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<p class="MsoNormal">Dear all,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I am analysing data from a MMN oddball experiment with:<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Standards, 1000Hz 50ms tone; and deviant, 1000Hz, 100ms<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">The SOA is a random 500-600ms, so includes the tones (i.e. doesn't get longer when the duration is longer). <o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I want to calculate ERPs and ITC. What duration would you recommend for a baseline?<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I am trying to avoid subtracting as much experimental related activity as possible, and as I am focusing on the MMN which occurs fairly early (let’s say before 300ms), I wondered if I should subtract a -100ms baseline. Is this long enough
for ITC. Sampling rate is 1000Hz, in most of data (I have 600 datasets, and 10% used 256Hz which of course I have used different filter lengths for etc.). Ideally I would look at the P3 but my trials may not be long enough.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Thank you,<o:p></o:p></p>
<p class="MsoNormal">Jumana <o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal" style="background:white"><b><span style="font-size:10.0pt;color:#1F497D;mso-fareast-language:EN-GB">------------------------------------------</span></b><span style="font-family:"Helvetica",sans-serif;color:black;mso-fareast-language:EN-GB"><o:p></o:p></span></p>
<p class="MsoNormal" style="background:white"><b><span style="font-size:10.0pt;color:#1F497D;background:#FFEE94;mso-fareast-language:EN-GB">Jumana Ahmad</span></b><span style="font-family:"Helvetica",sans-serif;color:black;mso-fareast-language:EN-GB"><o:p></o:p></span></p>
<p class="MsoNormal" style="background:white"><span style="font-size:10.0pt;color:#1F497D;mso-fareast-language:EN-GB">Post-Doctoral Research Worker in Cognitive Neuroscience </span><span style="font-family:"Helvetica",sans-serif;color:black;mso-fareast-language:EN-GB"><o:p></o:p></span></p>
<p class="MsoNormal" style="background:white"><span style="font-size:10.0pt;color:#1F497D;mso-fareast-language:EN-GB">Room M1.09. Department of Forensic and Neurodevelopmental Sciences (PO 23) | Institute of Psychiatry, Psychology & Neuroscience | King’s College
London | 16 De Crespigny Park | London SE5 8AF</span><span style="font-family:"Helvetica",sans-serif;color:black;mso-fareast-language:EN-GB"><o:p></o:p></span></p>
<p class="MsoNormal" style="background:white"><span style="font-size:10.0pt;color:#1F497D;mso-fareast-language:EN-GB"> </span><span style="font-family:"Helvetica",sans-serif;color:black;mso-fareast-language:EN-GB"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;color:#1F497D;mso-fareast-language:EN-GB">***************************************************************************************<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;color:#1F497D;mso-fareast-language:EN-GB">***************************************************************************************<o:p></o:p></span></p>
<p class="MsoNormal"><b><span style="font-size:10.0pt;color:#1F497D;mso-fareast-language:EN-GB">We are currently looking for volunteers with mild intellectual disability to be part of our exciting and world-leading European project into brain development and
social behaviour. Please, do get in touch if you know of anyone who may be interested in taking part.
</span></b><span style="font-size:10.0pt;color:#1F497D;mso-fareast-language:EN-GB"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;color:#1F497D;mso-fareast-language:EN-GB">***************************************************************************************<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;color:#1F497D;mso-fareast-language:EN-GB">***************************************************************************************<o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
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