Birds that had learnt to locate food in an operant chamber by means of magnetic directions were tested for lateralization of magnetic compass orientation by temporarily covering one eye. A brain architecture that is so old and can be found in so many different functional systems and forms of life must provide a solid selection advantage. This site is like a library, you could find million book here by using search box in the widget. Author by : Frederick L. In two experiments with three different release sites, birds using their right eye showed considerably better homing performance. To this end, the book includes extensive data sets on personality, behavioral tendencies, mind-body responses, and performance outcome.
The topics discussed exhibit an interconnectedness such that the approaches and techniques used in one area of cerebral laterality research have implications for research in other disciplines. The techniques used were those of conditional reflexes and evoked potentials. Comprised of 11 chapters, this book opens with a historical overview of research into the cerebral lateralization of structures and functions in nonhuman species. Without this information, a difference between pigeons using their left or right eye emerged. The discussion then turns to lateralization of vocal control in songbirds and lateralization of several behaviors in domestic chicks. Accordingly, we have tested the extent and manner of song lateralization in the zebra finch Taeniopygia guttata , a species previously identified with an atypical pattern of lateralization.
Author by : Jeannette P. Box naturalists have saw the actions of weasels for hundreds of years. Consistent with a lateralization of visual processing during communication, there were higher levels of expression of both egr-1 and c-fos in the left optic tectum after directed singing. Effect of Lesion Location on Behavioral and Neurochemical Asymmetries; V. In all three tasks a significant lateral bias towards use of the left hand at the group level was found. However, left-right differences of brain and function are not only widespread among mammals, but also among many other vertebrates. On the other hand, males with cuts of the left nerve also showed consistent changes, exhibiting frequency increases, especially toward the ends of syllables.
It is about 8% larger on the left than on the right in males, females, and females treated with testosterone. Topics discussed include Patterns of Lateralized Behavior in Prosimians; Behavioral Lateralization in Language-Trained Chimpanzees; Patterns of Handedness: Comparative Study of Nursery School Children and Captive Gorillas; and Rotational Behavior in Children and Adults. Human clinical neuropsychological findings, such as the effects of unilateral cortical and thalamic lesions and the syndrome of unilateral neglect, are considered, together with asymmetries in perception and attention. The present study assesses the gross morphology of the hypoglossal nucleus in canaries. A second emphasis is on comparative studies of handedness in primates.
Lateralized Behavioral and Neurochemical Consequences of Unilateral Brain Injury in Rats; I. Lateralization of song production has been extensively characterized, and lateralization of song perception has begun to be studied. Then, it discusses the individual differences in laterality, methods and measurement used in laterality studies, and experiments on dichotic listening and auditory lateralization. The aim of this review is twofold. Relationship between Anatomical and Functional Asymmetry; V.
In this context, it is of special interest to study likely exceptions to these rules, for the light they can shed on the functions and mechanisms of song lateralization. © 2012 by Olga F. Thus, cerebral asymmetry is a ubiquitous phenomenon that possibly is not the exception but the rule. Shape had an insignificant effect on the direction of hand preferences or on the percentage of preferred hand use. Anomalies in the laterality of numerous neurocognitive dimensions associated with schizophrenia have been documented, but their role in the etiology and early development of the disorder remain unclear. Author by : William D.
Both covert and overt orienting of attention improved in the course of the day. The final chapter analyzes the implications of brain asymmetries for evolution, genetics, and clinical syndromes. Thirteen spider monkeys were presented with three different food-reaching tasks and assessed for hand preferences with a minimum of 100 reaches per animal. When late stage hatching behaviors were disrupted, population laterality was not evident and individual laterality was reduced. Several chapters summarize entire families of primates while others focus on genetic and non-genetic models of handedness in humans and how they can be tested in non-human primates.
This quantity is an interdisciplinary mixture of views and experiences on social concerns in fisheries from a various variety of case experiences and examine disciplines. Disruption of hatch behaviors further decreased laterality. There was a high degree of consistency between observations made on different occasions for the same animal, showing that degrees of relative preference tend to be stable in individuals. In males the brain has been shown to be more asymmetrical than in females. Animals that travel together in groups display a variety of fascinating motion patterns thought to be the result of delicate local interactions among group members. These include lateralization in non-human primates, computational models of hemispheric processing, hemispheric transfer and interaction, perceptual asymmetries, techniques to measure dynamic changes in hemispheric processing of information, and new conceptualizations of the relation between handedness and cerebral laterality.