The NeXus Trigger Interface (NTI) is used to accurately synchronize the physiological parameters being recorded by the NeXus device with external stimuli (triggers) generated by computer running e.g. E-prime/Presentations or external devices like Eye-trackers. It can be used for registering stimuli in event related potentials (ERP) or evoked potentials (EP) experiments, also in combination with E-prime or presentations.
The NTI measures all of its inputs with 2048 samples/second, which comes to an accuracy of less than 1 ms.