Ventricular landmarks for thalamic stereotaxy in Macaca.

The most satisfactory ventricular landmarks and coordinate system for thalamic stereotaxy in the macaque are essentially the same as for man (i.e. from CA and CP). The degree of precision achieved when using this system is markedly superior to that obtained when using bony landmarks. Stereotaxy methods using ventriculographic data are described. Multivariate analyses were performed to analyse interspecific differences and more specially to determine whether a single stereotaxic atlas could be used for several species which seems to be the case for M. mulatta and M. speciosa.