Figure 9.

Comparing the tangential distributions of the callosal terminals in the respective groups as a function of their origin. (A) Frontal representation of all the individual callosal axons that were reconstructed in 3D from serial sections of visual cortex in each experimental group. Arrow, transition zone between A17 and A18 (TZ). (B) Tangential distribution of the terminals of each callosal axon as a function of their origin (TZ, A17, or A18), with corresponding stereotaxic coordinates. CEZ, callosal efferent zone; CAZ, callosal afferent zone. Data from NR group have been reproduced with permission from Houzel et al. (1994).