function [amplitudes, sweep_cut] = gb_background_activity(cfg, data)

sweep_start = round(cfg.start_time*cfg.SR);
sweep_end = round(cfg.end_time*cfg.SR);

for x = 1:length(cfg.sp_trigger)
   
   sweep_points{x} = sweep_start+cfg.sp_trigger(x):cfg.sp_trigger(x)+sweep_end;
    
   sweep_cut{x} = data(sweep_points{x});
   
    %plot(sweep_cut{x})
   switch  cfg.analysis
       case 'p2p'
   MEP_max{x} = max(sweep_cut{x});
   MEP_min{x} = min(sweep_cut{x});
   
   amplitudes(x,1) = MEP_max{x} - MEP_min{x};
   
       case 'mean'
         amplitudes(x,1) = mean(sweep_cut{x});  
         
       case 'median'
         amplitudes(x,1) = median(sweep_cut{x});  
         
       case 'sum'
         amplitudes(x,1) = sum(sweep_cut{x});   
         
   end

end