re respiratory rhythm in brain slices. from Refik Kanjhan, in Brisbane, August 2003 Of course you can show it to your class. I would be more that happy if students can learn something out of it. The prep is 600 micron thick slice preperation and it must have VLM intact. The XII motoneurons are driven by synaptic inputs, mainly respiratory input from the VLM but also various other modulatory inputs from other parts of the brain cortex, olfactory bulb, raphe, locus subcoerules etc.