NEURON mod files from the paper: Michele Migliore and Gordon M Shepherd Dendritic action potentials connect distributed dendrodendritic microcircuits J. Comp. Neurosci. (2007) (online first). The simulation file can be used to reproduce the bottom left histogram in Fig.3,representing the M2 mitral cell firing in the presence of the GCs network. In the simulation window, "odor" is the number of odor input (3-11), and traces for the 3 Mitral cells are plotted using different colors. To start, auto-launch from ModelDB or Under unix systems: to compile the mod files use the command nrnivmodl and run the simulation hoc file with the command nrngui mosinit.hoc Under Windows systems: to compile the mod files use the "mknrndll" program on the folder expanded from this archive, then double click on the simulation file mosinit.hoc to start the simulation. Under MAC OS X: Expand the MC-GC.zip archive after downloading it. Drag the MC-GC folder onto the mknrndll icon in the NEURON application folder. Drag the mosinit.hoc file in the MC-GC folder onto the nrngui icon in the NEURON application folder. For each platform: Enter the odor number next to the odor button, press Run, and count the number of M2 APs (red trace). Repeat for odors 3 through 11. Questions on how to use this model should be directed to michele.migliore@pa.ibf.cnr.it