# Command: spin_detector

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Name:

    spin_detector - Device for detecting binary states in neurons.

Description:

      The spin_detector is a recording device. It is used to decode and
      record binary states from spiking activity from a single neuron, or
      from multiple neurons at once. A single spike signals the 0 state, two
      spikes at the same time signal the 1 state. If a neuron is in the 0 or
      1 state and emits the spiking activity corresponding to the same
      state, the same state is recorded again.  Therefore, it is not only
      the transitions that are recorded. Data is recorded in memory or to
      file as for all RecordingDevices. By default, GID, time, and binary
      state (0 or 1) for each decoded state is recorded. The state can be
      accessed from ['events']['weight'].

      The spin_detector can also record binary state times with full
      precision from neurons emitting precisely timed spikes. Set
      /precise_times to true to achieve this. If there are precise models
      and /precise_times is not set, it will be set to True at the start of
      the simulation and /precision will be increased to 15 from its default
      value of 3.

      Any node from which binary states are to be recorded, must be
      connected to the spin_detector using the Connect command. Any
      connection weight and delay will be ignored for that connection.

      Simulations progress in cycles defined by the minimum delay. During
      each cycle, the spin_detector records (stores in memory or writes to
      screen/file) the states during the previous cycle. As a consequence,
      any state information that was decoded during the cycle immediately
      preceding the end of the simulation time will not be recorded. Setting
      the /stop parameter to at the latest one min_delay period before the
      end of the simulation time ensures that all binary states desired to
      be recorded, are recorded.

      states are not necessarily written to file in chronological order.

Receives:

    SpikeEvent

SeeAlso:

- spike_detector
- Device
- RecordingDevice

Source:

    /opt/conda/conda-bld/nest_1512418773968/work/nest-2.14.0/models/spin_detector.h

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