patterns of the left and right hands to the tools and dowels were examined, as well as the effect of task demands (lift, use) and type of object (tool, dowel) on the reaching patterns. Dowels were used in order to examine if participants would treat a neutral object as if it were a tool in terms of their reaching patterns in working space. Results confirmed and extended prior research on the influence of task demands on reaching patterns within working space. Overall, there were more similarities in the general reaching patterns of left- and right-handed participants than differences. However key differences between the handedness groups emerged in the treatment of the dowel and the frequency of switches (reaching to lift the object with the non-preferred hand and transferring it to the preferred hand to use). Results also showed that tools enjoy a privileged association with the preferred hand, and that the intent of the movement has a very real goal on movement planning. The first experiment examined patterns of hand use across working space in response to differing task demands. In the next experiments performance differences between the hands in terms of movement planning and initiation were examined through the use of reaction time and movement time. In these experiments, reaction time represented the time from the presentation of a go signal to when the participant first lifted their hand, and movement time was the time between lifting the hand to lifting a tool off a sensor. Movement time represented the time to pick up the tool, and did not include the time to use the tool to perform a particular task and complete the reaching movement. In the second experiment, reaction time and movement time to tools placed at the midline position were examined under varying degrees of advance information using a precue paradigm. Three precue conditions were used which presented advance information on the hand to use to perform the movement (left or right) and/or the task (lift, use, or pantomime) to be performed: (1) both hand and task were cued in advance (Both precue); (2) task only was cued in advance (Task precue); and (3) neither hand nor task were cued in advance (No precue). Twenty-four right-handed university students performed reaching movements to tools under the three different precue conditions. The results of Experiment 2 showed that reaction time was sensitive to the amount of advance information presented in the precue. For reaction time manual asymmetries were observed in one condition only - a right hand advantage was present in the No precue condition. In contrast manual asymmetries in favor of the right hand were clearly observed with the movement time results. Experiment 2 was the first experiment reported in the literature to systematically examine reaction time for reaching and grasping movements to tools. In order to further explore these results, in Experiment 3 a fourth precue condition (in which the hand to be used was cued in advance; the Hand precue) was added to the precue paradigm used in Experiment 2. An additional variable called replacement time, which represented the time spent interacting with the tool, was also examined. Forty-two right-handed university students participated in Experiment 3. The results of Experiment 3 largely replicated the findings of Experiment 2, and indicated that both the amount and type of precue information had an effect on reaction time. The addition of the Hand precue condition suggested that having advance knowledge of the hand to be used to perform the task was of greater importance for movement planning than was advance knowledge of the task to be performed. Regarding the movement time results, Experiment 3 was one of the first experiments to show the influence of task demands on the magnitude of manual asymmetries. The lack of differences between the hands for the replacement time results also suggested that the initial execution of the movement (represented by movement time) was most sensitive to manual asymmetries. Overall, these experiments provided further insight into manual asymmetries for the performance of reaching movements, and illustrated how simple manipulations of task demands led to differences between the hands in measures of both preference and performance when interacting with tools.
This comprehensive resource and clinical guide for students and practicing pediatric therapists features current information on the neurological foundations of hand skills, the development of hand skills, and intervention with children who have problems related to hand skills. Covers foundation and development of hand skills, therapeutic intervention, and special problems and approaches. Is readable, concise, and well-organized with a consistent format throughout. Integrates recent research findings and current thinking throughout the text. Emphasizes neuroscience and the hand's sensory function and haptic perception. Applies neuroscience and development frames of reference throughout. Implications for practice included in each chapter. Presents concepts in the foundation/development chapters that are linked with the intervention chapters. Seven new chapters reflect current practice in the field and cover cognition & motor skills, handedness, fine-motor program for preschoolers, handwriting evaluation, splinting the upper extremity of the child, pediatric hand therapy, and efficacy of interventions. Extensively revised content throughout includes new research and theories, new techniques, current trends, and new information sources. 9 new contributors offer authoritative guidance in the field. Over 200 new illustrations demonstrate important concepts with new clinical photographs and line drawings. Over 50 new tables and boxes highlight important information. An updated and expanded glossary defines key terms.
