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Neuropsychology of Left-Handedness focuses on the neurological imperative and unique brain organization of left-handers.
This book is organized into two parts. Part I analyzes ideas about the origins of left-handedness, such as possible genetic mechanisms, manner in which asymmetries may occur during the first cell cleavages following fertilization, handedness of twins, and possibility that some left-handedness may be due to environmental or even pathological influences. The second part is devoted to a variety of investigations of asymmetric hemisphere specialization in right- and left-handers. The different groups of left-handers, which includes male and female, strong left-preferrers and ambidexters, familial and non-familial lefthanders, and those who prefer an “inverted” position for writing as opposed to a “non-inverted” position, are also identified.
This publication is a good reference for medical practitioners and specialists interested in the neuropsychology of left-handedness.
List of Contributors
I Wence Sinistrality?
1 Left-Handedness: Early Theories, Facts, and Fancies
How Many Left-Handers?
Left-Handedness as Pathological
Studies of Animals
2 Neuroanatomical Asymmetry in Left-Handers: A Review and Implications for Functional Asymmetry
Hemisphere Functional Asymmetry
Patterns of Cognitive Skills and Neuroanatomical Asymmetry
Gender and Neuroanatomical Asymmetry
3 The Sinistral Blastocyst: An Embryologic Perspective on the Development of Brain-Function Asymmetries
4 Left-Handedness in Twins: Implications for the Mechanisms Underlying Cerebral Asymmetry of Function
The Incidence of Sinistrality among Twins
Factors Responsible for Elevating the Incidence of Sinistrality among Twins
The Relationship of Handedness, Cerebral Organization, and Cognitive Abilities in Twins
5 Is Left-Handedness Genetically Determined?
A Nongenetic Approach
6 A Model for the Ontogeny of Cerebral Organization in Non-Right-Handers
Hypotheses about the Brain Basis of Cerebral Specialization
Brain Stem Activity and Cerebral Asymmetry
The Selective Activation Model of Cerebral Lateralization
II Cerebral Variation: The Most Consistent Sinistral Atribute
7 Incidence of Aphasia in Lefl-Handers: A Test of Some Hypothetical Models of Cerebral Speech Organization
8 Individual Differences in Psychoneurological Organization
Origins of Lateral Asymmetry
Behavioral Indices of Cerebral Laterality
Sex-Related Differences in Cerebral Organization
The Population Variance in Hemispheric Lateralization
Predictions regarding the Cognitive Covariates of Cerebral Organization
9 Handedness and Individual Differences in Hemispheric Activation
Hemispheric Activation: The Concept and Its Operationalization
The Effect of Handedness, Sex, and Eye Dominance on Hemispheric Activation
10 Two Hands, Two Brains, Two Sexes
Right versus Left-Handed Differences
Left-Handed versus "Ambi-Handed" Differences
Inverted versus Noninverted Hand Posture Differences
III Sinistral Abilities
11 Handedness and Memory for Tonal Pitch
12 Handedness in Artists
13 Cognitive Deficit and Left-Handedness: A Cautionary Note
14 Age-Related Changes in Cognitive Abilities and Hemispheric Specialization
Implications of Cognitive Differences
Age-Associated Changes in Cognitive Abilities and Hemispheric Specialization
15 Which Hand Is the "Eye" of the Blind?—A New Look at an Old Question
Hand Asymmetries in Braille Reading: Early Studies
Braille Reading and Right-Hemisphere Functions
Experiment 1: Blind Subjects
Hand Asymmetries in Sighted Subjects
Experiment 2: Sighted Subjects, Massed Left-Right Trials
Experiment 3: Sighted Subjects, Alternating Left-Right Trials
Experiment 4: Left-Handers, Massed Left-Right Trials
Experiment 5: Left-Handers: Alternating Left-Right Trials
Summary and Conclusions
16 Tactile Learning, Handedness, and Reading Disability
Mechanical Tactile Stimulation
Experiment 1: Interhemispheric Transfer from the Chest Area to the Hands
Experiment 2: Interhemispheric Transfer from the Nonpreferred to the Preferred Hand
- No. of pages:
- © Academic Press 1980
- 28th January 1980
- Academic Press
- eBook ISBN:
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