# Psych toolbox and NetStation Synchronization **URL:** \ **Category:** Uncategorized\ **Created:** [February 14, 2017, 8:15pm UTC](https://psychtoolbox.discourse.group/t/psych-toolbox-and-netstation-synchronization/124 "2017-02-14T20:15:43Z")\ **Posts on this page:** 1\ **Page:** 1
**Author:** ![Allen\_Ingling](https://avatars.discourse-cdn.com/v4/letter/a/a183cd/32.png) [@Allen\_Ingling](https://psychtoolbox.discourse.group/u/Allen_Ingling)\ **Post date:** [February 14, 2017, 8:15pm UTC](https://psychtoolbox.discourse.group/t/psych-toolbox-and-netstation-synchronization/124/1 "2017-02-14T20:15:43Z")
Hi, I am currently using NetStation to acquire EEG data and matlab and Psych toolbox to design an ERP experiment. There is an offset between the onset of the stimuli captured by the photosensor and the timestamp captured by my Matlab code with Psych toolbox.  Could you please let me know where I can input this offset in NetStation software? This way this error offset won't propagate long the processing and analysis of data and labels will be placed with the correct timestamp in real-time. Thanks, Katy Katy Tarrit, PhD Postdoctoral Researcher Rochester Institute of Technology 134 Lomb Memorial Dr Rochester, NY, 14623-5608