Book Synopsis Hand Function in the Child by : Anne Henderson, PhD, OTR
Download or read book Hand Function in the Child written by Anne Henderson, PhD, OTR and published by Elsevier Health Sciences. This book was released on 2005-09-29 with total page 492 pages. Available in PDF, EPUB and Kindle. Book excerpt: This comprehensive resource and clinical guide for students and practicing pediatric therapists features current information on the neurological foundations of hand skills, the development of hand skills, and intervention with children who have problems related to hand skills. Covers foundation and development of hand skills, therapeutic intervention, and special problems and approaches. Is readable, concise, and well-organized with a consistent format throughout. Integrates recent research findings and current thinking throughout the text. Emphasizes neuroscience and the hand's sensory function and haptic perception. Applies neuroscience and development frames of reference throughout. Implications for practice included in each chapter. Presents concepts in the foundation/development chapters that are linked with the intervention chapters. Seven new chapters reflect current practice in the field and cover cognition & motor skills, handedness, fine-motor program for preschoolers, handwriting evaluation, splinting the upper extremity of the child, pediatric hand therapy, and efficacy of interventions. Extensively revised content throughout includes new research and theories, new techniques, current trends, and new information sources. 9 new contributors offer authoritative guidance in the field. Over 200 new illustrations demonstrate important concepts with new clinical photographs and line drawings. Over 50 new tables and boxes highlight important information. An updated and expanded glossary defines key terms.
Whereas the cerebral specialization for skilled manual actions (praxis) seems closely linked to dominance for language, with both functions left lateralized in the vast majority of humans, the neural correlates of hand preference are still less well understood. Indeed, as a combination of inherited and non-inherited genomic factors (i.e., direct parental and concealed environmental contributions), handedness – in contrast to language – is less likely to have strong genetic indices and clearly lateralized functional organization. What about eye dominance, unimanual and bimanual object manipulation, and gestures, or attentional systems and the related egocentric or allocentric coding of space? Are these different categories functionally and structurally interconnected? Is their development and contribution to task performance linked, even if they are differently lateralized? How are they connected to language learning or its development? In trying to understand these relationships and their neural underpinnings we obtain a new insight into fundamental human behaviors, which depend either on shared or distinct cerebral resources that must, nevertheless, be harmonized by higher-order cerebral processing. In this Research Topic we assembled a dozen of original research contributions, as well as articles with more theoretically-driven perspectives, that directly speak to these issues. Hopefully this work will serve as a foundation for further discussions and will stimulate new research in this fascinating domain.
Book Synopsis Manual Skills, Handedness, and the Organization of Language in the Brain by : Gregory Króliczak
Download or read book Manual Skills, Handedness, and the Organization of Language in the Brain written by Gregory Króliczak and published by Frontiers Media SA. This book was released on 2019-08-15 with total page 163 pages. Available in PDF, EPUB and Kindle. Book excerpt: Whereas the cerebral specialization for skilled manual actions (praxis) seems closely linked to dominance for language, with both functions left lateralized in the vast majority of humans, the neural correlates of hand preference are still less well understood. Indeed, as a combination of inherited and non-inherited genomic factors (i.e., direct parental and concealed environmental contributions), handedness – in contrast to language – is less likely to have strong genetic indices and clearly lateralized functional organization. What about eye dominance, unimanual and bimanual object manipulation, and gestures, or attentional systems and the related egocentric or allocentric coding of space? Are these different categories functionally and structurally interconnected? Is their development and contribution to task performance linked, even if they are differently lateralized? How are they connected to language learning or its development? In trying to understand these relationships and their neural underpinnings we obtain a new insight into fundamental human behaviors, which depend either on shared or distinct cerebral resources that must, nevertheless, be harmonized by higher-order cerebral processing. In this Research Topic we assembled a dozen of original research contributions, as well as articles with more theoretically-driven perspectives, that directly speak to these issues. Hopefully this work will serve as a foundation for further discussions and will stimulate new research in this fascinating domain.
