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Biological Basis of Behaviour Lecture covering biological basis of behaviour. Topics covered include: brain mapping (Penfield), left-handedness (Stan Coren), and divisions of the nervous system. Illustrations included.

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PSYC 1010
Rebecca Jubis

Biological Basis of Behaviour Biological Approach Argues that to understand behaviour, we must examine the brain and nervous system. An underlying assumption is that for every thought or behaviour, there’s a corresponding physical event taking place in the brain. Penfield - “Brain Mapping” (m.n.) Cortex Region of the brain surrounding the , which is involved in complex thinking. Corpus callosum Tissue connecting the two hemispheres of the brain, allowing them to communicate. Right hemisphere  Creative behaviour Left Hemisphere  Cognitive abilities, speaking, writing, reading, calculating Stan Coren  10 – 15% of population is left handed  By age of 21, one third have died  By age 50, decrease to 5% of population  More left handed people suffer from immune disease  Left handed people make up 45 to 55 of the lesbian/gay community  Higher rate of left handedness in twins  More left handed people become alcoholics Ambidexterous: Ability to use both hands Right Handed Left Handed Speech in left 92 % 69% Speech in Right 7% 18% Speech in Both 1% 13% Ne
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