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Table of Contents
Intro
Foreword
Acknowledgment
Introduction
Why this Book?
Terminology Used in the Book
Overview of the Book
Contents
Part I: Understanding Handedness: Theory and Research
1: The Emergence of Handedness
1.1 Introduction
1.2 The Evolution of Handedness
1.2.1 Handedness as an Inherited Evolutionary Trait
1.2.2 Language and Gestures as Drivers for Hemispheric Lateralisation
1.2.3 Task Demand, Complexity and Efficiency as Influencing Factors
1.2.4 The Emergence of Tool Use as a Driver for Handedness Ontogenesis
1.3 Development of Individual Handedness
1.3.1 Cascade Theory on Handedness Development
1.3.2 Developmental Phases of Handedness
1.3.3 Early Handedness Development and Related Processes
Early Manual Asymmetry
Early Neuromotor Development and Bimanual Coordination
1.3.4 Influencing Factors on Early Handedness Development
1.3.5 Handedness Groups in Infants
1.4 Describing Handedness
1.4.1 Definition of Handedness
1.4.2 Classification of Handedness
1.4.3 Distribution of Handedness
1.5 Concluding Remarks
References
2: Neural Asymmetries
2.1 Introduction
2.2 Structural Asymmetries
2.2.1 Primary Motor Cortex
2.2.2 Corpus Callosum
Callosal Size and Handedness
Function of Corpus Callosum
Corpus Callosum and Bimanual Role Differentiation
2.2.3 Cerebellum
2.2.4 Corticospinal Tract
2.3 Functional Asymmetries
2.3.1 Footedness
2.3.2 Sensory Dominance
2.3.3 Language and Handedness
2.4 Manual Asymmetries
2.4.1 Crossing the Body Midline
2.4.2 Bimanual Cooperation and Coordination
Development of Bimanual Coordination
Mirror Movements
Bimanual Coupling and Decoupling
Bimanual Motor Learning
2.5 Concluding Remarks
References
3: Co-determinants of Handedness
3.1 Introduction
3.2 Inheritance of Handedness and Motor Abilities
3.2.1 Inheritance of Handedness
Distributions of Left Handedness
Twin Studies
Familial Left Handedness
Genetic Theories
Molecular Genetics
Polygenetic Predisposition
3.2.2 Inheritance of Motor Abilities
3.3 Development of Motor Abilities
3.3.1 Foundations for Motor Skills
3.3.2 Motor Planning
3.4 Environmental Influences
3.4.1 Pre-, Peri- and Postnatal Circumstances
Environmental Influences Before Birth
Environmental Influences at Birth
Environmental Influences After Birth
3.4.2 Sociocultural and Physical Influences with a Rightward Bias
3.5 Pathological Handedness
3.6 Developmental Delay and Disorders
3.6.1 Motor-Based Developmental Disorders
3.6.2 Sensory-Motor Abilities and Handedness
3.6.3 Crossing the Body Midline Avoidance
3.7 The Essence of Research Perspectives
3.7.1 Summarising Influencing Factors on Handedness Formation
3.7.2 Distinguishing Between Developmental Delay and Pathological Handedness
Foreword
Acknowledgment
Introduction
Why this Book?
Terminology Used in the Book
Overview of the Book
Contents
Part I: Understanding Handedness: Theory and Research
1: The Emergence of Handedness
1.1 Introduction
1.2 The Evolution of Handedness
1.2.1 Handedness as an Inherited Evolutionary Trait
1.2.2 Language and Gestures as Drivers for Hemispheric Lateralisation
1.2.3 Task Demand, Complexity and Efficiency as Influencing Factors
1.2.4 The Emergence of Tool Use as a Driver for Handedness Ontogenesis
1.3 Development of Individual Handedness
1.3.1 Cascade Theory on Handedness Development
1.3.2 Developmental Phases of Handedness
1.3.3 Early Handedness Development and Related Processes
Early Manual Asymmetry
Early Neuromotor Development and Bimanual Coordination
1.3.4 Influencing Factors on Early Handedness Development
1.3.5 Handedness Groups in Infants
1.4 Describing Handedness
1.4.1 Definition of Handedness
1.4.2 Classification of Handedness
1.4.3 Distribution of Handedness
1.5 Concluding Remarks
References
2: Neural Asymmetries
2.1 Introduction
2.2 Structural Asymmetries
2.2.1 Primary Motor Cortex
2.2.2 Corpus Callosum
Callosal Size and Handedness
Function of Corpus Callosum
Corpus Callosum and Bimanual Role Differentiation
2.2.3 Cerebellum
2.2.4 Corticospinal Tract
2.3 Functional Asymmetries
2.3.1 Footedness
2.3.2 Sensory Dominance
2.3.3 Language and Handedness
2.4 Manual Asymmetries
2.4.1 Crossing the Body Midline
2.4.2 Bimanual Cooperation and Coordination
Development of Bimanual Coordination
Mirror Movements
Bimanual Coupling and Decoupling
Bimanual Motor Learning
2.5 Concluding Remarks
References
3: Co-determinants of Handedness
3.1 Introduction
3.2 Inheritance of Handedness and Motor Abilities
3.2.1 Inheritance of Handedness
Distributions of Left Handedness
Twin Studies
Familial Left Handedness
Genetic Theories
Molecular Genetics
Polygenetic Predisposition
3.2.2 Inheritance of Motor Abilities
3.3 Development of Motor Abilities
3.3.1 Foundations for Motor Skills
3.3.2 Motor Planning
3.4 Environmental Influences
3.4.1 Pre-, Peri- and Postnatal Circumstances
Environmental Influences Before Birth
Environmental Influences at Birth
Environmental Influences After Birth
3.4.2 Sociocultural and Physical Influences with a Rightward Bias
3.5 Pathological Handedness
3.6 Developmental Delay and Disorders
3.6.1 Motor-Based Developmental Disorders
3.6.2 Sensory-Motor Abilities and Handedness
3.6.3 Crossing the Body Midline Avoidance
3.7 The Essence of Research Perspectives
3.7.1 Summarising Influencing Factors on Handedness Formation
3.7.2 Distinguishing Between Developmental Delay and Pathological Handedness