PTDC0009

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Figurę 5.4

Standard asymmetry of the planum temporale (/>/), the roughly triangular region ly-ing posterior (interior in the diagram) to the transverse auditory gyrus of Heschi (H) and bound lateraliy by the Sylvian fissurc (S). This pattern of asvmmetrv is seen in approximately two-thirds of normal human brains. Other abbreviations: i. insuia; v, la terał ventricle.

Figurę 5.5

Symmetry and asymmetry in the haman planum temporale (PT). Two observations characterize these cases: (1) when the brnin is symmetrical in this region, both piana tend to be relatively largo (that is, the standard left planum pattern is preserved bi-laterally); (2) the splenium of the corpus callosum (cut in the midline of the photo-graphs) appears to be thicker in the symmetrical cases.

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