After the recent announcement of the channel interpolation bug in previous versions of EEGLAB 9, I updated from v.9.0.4.5s to v.9.0.5.6.b. However, I now seem to be experiencing an interpolation bug with the new version, even when using datasets in which no channels have been removed.<div>
<br></div><div>For testing purposes, I created a study with a single subject, with all (32) channels intact. In the attached PDF are topographic plots from v.9.0.4.5s and v.9.0.5.6.b, with channel interpolation both on and off. It seems that although this subject has no missing channels, keeping the "spherical interpolation of missing channels" check box selected when pre-computing the subject data scrambles the topography of the channels (this check box is selected by default). I've had similar results in v.9.0.5.6.b when pre-computing data in a study in which some subjects had channels removed.<div>
<br></div><div>Has anyone else had similar issues? While this subject has all of their channels intact, 2 artifactual ICs were removed from the dataset prior to creation of the .study.</div><div><br></div><div>thanks</div>
<div>Dan</div><div><br></div><div>Daniel Roberts</div><div>Graduate Student</div><div>Human Factors and Applied Cognition</div><div>George Mason University</div><div><br></div></div>