Re: [psychopy-users] Aduitory oddball task using 1.76.00

[Jonathan Peirce]

What I'd be concerned about here is the precision of audio start times.
For ERP recordings I imagine you need the audio onsets to be very
precise. Or are you going to use the sound itself as a trigger for your ERP?

On 08/03/2013 14:56, aspo...@gmail.com wrote:
> So sorry to bother you all but I am trying to set up a simple auditory
> oddball task. I'm a clinican, not a researcher. I just want a simple
> oddball task to use for ERP's. I have read the documentation and
> viewed the video. I get the loop, trial, and excel spreadsheet. I
> however, panick as soon as look at the sound window lol. My goal is to
> use the stimulation in psychopy with Emotive EEG. I have been trying
> to figue things out in builder. I have the following protocol: 1
> block, stimuli, Standard Tones (566) 1000 Hz 175-ms with 10-ms rise
> and fall time, 85% of trials; Defiant tones (100) 1,200 Hz 175-ms
> 10-ms rise and fall time, 15% of trials; hit space bar everytime a
> persone hears the deviant tone (1,200 Hz). After 3 standard tones
> (first three trials) the presentation of deviant tones was randomly
> seperated by 3-35 standard tones. The stimuli needs to be seperated by
> a jittered stimulus-onset synchrony of 0.9-1.1 sec to minimize the ERP
> related to the ancticipation of stimulus. This protocol came for the
> article Validation of Emotiv EEG gaming system for measuring research
> quality auditory ERPs. I hate to reinvent the wheel but at the very
> least if someone could just get me started in the right direction I
> would be very grateful.
> Best
> AJ Spoerner
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--
Jonathan Peirce
Nottingham Visual Neuroscience

http://www.peirce.org.uk/

[aspo...@gmail.com]

Thank very much for your response. Yes, tones are the trigger. I am not sure if I can send attachments but went I get back to the office I send you the article if that would help.

Kind regards
AJ Spoerner

[Nick Wan]

I'm interested in this thread because I'll be using an Emotiv wireless EEG headset as well and would like to know the best way to send markers to the program. I was thinking possibly using virual COM ports... but if there is a better way to send a marker, I'm all ears.

[Fabiana Ruggiero]

Hi, I'm Fabiana, a young resercher and a new memeber of this group. I would like to make a question about oddball paradigm. 

I have to record P300 ERP but i didn't found sounds with this characteristics. Someone can sent me a example sound?

Thank you very much.

Best 

Fabiana