def neurite_root_section_ids(self):
sec = self.sections<EOL>return [i for i, ss in enumerate(sec)<EOL>if ss.pid > -<NUM_LIT:1> and (sec[ss.pid].ntype == POINT_TYPE.SOMA and<EOL>ss.ntype != POINT_TYPE.SOMA)]<EOL>
Get the section IDs of the intitial neurite sections