void
nest::spike_detector::handle( SpikeEvent& e )
{
// accept spikes only if detector was active when spike was
// emitted
if ( device_.is_active( e.get_stamp() ) )
{
assert( e.get_multiplicity() > 0 );
long dest_buffer;
if ( kernel()
.modelrange_manager.get_model_of_gid( e.get_sender_gid() )
->has_proxies() )
// events from central queue
dest_buffer = kernel().event_delivery_manager.read_toggle();
else
// locally delivered events
dest_buffer = kernel().event_delivery_manager.write_toggle();
for ( int i = 0; i < e.get_multiplicity(); ++i )
{
// We store the complete events
Event* event = e.clone();
B_.spikes_[ dest_buffer ].push_back( event );
}
}
}
void ginzburg::handle(SpikeEvent & e)
{
assert(e.get_delay() > 0);
// The following logic implements the encoding:
// A single spike signals a transition to 0 state, two spikes in same time step
// signal the transition to 1 state.
//
// Remember the global id of the sender of the last spike being received
// this assumes that several spikes being sent by the same neuron in the same time step
// are received consecutively or are conveyed by setting the multiplicity accordingly.
long_t m = e.get_multiplicity();
long_t gid = e.get_sender_gid();
const Time &t_spike = e.get_stamp();
if (m == 1)
{ //multiplicity == 1, either a single 1->0 event or the first or second of a pair of 0->1 events
if (gid == S_.last_in_gid_ && t_spike == S_.t_last_in_spike_)
{
// received twice the same gid, so transition 0->1
// take double weight to compensate for subtracting first event
B_.spikes_.add_value(e.get_rel_delivery_steps(network()->get_slice_origin()),
2.0*e.get_weight());
}
else
{
// count this event negatively, assuming it comes as single event
// transition 1->0
B_.spikes_.add_value(e.get_rel_delivery_steps(network()->get_slice_origin()),
-e.get_weight());
}
}
else // multiplicity != 1
if (m == 2)
{
// count this event positively, transition 0->1
B_.spikes_.add_value(e.get_rel_delivery_steps(network()->get_slice_origin()),
e.get_weight());
}
S_.last_in_gid_ = gid;
S_.t_last_in_spike_ = t_spike;
}
void
nest::spin_detector::handle( SpikeEvent& e )
{
// accept spikes only if detector was active when spike was
// emitted
if ( device_.is_active( e.get_stamp() ) )
{
assert( e.get_multiplicity() > 0 );
long_t dest_buffer;
if ( kernel().modelrange_manager.get_model_of_gid( e.get_sender_gid() )->has_proxies() )
dest_buffer = kernel().event_delivery_manager.read_toggle(); // events from central queue
else
dest_buffer = kernel().event_delivery_manager.write_toggle(); // locally delivered events
// The following logic implements the decoding
// A single spike signals a transition to 0 state, two spikes in same time step
// signal the transition to 1 state.
//
// Remember the global id of the sender of the last spike being received
// this assumes that several spikes being sent by the same neuron in the same time step
// are received consecutively or are conveyed by setting the multiplicity accordingly.
long_t m = e.get_multiplicity();
index gid = e.get_sender_gid();
const Time& t_spike = e.get_stamp();
if ( m == 1 )
{ // multiplicity == 1, either a single 1->0 event or the first or second of a pair of 0->1
// events
if ( gid == last_in_gid_ && t_spike == t_last_in_spike_ )
{
// received twice the same gid, so transition 0->1
// revise the last event written to the buffer
( *( B_.spikes_[ dest_buffer ].end() - 1 ) )->set_weight( 1. );
}
else
{
// count this event negatively, assuming it comes as single event
// transition 1->0
Event* event = e.clone();
// assume it will stay alone, so meaning a down tansition
event->set_weight( 0 );
B_.spikes_[ dest_buffer ].push_back( event );
}
}
else // multiplicity != 1
if ( m == 2 )
{
// count this event positively, transition 0->1
Event* event = e.clone();
event->set_weight( 1. );
B_.spikes_[ dest_buffer ].push_back( event );
}
last_in_gid_ = gid;
t_last_in_spike_ = t_spike;
}
}
