Joe, I think you are probably correct. At some point in my unguided march=20 through the software I probably created a default Montage containing only=20 the famous seven channels. From that point forward, I became immersed in=20 sundry delusions about Man dominating Machine, while the reverse was=20 clearly the case. Darn ! I am pretty sure that when I tried to add a channel to the Seven Channel=20 Suite, I was unable to because all the candidates were greyed out (i.e.=20 inaccessible). This lends some real weight to your estimate that I have=20 somehow processed myself into a Seven Channel Default montage. I have some other duties this evening, but I will again be in my qEEG=20 cockpit tomorrow, and I will let you know how it turns out. Thank you for your perspective, and for the amendments to posting, since I= =20 tend to "be" whatever email address I last received a message on. Which=20 works as well for me, generally, as Default Montages do for WinEEG :) Dave Myer Boston Neurofeedback BTW: What connection do you have with Mitsar ? Once far enough removed from= =20 the US White House, no one would likely confuse Norway with St. Petersburg.= =20 And so, my curiosity was raised. At 12:18 AM 2/12/03 +0100, you wrote: >Dave, > > >Before I Mis-"adjusted" the software, it was running quite well,= actually. > >I had discovered that if I 2clicked on the EEG label for a particular > >channel, the display would simplify to show only that channel. I could= also > >get back to the full, nearly incomprehensible all-channel display. That= all > >seemed very nice. > > > >I explored the domain of the Montage menus for some time, > >The Montage menus can be found three places (not counting the status >bars) as far as I can see: >File->New file... displays Patient Card dialog: with tabs for Montage >parameters. (Changes here are NOT saved permanently, but only for the >file you are now opening.) >View-> Select montage... (changes are ONLY saved for the current file) >Setup-> Montage list... (Here is where you save your montages on a >more permanent basis. Any already open files will NOT show changes >you make here, until you close the files and open them again.) >The Montage parameters dialog are the same in all three locations, >which adds to the confusion about temporary and permanent changes. > > >eventually > >creating a new montage of my very own. I was so proud. It even seemed to > >show only the seven channels I had asked of it. > >Ah yes, the all-too-familiar feeling of man at last dominating >technology; the operant conditioning that keeps us at the screen into >the wee hours... :-) >There are two ways of showing just a few channels in the Setup-> >Montage list... : >hiding them (unchecking the check box in front of the channel) >deleting them (selecting a channel and pressing the "delete" button >at the bottom of the dialog) >You can record on a "hidden" channel, but not on a deleted one, as >far as I can see. > > > >I turned off the gear and > >padded off to bed. > > > >Next day, after laboring mightily for nearly an hour, I managed to get= all > >channels wired up to my live-in volunteer (Anita). I flipped off the > >electrode map that said all channels were hooked up > >The impedance map does not reflect how many channels the software is >recording. It always shows the 19 standard electrode placements. It >simply says how the amp is reading the impedance at each location, >and doesn=B4t care if the WinEEG montage is set up to use all the >channels or only a few. > > >, and tried to Monitor > >the streams of data I imagined were flowing from her head into the= machine. > >Seven channels showed up. Thirty mnutes of increasingly plaintive= inquiries > >from the Victim, and I still had only seven channels showing up. Didn't > >matter which montage I selected. > >Hmmm. Once you have recorded an EEG you can switch montages, but that >only changes your "view" of what you have recorded. If your 7 channel >montage* is set up as a default, (i.e. it is the one that shows >initially on the "patient card" in the File->New... dialog,) I >suspect you are stuck with 7 channels. I guess the trick is to select >the right montage upon opening a new file, or changing the default >montage. > >*(I am guessing that the the other channels are deleted, instead of= hidden.) > > >I released my captive and went to sleep. > >Tomorrow, I would break ranks with the engineering fraternity and read > >the manual. > > > >Chastened, after so much unaccustomed reading, I am forced to report I > >still have seven channels. Or only one. The menu screens pertaining to > >Montages have become dogeared almost as fast as the pages of the > >proverbial manual. What I seem to have missed is how to restore missing > >channels to the various tabs in the Montage menu. > >Open the WinEEG without opening any files. The Setup->Montage list... >is available. Select the montage you want to edit and click on the >"add" button in the bottom of the dialog. You get a new channel, >which you have to edit regarding placement, gain and a few other >parameters. > >How do you set the default montage? The last montage you look at in >Setup->Montage list.. becomes your default. > >Suggestions for the next version of WinEEG: >A dialog for changing the default montage would be a nice touch. >Also the program should clearly advise when changes to the montage >parameters are permanent or just for that particular recording. >The impedance map could also show the current montage, with unused >channels grayed out. That would be a valuable feedback, and a double >check that the correct montage is used. >Rename the 24 stored montages that come originally with the WinEEG. >(BTW It isn=B4t mentioned in the manual, but I think you can have 24 >montages stored. You can=B4t add or delete a montage, but you can >rename them, and add/delete channels, Renaming them when you edit >them is a good idea. Actually it would be a smart move if the >montages came with sensible names and numbering: i.e. 01 >Referential, 02 Referential, 03 Sequential average... up to 24 >Monopolar. Actually calling the montages referential (instead of >monopolar) and sequential (instead of bipolar) would be more precise >and informative, I think.) > > > Everything I find in the > >manual works the way they say it works. I freely admit that I am more of= a > >"How do I make it do this?" kinda person, as compared with a "This is= what > >happens when you press the pruple button" type. So the answer could be > >staring smack out of the page, and I just missed it. > > > >Your suggestions are warmly invited. > > > >Dave Myer > >Boston Neurofeedback > >Man vs. Technology: deuce again! >I hope this was of some help. > >BTW I changed the mailing-list so that anyone can post to it, not >just list-members. Some of us post from different mail adresses, and >it makes sense not to have a list full of e-mail aliases, or having >to wait around in cyberspace for moderator approval. > >Joe > >-- >Joe