The term deconnection will refer to a reduction in connectivity. Disconnectivity will be used when the main effect of the lesion results in lengthening or scattering of the conduction time. Finally, we will speak about misconnectivity when connections are erroneous, ie, between two neurons which should not be connected. The reader should be warned that this is not the way other authors use these terms, which arc generally considered to be interchangeable .33,52