<html><head><meta http-equiv="Content-Type" content="text/html charset=us-ascii"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class="">Hi,<div class=""><br class=""></div><div class="">Recently every few Biosemi bdf files that we import into eeglab (using BIOSIG toolbox) have lost data at some point in the file (e.g., around about 50 minutes into the recording). I mean completely gone, just zero in all the channels and no events. When I converted the same bdf files to edf files and imported those into eeglab using identical settings there was no lost data. The attached images show the same data at the same time point, imported from edf (intact) and bdf (data loss).</div><div class=""><br class=""></div><div class="">Any ideas? This problem appeared after we switched to Windows 7 and started using a newer version of Actiview for acquisition. </div><div class=""><br class=""></div><div class="">Here are some details:</div><div class=""><br class=""></div><div class="">Actiview system:</div><div class="">Windows 7 Professional</div><div class="">Actiview 7.05</div><div class="">64 channel</div><div class="">1024 Hz</div><div class=""><br class=""></div><div class="">eeglab system:</div><div class="">OSX</div><div class="">MATLAB 2013a</div><div class="">eeglab v13.6.5b (same issue with older version of 13 as well)</div><div class="">imported with mastoid references</div><div class=""><br class=""></div><div class="">Biosemi provided bdf to edf converter using default settings (0.16 Hz high pass).</div><div class=""><br class=""></div><div class="">Thanks,</div><div class="">Mary</div><div class=""><img height="200" width="320" apple-width="yes" apple-height="yes" apple-inline="yes" id="AF76CA80-C1DB-4D10-93AB-6C77362C5F6F" src="cid:F047B108-A7A7-4481-9B20-DC8B2992CDEA@psych.ucsb.edu" class=""><img height="200" width="320" apple-width="yes" apple-height="yes" apple-inline="yes" id="1438AEF7-6A35-4DE0-9AD8-A29FE855837B" src="cid:343F361F-988E-4CCB-8D7B-304F1EFB48BF@psych.ucsb.edu" class=""></div></body></html>