Psychology 1000 Study Guide - Phineas Gage, Frontal Lobe, Axon Terminal

• School: Western University
• Department: Psychology
• Course: Psychology 1000
• Professor: John Campbell

Document Summary

Brain is a grapefruit sized, 3 pound mass of tissue made up of neurons. Neurons are the building blocks of the nervous system. At birth our brains are made up of about 100 billion neurons. Cerebral cortex: outermost layer of brain divided into different lobes. Memory and movement intact, could learn new things. But, personality changed dramatically: modern day phineas gage stayed neutral even though he could grasp the idea of what he was being shown (even for holocaust pictures). Aphasia partial or total loss of the ability to communicate. Depending on the location of the damage, the specific issue will differ. Broca"s aphasia: words make sense but it is difficult to communicate. Wernicke"s aphasia: could produce words and sentences but makes no sense. Our brains have left and right cerebral hemispheres. Lateralization refers to the relatively greater location of a function in one hemisphere or the other. Cut the bridge between the right and left hemisphere to avoid seizures.