<p class="MsoNormal">Dear All,</p>
<p class="MsoNormal"> </p>
<p class="MsoNormal">I am investigating the relationship between Attention and
Memory and would like to use the Contralateral Delay Activity (CDA) as a
correlate of the visual working memory. I am dealing with the bin operations
function.</p>
<p class="MsoNormal">I would like to check through the Discussion list if anyone
who is familiar with the CDA knows I am using the right coding to get my CDA
component across three different conditions.</p>
<p class="MsoNormal">I am investigating 3 different pair of electrodes (p3-4,
o1-2 and p7-8) for correct and incorrect responses. However I am not sure if I
need to filter out the incorrect trials.</p>
<p class="MsoNormal"> </p>
<p class="MsoNormal">Thank you</p>
<p class="MsoNormal" style="margin-bottom:0cm;margin-bottom:.0001pt;line-height:normal;text-autospace:none"><span style="font-size:10.0pt;font-family:"Courier New";color:black">ERP = pop_binoperator( ERP, {</span><span style="font-size:10.0pt;font-family:"Courier New";color:#a020f0">'LH = [18 23
24]'</span><span style="font-size:10.0pt;font-family:"Courier New";color:black">
</span><span style="font-size:10.0pt;font-family:"Courier New";color:#a020f0">'RH
= [14 28 27]'</span><span style="font-size:10.0pt;font-family:"Courier New";color:black"> </span><span style="font-size:10.0pt;font-family:"Courier New";color:#a020f0">'nb1= b1@RH-b1@LH label CDA LVF20'</span><span style="font-size:10.0pt;font-family:"Courier New";color:black"> </span><span style="font-size:10.0pt;font-family:"Courier New";color:#a020f0">'nb2= b2@LH-b2@RH label CDA
RVF20'</span><span style="font-size:10.0pt;font-family:"Courier New";color:black"> </span><span style="font-size:10.0pt;font-family:"Courier New";color:#a020f0">'nb3= b3@RH-b3@LH label CDA LVF40'</span><span style="font-size:10.0pt;font-family:"Courier New";color:black"> </span><span style="font-size:10.0pt;font-family:"Courier New";color:#a020f0">'nb4= b4@LH-b4@RH label CDA
RVF40'</span><span style="font-size:10.0pt;font-family:"Courier New";color:black"> </span><span style="font-size:10.0pt;font-family:"Courier New";color:#a020f0">'nb5= b5@RH-b5@LH label CDA LVF22'</span><span style="font-size:10.0pt;font-family:"Courier New";color:black"> </span><span style="font-size:10.0pt;font-family:"Courier New";color:#a020f0">'nb6= b6@LH-b6@RH label CDA
RVF22'</span><span style="font-size:10.0pt;font-family:"Courier New";color:black">});</span><span style="font-size:12.0pt;font-family:"Courier New""></span></p>
<p class="MsoNormal" style="margin-bottom:0cm;margin-bottom:.0001pt;line-height:normal;text-autospace:none"><span style="font-size:10.0pt;font-family:"Courier New";color:black"><span style>
</span></span><span style="font-size:12.0pt;font-family:"Courier New""></span></p>
<p class="MsoNormal">This gives me 6 bins, 2 per each of the 3 conditions. Each pair
gives me erp for either left visual field (LVF) or right visual field (RVF).</p>
<p class="MsoNormal"> </p>
<p class="MsoNormal">To get the CDA I now subtract <span style> </span>the activity between left and right visual
field trials for all of the 3 conditions:</p>
<p class="MsoNormal" style="margin-bottom:0cm;margin-bottom:.0001pt;line-height:normal;text-autospace:none"><span style="font-size:10.0pt;font-family:"Courier New";color:black">ERP = pop_binoperator( ERP, {</span><span style="font-size:10.0pt;font-family:"Courier New";color:#a020f0">'nbin1= b1-b2
label CDA 2T0D'</span><span style="font-size:10.0pt;font-family:"Courier New";color:black"> </span><span style="font-size:10.0pt;font-family:"Courier New";color:#a020f0">'nbin2=b3-b4 label CDA 4T0D'</span><span style="font-size:10.0pt;font-family:"Courier New";color:black"> </span><span style="font-size:10.0pt;font-family:"Courier New";color:#a020f0">'nbin3=b5-b6 label CDA 2T2D'</span><span style="font-size:10.0pt;font-family:"Courier New";color:black"> }); </span><span style="font-size:12.0pt;font-family:"Courier New""></span></p>
<p class="MsoNormal"> </p>
<p class="MsoNormal">This gives me 3 CDA component, one for each condition.</p>
<p class="MsoNormal"> </p>
<p class="MsoNormal">Does anyone know if this is correct to compute the CDA?</p>
<p class="MsoNormal"> </p>
<p class="MsoNormal">Thank you </p>
<p class="MsoNormal"> </p>
<p class="MsoNormal">Thanks to everyone</p><p class="MsoNormal">Massimiliano Papera<br></p>