Results of the t-sne analysis on the hybrid data, HD1 (A) and HD2 (B). The colors represent spikes that belong to pre-classified units added to the data sets while the black points represent spikes pre-existing in the datasets and thus do not belong to known units. The insert in B) shows a zoom-in of the embedding of units 2 and 3 that t-sne does not manage to segregate. 