BioSemi.nl

Dear Coen, we are measuring ABRs in our lab with BioSemi ABR electrodes. We finally have pretty clean ABR measurements. However, now that we are analysing data from a study, I am doubting whether we are labeling the peak in the right way. The wave V latency is quite early with 90dB clicks if we inte...

The problem may be that your trigger generator does not switch the separate lines (bits) within one sample period (62 microsecond). Try using trigger values that switch only one line, e.i. 1,2,4,8,16,32,64 and 128. High (unconnected) lines 9-16 do not cause false triggers. Best regards, Coen (BioSe...

Hi Coen,

your suggestion resulted in zero unwanted triggers with 24000 samples. That is great. However, we need more than 8 trigger codes. Do you have any idea how we could make this happen?

Best,
Nathan

Thanks for the quick reply and suggestion. I will check whether this resolves the issue coming week and report back.

Kind regards,
Nathan

Dear sir, madam, recently we have acquired the ABR cord and input and have been able to record decent ABRs using a stimulus with fixed intensity and a single triggercode (sent synchronously with the click onset). We are now also able to present clicks with different amplitudes and different triggerc...