PSYC 3530 Chapter Notes -Temporal Lobe, Lateral Sulcus, Commissurotomy
11 Nov 2013
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Laterality-- the idea that the two cerebral hemispheres have separate functions. Four variables complicate the research on laterality: laterality is relative, not absolute, cerebral site is at least as important in understanding brain function as cerebral side, laterality is affected by environmental and genetic factors. Male and right-handed brains tend to be more symmetrical than female or left- handed brains: laterality is exhibited by a range of animals. Was once believed to be uniquely human & related to language. Cerebral asymmetry: wernicke"s area = planum temporale, mri scans of living brains confirm 8 major anatomical differences between the two hemispheres: The right hemisphere is slightly larger and heavier than the left, but the. The temporal lobes display a marked structural asymmetry that may. This anatomical asymmetry complements an apparent functional asymmetry in the thalamus, the left thalamus being dominant for language functions. The slope of the lateral fissure is gentler on the left hemisphere than on the right.
