The third possibility is that the planum temporale is not directly related to language or communication but has tangential functions, and its role in language has been vastly overrated.
32.
In addition, more and more research is suggesting that the apparent asymmetries in this region are the result of old techniques and criteria used to identify the planum temporale.
33.
Of 100 human brains examined, 68 had an enlarged left planum temporale, 24 had structures of equal size, and 11 had larger plana temporale on the right side.
34.
Of 100 human brains examined, 68 had an enlarged left planum temporale, 24 had structures of equal size, and 11 had larger plana temporale on the right side.
35.
This greater size of the left planum temporale compared with the right is already present in the fetus, where it can be observed starting from the 31st week of gestation.
36.
In most people, the structure, a slender inch-long piece of tissue called the planum temporale, is larger in the left side of the brain than the right.
37.
Both the left and right hemispheres of the brain have this structure, said Schlaug, but only the left side planum temporale was enlarged in the musicians who had perfect pitch.
38.
Furthermore, while these researcher found statistically significant asymmetries in the pars opercularis and the planum temporale, they found no correlations between asymmetries of these brain regions with that of the pars triangularis.
39.
And, echoing Galaburda, he said the asymmetry of the planum temporale clearly isn't necessary for language, because such a large percentage of the population doesn't have that feature.
40.
According to the neuroscience journal review series " Progress in Brain Research ", it has been found that males have larger and longer planum temporale and thalami is also larger in females.
