NESC 3227 Lecture Notes - Olfactory Bulb, Commissurotomy, Amobarbital
17 Apr 2013
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Often used interchangeably, but really not the same. Cerebral asymmetry has to do more with structure than function. While laterality has more to do with functional differences. When we"re talking about structure, we mean anatomical construction: there"s a fair bit of symmetry from right to left. Left and right hemispheres appear anatomically as mirror images of each other. All the primary sensory areas in the brain tend to be fairly symmetrical across hemispheres. As you move up to areas of more complex controls, functionality and structure both begin to differ between hemispheres: such as language being processed mainly in left hemisphere, and music and spatial stuff in right hemisphere. Firs t thing you can look at are changes in size or shape (gross anatomy changes) How to measure: by volume or weight are acceptable ways. But the left occipital lobe extends farther posteriorly.
