colliculus -slice preparations

[Mathias Boller]

Is there anybody, who does transverse slice preparations of the rat 
midbrain for intracellular recordings? We are trying it and our 
preparations are not in a very good shape. The vibroslice we use 
copresses the tissue more than it cuts as soon as the blade reaches the 
periaqueductal grey and it becomes worse in the pedunculi. The 
collicular tissue itself cuts fine, as well as the cortex. We don't want to 
trim the tougher ventral tissue away, since we need to have the colliculi 
and the deeper portions of the reticular formation in the same slice.
Any idea is welcome.
	Thanks, Mathias.