Cerebral Lateralization and Cognition: Evolutionary and Developmental Investigations of Motor Biases, Volume 238, the latest release in the Progress in Brain Research series, discusses interdisciplinary research on the influence of cerebral lateralization on cognition within an evolutionary framework. Chapters of note in this release include Evolutionary Perspectives: Visual/Motor Biases and Cognition, Manual laterality and cognition through evolution: An archeological perspective, Laterality in insects, Motor asymmetries in fish, amphibians and reptiles, Visual biases and social cognition in animals, Mother and offspring lateralized social interaction across animal species, Manual bias, personality and cognition in common marmosets and other primates, and more. Presents investigations of cognitive development in an evolutionary framework Provides a better understanding of the causal relationship between motor function and brain organization Brings clinicians and neuroscientists together to consider the relevance of motor biases as behavioral biomarkers of cognitive disorders Includes future possibilities for early detection and motor intervention therapies
Book Synopsis Cerebral Lateralization and Cognition: Evolutionary and Developmental Investigations of Behavioral Biases by :
Download or read book Cerebral Lateralization and Cognition: Evolutionary and Developmental Investigations of Behavioral Biases written by and published by Academic Press. This book was released on 2018-08-07 with total page 457 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cerebral Lateralization and Cognition: Evolutionary and Developmental Investigations of Motor Biases, Volume 238, the latest release in the Progress in Brain Research series, discusses interdisciplinary research on the influence of cerebral lateralization on cognition within an evolutionary framework. Chapters of note in this release include Evolutionary Perspectives: Visual/Motor Biases and Cognition, Manual laterality and cognition through evolution: An archeological perspective, Laterality in insects, Motor asymmetries in fish, amphibians and reptiles, Visual biases and social cognition in animals, Mother and offspring lateralized social interaction across animal species, Manual bias, personality and cognition in common marmosets and other primates, and more. Presents investigations of cognitive development in an evolutionary framework Provides a better understanding of the causal relationship between motor function and brain organization Brings clinicians and neuroscientists together to consider the relevance of motor biases as behavioral biomarkers of cognitive disorders Includes future possibilities for early detection and motor intervention therapies
Functional cerebral specialization is a phenomenon of considerable relevance not only to those investigating normal brain function, but also to scientists who study and treat clinical populations. This special issue of "Laterality" brings together contributions from researchers studying human populations and those using animal models, and includes a discussion of the important issues in the field of lateralization of function. The papers address the origins of laterality and the nature of lateralized functions in various species, as well as relations among the different forms of lateralization. Included are such topics as lateralized memory processes, early experiential effects on laterality, the genetic basis of handedness, perceptual processing in the haptic or visual domain, and learning. Comparisons between human and non-human primate findings and the implications of these findings for our understanding of the phylogenetic basis of hemispheric specialization are also emphasized.; The papers are based on presentations at two symposia that took place in August 1996: "Issues in Laterality", held at the International Congress of Psychology in Montreal; and "Laterality and Hemispheric Specialization in Primates: Brain Behavior and Evolution", held at the University of Wisconsin, Madison, at the joint meetings of the "XVI Congress of the International Primatological Society" and the "XIX Conference of the American Society of Primatologists".
Book Synopsis Hemispheric Specialisation in Animals and Humans by : Joël Fagot
Download or read book Hemispheric Specialisation in Animals and Humans written by Joël Fagot and published by Psychology Press. This book was released on 1997 with total page 172 pages. Available in PDF, EPUB and Kindle. Book excerpt: Functional cerebral specialization is a phenomenon of considerable relevance not only to those investigating normal brain function, but also to scientists who study and treat clinical populations. This special issue of "Laterality" brings together contributions from researchers studying human populations and those using animal models, and includes a discussion of the important issues in the field of lateralization of function. The papers address the origins of laterality and the nature of lateralized functions in various species, as well as relations among the different forms of lateralization. Included are such topics as lateralized memory processes, early experiential effects on laterality, the genetic basis of handedness, perceptual processing in the haptic or visual domain, and learning. Comparisons between human and non-human primate findings and the implications of these findings for our understanding of the phylogenetic basis of hemispheric specialization are also emphasized.; The papers are based on presentations at two symposia that took place in August 1996: "Issues in Laterality", held at the International Congress of Psychology in Montreal; and "Laterality and Hemispheric Specialization in Primates: Brain Behavior and Evolution", held at the University of Wisconsin, Madison, at the joint meetings of the "XVI Congress of the International Primatological Society" and the "XIX Conference of the American Society of Primatologists".
