Eye Tracking, Psychophysiology

Real-time integration of eye tracking and EEG

It is becom­ing more pop­u­lar to inte­grate eye track­ers direct­ly with EEG acqui­si­tion hard­ware (and soft­ware). As the com­pa­ny Advanced Neuro Technology reports, they have now cre­at­ed a real-time sys­tem inte­gra­tion of their ASA-LAB with Tobii eye track­ers.

Now, this sounds real­ly excel­lent as the two sys­tems now also share event infor­ma­tion (for exam­ple trig­ger data), which makes analy­sis even one step eas­i­er. Nevertheless, it would be real­ly inter­est­ing to know whether appli­ca­tion of an EOG becomes unnec­es­sary as blink infor­ma­tion (which shows as an arte­fact on the EEG record­ings and has to be elim­i­nat­ed before analy­sis) could be received from the eye track­er direct­ly.

Nevertheless on the web­site it still says that EOG could be acquired and relat­ed to oth­er psy­chophys­i­o­log­i­cal data (like EMG, res­pi­ra­tion and GSR). It also seems that any pro­cess­ing and trans­for­ma­tion of the data (like FFT or such) can­not be done in real-time and it post­processed for analy­sis. I kind of hope that Biosemi, whose ActiveTwo sys­tem we are cur­rent­ly using, are catch­ing on to the trend and in com­bi­na­tion to the Jazz eye track­er sup­port they already pro­vide, add sup­port for the IMHO supe­ri­or Tobii sys­tems.


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