{
    "2" : {
      'component' :  'mozaik.sheets.population_selector.RCGrid',
      'variables' : ("spikes","v","gsyn_exc" , "gsyn_inh"),
      'params' :  {
                            'size': 200.0,  # the size of the grid (it is assumed to be square) - it has to be multiple of spacing (micro meters)
                            'spacing' : 10.0, #the space between two electrodes (micro meters)
                            'offset_x' : 0.0, # the x axis offset from the center of the sheet (micro meters)
                            'offset_y' : 0.0, # the y axis offset from the center of the sheet (micro meters)

                  }
    },
    "3" : {
      'component' :  'mozaik.sheets.population_selector.RCGrid',
      'variables' : ("spikes"),
      'params' :  {
                            'size': 600.0,  # the size of the grid (it is assumed to be square) - it has to be multiple of spacing (micro meters)
                            'spacing' : 20.0, #the space between two electrodes (micro meters)
                            'offset_x' : 0.0, # the x axis offset from the center of the sheet (micro meters)
                            'offset_y' : 0.0, # the y axis offset from the center of the sheet (micro meters)

                  }
    },

    "4" : {
      'component' :  'mozaik.sheets.population_selector.RCGrid',
      'variables' : ("spikes"),
      'params' :  {
                            'size': 2000.0,  # the size of the grid (it is assumed to be square) - it has to be multiple of spacing (micro meters)
                            'spacing' : 100.0, #the space between two electrodes (micro meters)
                            'offset_x' : 0.0, # the x axis offset from the center of the sheet (micro meters)
                            'offset_y' : 0.0, # the y axis offset from the center of the sheet (micro meters)

                  }
    },

}
