Wiktionary
n. (context anatomy English) A flat upper surface on the temporal lobe of the brain, involved in hearing and language.
Wikipedia
The planum temporale is the cortical area just posterior to the auditory cortex ( Heschl's gyrus) within the Sylvian fissure. It is a triangular region which forms the heart of Wernicke's area, one of the most important functional areas for language. Original studies on this area found that the planum temporale was one of the most asymmetric regions in the brain, with this area being up to ten times larger in the left cerebral hemisphere than the right.
Usage examples of "planum temporale".
Recently neurologists at Germany's Heinrich Heine University used magnetic resonance imaging to discover that musicians with perfect pitch apparently process sounds in the planum temporale of the left cortex Since it's been shown that music is ordinarily processed in the right cortex, perfect pitch may be closely related to the language ability that occurs more in the left cortex.