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</o:shapelayout></xml><![endif]--></head><body lang=EN-AU link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Hi all,<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>I am currently examining the EEG response to certain exercise bouts. We only have a 256Hz system and are currently using 30sec data sample window. As you discuss below this may not improve the information because of the variability of the signal... on top of which exercise clearly adds to the level of noise... I have only read in one paper that the minimal suggested sample window during exercise is 20secs of data but does anyone have any other suggestions?<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Many thanks<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Caroline<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><div><div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0cm 0cm 0cm'><p class=MsoNormal><b><span lang=EN-US style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span lang=EN-US style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> eeglablist-bounces@sccn.ucsd.edu [mailto:eeglablist-bounces@sccn.ucsd.edu] <b>On Behalf Of </b>Pål Gunnar Larsson<br><b>Sent:</b> Thursday, 22 May 2014 4:33 PM<br><b>To:</b> 'Samaneh Valipour'; mmiyakoshi<br><b>Cc:</b> eeglablist@sccn.ucsd.edu<br><b>Subject:</b> Re: [Eeglablist] Number of samples<o:p></o:p></span></p></div></div><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><span lang=NO-BOK style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Remember that EEG is a very dynamic signal. Hence, longer samples is not expected to give better information as the signal changes within the sample window. However, increasing the sampling rate, increases the information. According to Nyquist you will be able to reconstruct a signal if you sample faster than the double of the highest frequency in the signal. However, that is when the signal is stable (EEG is not) and the sample is infinite long. Practically you will often end up sampling 5-10 time the highest frequency in biological signals.</span><span lang=NO-BOK><o:p></o:p></span></p><p class=MsoNormal><span lang=NO-BOK style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'> </span><span lang=NO-BOK><o:p></o:p></span></p><p class=MsoNormal><span lang=NO-BOK style='font-size:10.5pt;font-family:"Calibri","sans-serif";color:#1F497D'>Pål G. Larsson M.D., PhD.</span><span lang=NO-BOK><o:p></o:p></span></p><p class=MsoNormal><span lang=NO-BOK style='font-size:10.5pt;font-family:"Calibri","sans-serif";color:#1F497D'>Head of Clinical Neurophysiology</span><span lang=NO-BOK><o:p></o:p></span></p><p class=MsoNormal><span lang=NO-BOK style='font-size:10.5pt;font-family:"Calibri","sans-serif";color:#1F497D'>Department of Neurosurgery</span><span lang=NO-BOK><o:p></o:p></span></p><p class=MsoNormal><span lang=NO-BOK style='font-size:10.5pt;font-family:"Calibri","sans-serif";color:#1F497D'>Division of Surgery and Clinical Neuroscience</span><span lang=NO-BOK><o:p></o:p></span></p><p class=MsoNormal><span lang=NO-BOK style='font-size:10.5pt;font-family:"Calibri","sans-serif";color:#1F497D'> </span><span lang=NO-BOK><o:p></o:p></span></p><p class=MsoNormal><span lang=NO-BOK style='font-size:10.5pt;font-family:"Calibri","sans-serif";color:#1F497D'>Oslo University Hospital</span><span lang=NO-BOK><o:p></o:p></span></p><p class=MsoNormal><span lang=NO-BOK style='font-size:10.5pt;font-family:"Calibri","sans-serif";color:#1F497D'>Po.box 4950 Nydalen</span><span lang=NO-BOK><o:p></o:p></span></p><p class=MsoNormal><span lang=NO-BOK style='font-size:10.5pt;font-family:"Calibri","sans-serif";color:#1F497D'>0424 Oslo</span><span lang=NO-BOK><o:p></o:p></span></p><p class=MsoNormal><span lang=NO-BOK style='font-size:10.5pt;font-family:"Calibri","sans-serif";color:#1F497D'>Norway</span><span lang=NO-BOK><o:p></o:p></span></p><p class=MsoNormal><span lang=NO-BOK style='font-size:10.5pt;font-family:"Calibri","sans-serif";color:#1F497D'>Tel: (+47) 23074407</span><span lang=NO-BOK><o:p></o:p></span></p><p class=MsoNormal><span lang=NO-BOK style='font-size:10.5pt;font-family:"Calibri","sans-serif";color:#1F497D'>Mobile: (+47) 93429791</span><span lang=NO-BOK><o:p></o:p></span></p><p class=MsoNormal><span lang=NO-BOK style='font-size:10.5pt;font-family:"Calibri","sans-serif";color:#1F497D'>E-mail: <a