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Neural and Behavioural PlasticityThe Use of the Domestic Chick as a Model$
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R. J. Andrew

Print publication date: 1991

Print ISBN-13: 9780198521846

Published to Oxford Scholarship Online: March 2012

DOI: 10.1093/acprof:oso/9780198521846.001.0001

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Development of lateralization

Development of lateralization

(p.507) 20 Development of lateralization
Neural and Behavioural Plasticity

L. J. Rogers

Oxford University Press

Behavioural functions lateralized to one hemisphere predominate at one age and those of the other hemisphere at another. At another stage in the developmental plan, both sides of the brain may be equally involved in controlling the behaviour, even though each play a different role. The shifts in laterality of function correlate with changes in cellular function that occur first on one side of the brain and then on the other. Although the data is, as yet, scanty, it is suggested that while very young females have lateralization of visual learning, older females have no lateralization of this brain function. Function lateralities between the eyes are also present for attack and copulation. Lateralization for the control of agnostic behaviour has been found in adult fowls. The direction of laterlization in the chicken brain is determined by light exposure of the embryo prior to hatching, in both males and females.

Keywords:   behavioural functions, lateralization, lateralities, cellular function, visual learning, agnostic behaviour, hatching

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