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Egg, light: Lateralization!

Grootjans, J.N. (2011) Egg, light: Lateralization! Bachelor's Thesis, Biology.

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Abstract

Lateralization is a common feature in (in)vertebrates. Though studying it in humans is nearly impossible, it can be studied in animal models. In this report I describe the avian model of Lateralization in the visual pathway under influence of light and steroid hormones. Birds reach a size that inhibits major movement, while in the egg. They turn there right eye towards the egg shell. This eye is then open for light stimulation which will cause lateralization of the visual pathway. Birds posses two visual pathways: the thalamofugal and the tectofugal pathway. In chickens and pigeon, which are the most used avian models, these mature on different times, this is due to the stage off immatureness of the hatching embryo. Lateralization is thought to be developed quite early in the evolution, because of the presence in distant related species. Lateralization has several advantages and disadvantages both for the individual and the population the individual lives. Knowledge of lateralization, especially where certain functions are located in the brain, could be an important tool for medical sciences.

Item Type: Thesis (Bachelor's Thesis)
Degree programme: Biology
Thesis type: Bachelor's Thesis
Language: English
Date Deposited: 15 Feb 2018 07:45
Last Modified: 15 Feb 2018 07:45
URI: http://fse.studenttheses.ub.rug.nl/id/eprint/9651

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