href="mailto:pall@ous-hf.no">pall@ous-hf.no</a></span><span lang=NO-BOK><o:p></o:p></span></p><p class=MsoNormal><span lang=NO-BOK style='font-size:10.5pt;font-family:"Calibri","sans-serif";color:#1F497D'>not sensitive</span><span lang=NO-BOK><o:p></o:p></span></p><p class=MsoNormal><span lang=NO-BOK style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'> </span><span lang=NO-BOK><o:p></o:p></span></p><p class=MsoNormal><span lang=NO-BOK style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'> </span><span lang=NO-BOK><o:p></o:p></span></p><p class=MsoNormal><span lang=NO-BOK style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Dr. philos. Pål G. Larsson</span><span lang=NO-BOK><o:p></o:p></span></p><p class=MsoNormal><span lang=NO-BOK style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Seksjonsleder Klinisk nevrofysiologi</span><span lang=NO-BOK><o:p></o:p></span></p><p class=MsoNormal><span lang=NO-BOK style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Nevrokirurgisk avdeling</span><span lang=NO-BOK><o:p></o:p></span></p><p class=MsoNormal><span lang=NO-BOK style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Oslo Universitetssykehus</span><span lang=NO-BOK><o:p></o:p></span></p><p class=MsoNormal><span lang=NO-BOK style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Postboks 4950 Nydalen</span><span lang=NO-BOK><o:p></o:p></span></p><p class=MsoNormal><span lang=NO-BOK style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>0424 Oslo </span><span lang=NO-BOK><o:p></o:p></span></p><p class=MsoNormal><span lang=NO-BOK style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'> </span><span lang=NO-BOK><o:p></o:p></span></p><p class=MsoNormal><span lang=NO-BOK style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Tlf.: 23074407</span><span lang=NO-BOK><o:p></o:p></span></p><p class=MsoNormal><span lang=NO-BOK style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Mobil: 93429791</span><span lang=NO-BOK><o:p></o:p></span></p><p class=MsoNormal><span lang=NO-BOK style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'> </span><span lang=NO-BOK><o:p></o:p></span></p><p class=MsoNormal><span lang=NO-BOK style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>E-mail: <a href="mailto:pal.gunnar.larsson@ous-hf.no">pall@ous-hf.no</a></span><span lang=NO-BOK><o:p></o:p></span></p><p class=MsoNormal><span lang=NO-BOK style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'> </span><span lang=NO-BOK><o:p></o:p></span></p><p class=MsoNormal><span lang=NO-BOK style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Denne meldingen innholder ikke sensitiv informasjon som bryter med OUS sine regler for taushetsplikt</span><span lang=NO-BOK><o:p></o:p></span></p><p class=MsoNormal><span lang=NO-BOK style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'> </span><span lang=NO-BOK><o:p></o:p></span></p><div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0cm 0cm 0cm'><p class=MsoNormal><b><span lang=NO-BOK style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>Fra:</span></b><span lang=NO-BOK style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> <a href="mailto:eeglablist-bounces@sccn.ucsd.edu">eeglablist-bounces@sccn.ucsd.edu</a> [<a href="mailto:eeglablist-bounces@sccn.ucsd.edu">mailto:eeglablist-bounces@sccn.ucsd.edu</a>] <b>På vegne av</b> Samaneh Valipour<br><b>Sendt:</b> 21. mai 2014 06:58<br><b>Til:</b> mmiyakoshi<br><b>Kopi:</b> <a href="mailto:eeglablist@sccn.ucsd.edu">eeglablist@sccn.ucsd.edu</a><br><b>Emne:</b> Re: [Eeglablist] Number of samples</span><span lang=NO-BOK><o:p></o:p></span></p></div><p class=MsoNormal><span lang=NO-BOK> <o:p></o:p></span></p><div><p class=MsoNormal><span lang=NO-BOK>Thanks a lot Dear Makoto.<o:p></o:p></span></p></div><div><p class=MsoNormal style='margin-bottom:12.0pt'><span lang=NO-BOK> <o:p></o:p></span></p><div><p class=MsoNormal><span lang=NO-BOK>On Tue, May 20, 2014 at 10:03 PM, Makoto Miyakoshi <<a href="mailto:mmiyakoshi@ucsd.edu" target="_blank">mmiyakoshi@ucsd.edu</a>> wrote:<o:p></o:p></span></p><div><p class=MsoNormal><span lang=NO-BOK>Dear Samaneh,<o:p></o:p></span></p><div><p class=MsoNormal><span lang=NO-BOK> <o:p></o:p></span></p></div><div><p class=MsoNormal><span lang=NO-BOK>Samples you mean sampling points? Yes of course. The more sampling points you have, the better (i.e. smoother and more reliable) the results are.