PSYC 405 Lecture Notes - Lecture 3: Aging Brain, Quasi, Cerebellum
4 Feb 2020
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Method similar to an experiment design except that it makes use of naturally occuring groups rather than randomly assigning subjects to groups. Tools to understand what is happening in the brain of living humans! In addition to brain structures at the macro level, we study the brain at a microscopic level too. A piece of brain tissue the size of a grain of sand contains 100,000 neurons and 1 billions synapses, all talking to one another. There is some brain shrinkage, gradually, over time. Visual cortex, areas of brain related to sensory functions. If there is shrinkage or holes etc, brain damage!!!! Normal aging does not include a large amount of neuron loss. Brain trauma and/ or neurodegenerative changes from disease process are linked to large amounts of neuronal damage or loss. Brain tissue responds to damage or loss of neurons in several ways. If cell body of neuron remains intact, the damaged brain neuron.
