MEDICAL CORNER … our wondrous brain!!

MEDICAL CORNER … Our incredible brain!! Take a look ….

It Is What It Is

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~~February 19, 2014~~

The longitudinal fissure separates the human brain into two distinct cerebral hemispheres, connected by the corpus callosum. The hemispheres exhibit strong, but not complete, bilateral symmetry in both structure and function. For example, structurally, the lateral sulcus generally is longer in the left hemisphere than in the right hemisphere, and functionally, Broca’s area and Wernicke’s area are located in the left cerebral hemisphere for about 95% of right-handers, but about 70% of left-handers.

Broad generalizations are often made in popular psychology about one side or the other having characteristic labels, such as “logical” for the left side or “creative” for the right. These labels are not supported by studies on lateralization, as lateralization does not add specialized usage from either hemisphere. Both hemispheres contribute to both kinds of processes, and experimental evidence provides little support for correlating the structural differences between the sides with such broadly-defined functional differences.

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