CHAPTER 4.docx

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University of Toronto Scarborough
Janelle Leboutillier

CHAPTER 4  The observations of functional specialization of the brain led to the development of modern neuropsychology  Laterality: the functional specialization of the right and left hemispheres  Left hemisphere (LH) is specialized for language and the control of the right hand and fingers  Right hemisphere (RH) played a role in visual identification of objects, is specialized for music, emotion, and spatial abilities as well as control of the left hand and fingers  RH has poor linguistics, therefore took longer to understand its functions Split Brain - RH and LH communicate with each other using commissural systems: anterior and posterior commissures, the corpus callosum, and the habenular commissure and the hippocampal commissure - Roger Sperry and Ronald Myers: cat experiment using commissurized and non-commissurized cats. A stimulus shown to the right and left eye separately and a response was to be made to acquire the reward. In commissurized cats, there was no transfer of learning between the eyes – a stimulus shown to the right eye, was not recognized by the left eye and had to be trained separately ~ WHY ? ~ When corpus callo
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