Additional views of 6 brainstem nuclei (caudal linear raphe [CLi], paramedian raphe nucleus [PMnR], cuneiform nucleus [CnF], laterodorsal tegmental nucleus [LDTg], locus coeruleus [LC], median raphe [MnR]), which are not visible in figure 3. (A) Spatial overlap of microbleeds across patients at the voxel level in the form of a heat map. (B) Atlas of arousal brainstem nuclei used to evaluate the microbleed overlap at the nucleus level.