Hg

Figure 2 Magnetic resonance image of a normal human brain showing a horizontal section through the region of Heschl's gyrus (HG) and the planum temporale (PT).

Figure 3 Levels and regions of auditory cortical processing in the macaque monkey. The areas shown are located on the superior temporal gyrus and in the depths of the superior temporal sulcus (STS), which has been opened to show the extension of auditory-related cortex into this sulcus. Level 1 represents the core (darkest shading) and includes tonopically organized regions A1, R, and RT; level 2 represents the belt areas (moderate shading) that encircle the core; level 3 represents the parabelt areas RP and CP (light shading), found in the upper bank of the STS; level 4a (stippling) represents putative auditory cortical areas outside the parabelt region, including the rostral area STGr; and level 4b (light hatching) represents frontal lobe cortex involved in auditory processing (reproduced with permission from Kaas et al, 1999).

Figure 3 Levels and regions of auditory cortical processing in the macaque monkey. The areas shown are located on the superior temporal gyrus and in the depths of the superior temporal sulcus (STS), which has been opened to show the extension of auditory-related cortex into this sulcus. Level 1 represents the core (darkest shading) and includes tonopically organized regions A1, R, and RT; level 2 represents the belt areas (moderate shading) that encircle the core; level 3 represents the parabelt areas RP and CP (light shading), found in the upper bank of the STS; level 4a (stippling) represents putative auditory cortical areas outside the parabelt region, including the rostral area STGr; and level 4b (light hatching) represents frontal lobe cortex involved in auditory processing (reproduced with permission from Kaas et al, 1999).

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