# Calibration during Experiment

**URL:** <https://psychtoolbox.discourse.group/t/calibration-during-experiment/1101>\
**Category:** Uncategorized\
**Created:** [September 26, 2008, 5:08pm UTC](https://psychtoolbox.discourse.group/t/calibration-during-experiment/1101 "2008-09-26T17:08:51Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![michael.hegenloh](https://avatars.discourse-cdn.com/v4/letter/m/ecb155/32.png) [@michael.hegenloh](https://psychtoolbox.discourse.group/u/michael.hegenloh)\
**Post date:** [September 26, 2008, 5:08pm UTC](https://psychtoolbox.discourse.group/t/calibration-during-experiment/1101/1 "2008-09-26T17:08:51Z")

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Hello,  
  
I am using an Eyelink 1000 eyetracker and wanted to know if it is  
useful to do calibration during an experiment (after some blocks)? Or  
for a gaze dependent display after not fixating the fixation cross for  
some time! Or is it better to just split the experiment in many parts?  
  
Do you have any ideas on that?  
  
Thanks a lot,  
  
Michael