<o:p></o:p></span></p></div><div><p class=MsoNormal><span lang=NO-BOK> <o:p></o:p></span></p></div><div><p class=MsoNormal><span lang=NO-BOK>Makoto<o:p></o:p></span></p></div></div><div><p class=MsoNormal style='margin-bottom:12.0pt'><span lang=NO-BOK> <o:p></o:p></span></p><div><p class=MsoNormal><span lang=NO-BOK>2014-05-19 21:31 GMT-07:00 Samaneh Valipour <<a href="mailto:samanehvalipour61@gmail.com" target="_blank">samanehvalipour61@gmail.com</a>>:<o:p></o:p></span></p><div><div><div><p class=MsoNormal><span lang=NO-BOK style='font-size:10.0pt;font-family:"Arial","sans-serif";color:#783F04'>Dear EEGLAB users,</span><span lang=NO-BOK><o:p></o:p></span></p><div><p class=MsoNormal><span lang=NO-BOK style='font-family:"Arial","sans-serif";color:#783F04'>I would like to be sure,whether the results of analysis of EEG using FFT or DWT depend on the number of samples?If is so, what is best choice for number of samples?</span><span lang=NO-BOK style='font-family:"Arial","sans-serif";color:#888888'><br clear=all></span><span lang=NO-BOK><o:p></o:p></span></p><div><p class=MsoNormal><span lang=NO-BOK style='color:#888888'>-- </span><span lang=NO-BOK><o:p></o:p></span></p></div><div><div><p class=MsoNormal><b><span lang=NO-BOK style='font-size:10.5pt;font-family:"Arial","sans-serif";color:blue'>With very kind regards</span></b><b><span lang=NO-BOK style='color:blue'>,</span></b><span lang=NO-BOK style='color:#888888'><br><br></span><b><span lang=NO-BOK style='color:blue'>Samaneh .Valipour</span></b><span lang=NO-BOK style='color:#888888'><br><br></span><span lang=NO-BOK style='color:blue'>PhD research student: DOES_UOP_INDIA <br>--------------------------------------------------------------------<br></span><span lang=NO-BOK style='color:#888888'>*Post address: *University of Pune, <br> Pune Ganeshkhind, <br> Pune-411007 ,<br> Maharashtra, (India) *<br>Phone nos :*<a href="tel:%2B91-20-25699841" target="_blank">+91-20-25699841</a>,<a href="tel:%2B91-20-25691256" target="_blank">+91-20-25691256</a>,<a href="tel:%2B91-20-25601419" target="_blank">+91-20-25601419</a></span><span lang=NO-BOK><o:p></o:p></span></p></div><p class=MsoNormal><span lang=NO-BOK style='color:#888888'> </span><span lang=NO-BOK><o:p></o:p></span></p></div></div></div><p class=MsoNormal><span lang=NO-BOK> <o:p></o:p></span></p></div></div><p class=MsoNormal><span lang=NO-BOK>_______________________________________________<br>Eeglablist page: <a href="http://sccn.ucsd.edu/eeglab/eeglabmail.html" target="_blank">http://sccn.ucsd.edu/eeglab/eeglabmail.html</a><br>To unsubscribe, send an empty email to <a href="mailto:eeglablist-unsubscribe@sccn.ucsd.edu" target="_blank">eeglablist-unsubscribe@sccn.ucsd.edu</a><br>For digest mode, send an email with the subject "set digest mime" to <a href="mailto:eeglablist-request@sccn.ucsd.edu" target="_blank">eeglablist-request@sccn.ucsd.edu</a><o:p></o:p></span></p></div><p class=MsoNormal><span lang=NO-BOK style='color:#888888'><br><br clear=all></span><span lang=NO-BOK><o:p></o:p></span></p><div><p class=MsoNormal><span lang=NO-BOK> <o:p></o:p></span></p></div><p class=MsoNormal><span class=hoenzb><span lang=NO-BOK style='color:#888888'>-- </span></span><span lang=NO-BOK><o:p></o:p></span></p><div><p class=MsoNormal><span lang=NO-BOK style='color:#888888'>Makoto Miyakoshi<br>Swartz Center for Computational Neuroscience<br>Institute for Neural Computation, University of California San Diego</span><span lang=NO-BOK><o:p></o:p></span></p></div></div></div><p class=MsoNormal><span lang=NO-BOK><br><br clear=all><o:p></o:p></span></p><div><p class=MsoNormal><span lang=NO-BOK> <o:p></o:p></span></p></div><p class=MsoNormal><span lang=NO-BOK>-- <o:p></o:p></span></p><div><div><p class=MsoNormal><b><span lang=NO-BOK style='font-size:10.5pt;font-family:"Arial","sans-serif";color:blue'>With very kind regards</span></b><b><span lang=NO-BOK style='color:blue'>,</span></b><span lang=NO-BOK><br><br><b><span style='color:blue'>Samaneh .Valipour</span></b><br><br><span style='color:blue'>PhD research student: DOES_UOP_INDIA <br>--------------------------------------------------------------------<br></span>*Post address: *University of Pune, <br> Pune Ganeshkhind, <br> Pune-411007 ,<br> Maharashtra, (India) *<br>Phone nos :*+91-20-25699841,+91-20-25691256,+91-20-25601419<o:p></o:p></span></p></div><p class=MsoNormal><span lang=NO-BOK> <o:p></o:p></span></p></div></div></div>
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