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</o:shapelayout></xml><![endif]--></head><body lang=EN-GB link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D;mso-fareast-language:EN-US'>Hi Ryan, et al.,<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D;mso-fareast-language:EN-US'><o:p> </o:p></span></p><p class=MsoNormal><a name="_MailEndCompose"><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D;mso-fareast-language:EN-US'>What is “this post”? AFAIK, most people have successfully sent triggers using E-Prime (that’s probably why there are few messages suggesting anything else!), accurately timed, and indeed, the number of publications with EEG and E-Prime must be in the hundreds by now. I have never had a problem with out of sync triggers myself. In general, you always set triggers, and the software used for recoding is insignificant – of course you can change them with MATLAB (using whatever toolbox, e.g. SPM, EEGLAB), but that doesn’t change timing. In general, any EEG amp worth its salt will come with dedicated E-Prime packaged – find them on their website. In other words: post-hoc labelling isn’t an alternative: it’s just a way that you change “124” – the byte sent over parallel port, for instance, to “Stimulus Onset, VERB”.<o:p></o:p></span></a></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D;mso-fareast-language:EN-US'>In general, I use two types of triggers:<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D;mso-fareast-language:EN-US'>*Timing critical: particularly onset of the stimulus. You can use the “.onsetsignalenabled” (not sure about the exact phrase, being out of office at the moment) and so on for that (search here or elsewhere). Only needs to be a bit – the stimulus is ON NOW. This you need to code before the stimulus X happens (e.g. X.onsetsignalenabled). E-Prime then ensures the trigger is sent at the time the monitor refreshes, rather than at some other odd moment that isn’t related to the stimulus.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D;mso-fareast-language:EN-US'>*Timing non-critical: data, in other words. I send loads of data nowadays with the following:<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D;mso-fareast-language:EN-US'>Writeport outport, 254<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D;mso-fareast-language:EN-US'>Sleep 1 ‘sleep is necessary because triggers can overwrite one another. <o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D;mso-fareast-language:EN-US'> ‘…Then start writing all sorts of more bytes<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D;mso-fareast-language:EN-US'>For i = 2 to 100,<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D;mso-fareast-language:EN-US'> Writeport outport, i<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D;mso-fareast-language:EN-US'> Sleep 1<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D;mso-fareast-language:EN-US'> Writeport outport, 0 ‘to avoid problems with repetitions.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D;mso-fareast-language:EN-US'> Sleep 1<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D;mso-fareast-language:EN-US'>Next i<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D;mso-fareast-language:EN-US'>‘ Ending with <o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D;mso-fareast-language:EN-US'>Writeport outport, 255<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D;mso-fareast-language:EN-US'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D;mso-fareast-language:EN-US'>(search for outport elsewhere). <o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D;mso-fareast-language:EN-US'>The deal is that afterwards, you concatenate the data in between (the …then start writing bit, here resulting in trigger values 2 to 100 being send), so that basically, you can afterwards always recode the Timing critical event using the triggers that precede it. <o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D;mso-fareast-language:EN-US'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D;mso-fareast-language:EN-US'>Hope that helps. <o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D;mso-fareast-language:EN-US'>Best,<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D;mso-fareast-language:EN-US'>Michiel<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D;mso-fareast-language:EN-US'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D;mso-fareast-language:EN-US'><o:p> </o:p></span></p><p class=MsoNormal><b><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif"'>From:</span></b><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif"'> e-prime@googlegroups.com [mailto:e-prime@googlegroups.com] <b>On Behalf Of </b>armina<br><b>Sent:</b> 31 August 2014 14:29<br><b>To:</b> e-prime@googlegroups.com<br><b>Subject:</b> Re: Eprime triggers to EEG out of sync<o:p></o:p></span></p><p class=MsoNormal><o:p> </o:p></p><div><p class=MsoNormal>Hi Ryan,<o:p></o:p></p><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>A few years ago we did it, it's quite simple. Now I am far from my working place and from the needed computer so I cannot tell you the exact InLine and the rest but the idea is the following. We've sent TTL signals from the lamps (you have 5 lamps on the SRB, just flash/sleep them). Each lamp signal was going to a separate channel. So, you have 5 channels to code/mark whatever you want. You may vary duration of the signal, number of the signals, duration between the TTL signals, and the channel. it gives you practically unlimited number of different markers :) you can have several markers for each trial and you never get lost in them. each channel can be set for something particular, say, one channel for sentence onset, another for specific components within the sentence (with each component having its specific marker), etc. This system was easy to structure and to use. Hope it helps.<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>good luck,<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>armina<br><br><br>On Sunday, 31 August 2014 00:05:53 UTC+3, Ryan Blything wrote:<o:p></o:p></p><blockquote style='border:none;border-left:solid #CCCCCC 1.0pt;padding:0cm 0cm 0cm 6.0pt;margin-left:4.8pt;margin-right:0cm'><div><div><div><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif";color:black'>Hi everyone,<o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif";color:black'><o:p> </o:p></span></p></div><div><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif";color:black'>I came across this post because I am going to be trying a similar thing in my experiment such that we will be using e-prime v.1 to present audio stimuli and we are interested in setting markers so that they are not just at the onset of stimuli - but also at a number of specific points in each sentence (e.g. onset of the verb, noun, preposition). This would require having several markers for each trial and Im wondering about the best way to go about this? One way is through code but no one seems to have managed to do this successfully that Im aware of. How did it go for any of you? Im quite new to e-prime and SPM (which we will use to analyse data) so I would appreciate any advice before I continue.<o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif";color:black'><o:p> </o:p></span></p></div><div><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif";color:black'>An alternative option Ive heard about is post-hoc labelling, which would be done in SPM, post-hoc working from the onset triggers provided by e-prime (and psuedo-marking points later in the sentence). Im not very familiar with SPM but a</span><span style='font-size:10.0pt'>m I right in thinking that as long as the onset of the sentence is marked accurately, then we can - post hoc - set markers anywhere we want in the data thereafter? This may be the most ideal solution because I have 200 sentences, each of which must be labelled separately (so that I can recognise each one). Apparently e-prime is limited to sending out 250 labels so perhaps post-hoc multiple labelling is the answer. I would appreciate any thoughts any of you may have.</span><o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal><span style='font-size:10.0pt'>Many Thanks,</span><o:p></o:p></p></div><div><p class=MsoNormal><span style='font-size:10.0pt'>Ryan</span><o:p></o:p></p></div></div></div></blockquote></div></div><p class=MsoNormal>-- <br>You received this message because you are subscribed to the Google Groups "E-Prime" group.<br>To unsubscribe from this group and stop receiving emails from it, send an email to <a href="mailto:e-prime+unsubscribe@googlegroups.com">e-prime+unsubscribe@googlegroups.com</a>.<br>To post to this group, send email to <a href="mailto:e-prime@googlegroups.com">e-prime@googlegroups.com</a>.<br>To view this discussion on the web visit <a href="https://groups.google.com/d/msgid/e-prime/4e6b3a82-db1f-47e6-a117-4b295c554620%40googlegroups.com?utm_medium=email&utm_source=footer">https://groups.google.com/d/msgid/e-prime/4e6b3a82-db1f-47e6-a117-4b295c554620%40googlegroups.com</a>.<br>For more options, visit <a href="https://groups.google.com/d/optout">https://groups.google.com/d/optout</a>.<o:p></o:p></p></div></body></html>
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