LRP recording

[gethin]

Hi,
Our department has recently begun using the biosemi active two system and I wandering if anyone had any suggetsions with regard measurement of the Lateralised Readiness Potential. I have tried simply attaching a 2 of the extra electrodes under the cap at positions C3' and C4' (1cm anterior to C3 and C4) and although the recording has come out ok I am slightly worried about the accuracy of the electrode positioning and the difficulty in measuring the precise location each time. Does anyone have any suggestions, or can BioSemi provide caps with the additional electrode holes in these locations.
Many Thanks
Gethin Hughes

Department of Psychology
Goldsmiths College, University of London
United Kingdom

[Coen]

You can order some extra electrode holders from us, and mount them at the preferred locations in the cap yourself (see http://www.biosemi.com/faq/make_headcap.htm). Use some pin type active electrodes with touchproof connector for these extra channels.

Best regards, Coen (BioSemi)