preparator.addFilter(name='Keep right direction',f=lambdaevents:(events['type'].isin(['10'])&events['type'].shift(-1).isin(saccade)&(events['end_x'].shift(-1)<400))
preparator.addFilter(name='Keep saccade that has previously a cue',f=lambdaevents:events['type'].isin(saccade)&events['type'].shift(1).isin(cue))
preparator.addFilter(name='Keep right direction',f=lambdaevents:(events['type'].shift(1).isin(['10'])&events['type'].isin(saccade)&(events['end_x']<400))