<div dir="ltr"><div style="outline:none"><div style="margin-bottom:0px;border-right-width:0px;border-bottom-width:0px;border-left-width:0px;border-top-left-radius:0px;border-top-right-radius:0px;border-bottom-right-radius:0px;border-bottom-left-radius:0px;width:621.1111450195313px;float:none!important"><div style="padding-top:0px;border-right-width:0px;border-bottom-width:0px;border-left-width:0px;border-bottom-color:rgb(216,216,216);border-top-color:rgb(216,216,216);border-top-left-radius:0px;border-top-right-radius:0px;border-bottom-right-radius:0px;border-bottom-left-radius:0px;margin-bottom:0px;margin-left:0px;margin-right:0px"><div style="padding-bottom:20px;padding-left:8px"><div style="font-family:arial,sans-serif;font-size:medium;margin-left:44px"><div style="font-size:13.333333969116211px;margin-bottom:0px;margin-left:0px;padding-bottom:5px"><div style="overflow:hidden"><div dir="ltr"><div><br></div></div></div></div></div><div style="font-family:arial,sans-serif;font-size:medium;margin-left:44px"><div style="font-size:13.333333969116211px;margin-bottom:0px;margin-left:0px;padding-bottom:5px"><div style="overflow:hidden"><div dir="ltr"><div>Dear All,</div><div><br></div></div></div></div></div><div style="margin-left:44px"><div style="margin-bottom:0px;margin-left:0px;padding-bottom:5px"><div style="font-family:arial,sans-serif;font-size:13.333333969116211px;overflow:hidden">I  hope that some of you have experience with construction of electric shielding room for your EEG experiments. I am negotiating with shieldroom companies for our new EEG lab.</div><div style="font-family:arial,sans-serif;font-size:13.333333969116211px;overflow:hidden">I would like to know how to interpret the shielding cutoff specifications. </div><div style="font-family:arial,sans-serif;font-size:13.333333969116211px;overflow:hidden">I have received various shielding specifications as follows. I know 40dB would be sufficient for our purpose, but I would like to know what does the cutoff in Hz represent. </div><div style="font-family:arial,sans-serif;font-size:13.333333969116211px;overflow:hidden"><br></div></div></div><div style="margin-left:44px"><div style="margin-bottom:0px;margin-left:0px;padding-bottom:5px"><div style="font-family:arial,sans-serif;font-size:13.333333969116211px;overflow:hidden"><span style="font-family:'Times New Roman',serif;font-size:11pt">100K-30MHz / 40dB</span><br></div></div></div><div style="margin-left:44px"><div style="margin-bottom:0px;margin-left:0px;padding-bottom:5px"><div style="overflow:hidden"><span lang="EN-US" style="font-size:11pt;font-family:'Times New Roman',serif"><span lang="EN-US" style="font-size:11pt;font-family:'Times New Roman',serif">10-30MHz  / 80dB</span><br></span></div></div></div><div style="font-family:arial,sans-serif;font-size:medium;margin-left:44px"><div style="font-size:13.333333969116211px;margin-bottom:0px;margin-left:0px;padding-bottom:5px"><div style="overflow:hidden"><div dir="ltr"><div><span lang="EN-US" style="font-size:11pt;font-family:'Times New Roman',serif">500k-500MHz / 40dB</span><br></div><div><br></div></div></div></div></div><div style="font-family:arial,sans-serif;font-size:medium;margin-left:44px"><div style="font-size:13.333333969116211px;margin-bottom:0px;margin-left:0px;padding-bottom:5px"><div style="overflow:hidden">Best,</div><div style="overflow:hidden">Archana</div></div></div><div style="font-family:arial,sans-serif;font-size:medium;margin-left:44px"><div style="font-size:13.333333969116211px;margin-bottom:0px;margin-left:0px;padding-bottom:5px"><div style="overflow:hidden"><br></div><div style="overflow:hidden"><br></div><div style="overflow:hidden"><br></div></div></div><div style="font-family:arial,sans-serif;font-size:medium;margin-left:44px"><div style="font-size:13.333333969116211px;margin-bottom:0px;margin-left:0px;padding-bottom:5px"><div style="overflow:hidden"><div dir="ltr"><div><br></div><div>__________________________________________</div><div><div style="font-size:13px"><div>Archana Singh, </div><div>ERATO Researcher,</div><div>Functional and Chemosensory brain imaging group</div><div>Department of Applied Biological Chemistry</div><div>Graduate School of Agricultural and Life Sciences</div><div>The University of Tokyo, Tokyo 113-8657</div><div><br></div></div></div></div><div></div></div></div><div></div></div><div style="font-family:arial,sans-serif;font-size:medium"></div></div><div style="font-family:arial,sans-serif;font-size:13.333333969116211px;border-bottom-left-radius:0px;border-bottom-right-radius:0px;border-top-style:none;background-image:initial"><div><div style="margin-right:5px;padding-left:0px"></div></div></div></div></div></div><div style="font-family:arial,sans-serif;font-size:medium;outline:none"><div style="margin-bottom:0px;border-right-width:0px;border-bottom-width:0px;border-left-width:0px;border-top-left-radius:0px;border-top-right-radius:0px;border-bottom-right-radius:0px;border-bottom-left-radius:0px;width:621.1111450195313px;float:none!important"><div style="padding-top:0px;border-right-width:0px;border-bottom-width:0px;border-left-width:0px;border-bottom-color:rgb(216,216,216);border-top-color:rgb(216,216,216);border-top-left-radius:0px;border-top-right-radius:0px;border-bottom-right-radius:0px;border-bottom-left-radius:0px;margin-bottom:0px;margin-left:0px;margin-right:0px"><div><div style="padding-bottom:20px;padding-left:8px"><div><div></div></div></div><div style="padding-bottom:20px;padding-left:8px"><br></div><div style="padding-bottom:20px;padding-left:8px"><br></div></div></div></div></div></div>