'Aux method.'

def _apply_evoked(self, evoked, include, exclude, event_id, picks):

    data = evoked.data[picks]
    evokeds = dict()
    for eid in event_id:
        data_r = self._pick_sources(data, include, exclude, eid)
        evokeds[eid] = evoked.copy()
        evokeds[eid].data[picks] = data_r
    return evokeds
