def insert_synapses(self, cell, cellindex, synParams, idx = np.array([]),
                        X='EX', SpCell = np.array([]),
                        synDelays = None):
        """
        Insert synapse with `parameters`=`synparams` on cell=cell, with
        segment indexes given by `idx`. `SpCell` and `SpTimes` picked from
        Brunel network simulation


        Parameters
        ----------
        cell : `LFPy.Cell` instance
            Postsynaptic target cell.
        cellindex : int
            Index of cell in population.
        synParams : dict
            Parameters passed to `LFPy.Synapse`.
        idx : numpy.ndarray
            Postsynaptic compartment indices.
        X : str
            presynaptic population name
        SpCell : numpy.ndarray
            Presynaptic spiking cells.
        synDelays : numpy.ndarray
            Per connection specific delays.


        Returns
        -------
        None


        See also
        --------
        Population.insert_all_synapses

        """
        #Insert synapses in an iterative fashion
        try:
            spikes = self.networkSim.dbs[X].select(SpCell[:idx.size])
        except AttributeError as ae:
            raise ae, 'could not open CachedNetwork database objects'


        #apply synaptic delays
        if synDelays is not None and idx.size > 0:
            for i, delay in enumerate(synDelays):
                if spikes[i].size > 0:
                    spikes[i] += delay

        #create synapse events:
        for i in range(idx.size):
            if len(spikes[i]) == 0:
                pass
                #print 'no spike times, skipping network cell #%i' % SpCell[i]
            else:
                synParams.update({'idx' : idx[i]})
                # Create synapse(s) and setting times using class LFPy.Synapse
                synapse = LFPy.Synapse(cell, **synParams)
                #SpCell is a vector, or do not exist
                synapse.set_spike_times(spikes[i] + cell.tstartms)
Insert synapse with `parameters`=`synparams` on cell=cell, with
        segment indexes given by `idx`. `SpCell` and `SpTimes` picked from
        Brunel network simulation


        Parameters
        ----------
        cell : `LFPy.Cell` instance
            Postsynaptic target cell.
        cellindex : int
            Index of cell in population.
        synParams : dict
            Parameters passed to `LFPy.Synapse`.
        idx : numpy.ndarray
            Postsynaptic compartment indices.
        X : str
            presynaptic population name
        SpCell : numpy.ndarray
            Presynaptic spiking cells.
        synDelays : numpy.ndarray
            Per connection specific delays.


        Returns
        -------
        None


        See also
        --------
        Population.insert_all_synapses