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Hi Jukka, I will try the recommendations and fall back to version 2.2.10 if you don't mind sending the binary. Just out of curiosity how does one skip problematic time interval(s)? I tried -movecomp inter with the same result (exit 11), also note that I get the same result with st 4, 10, 30. regards, Kambiz ------------------------------------------------------------ Kambiz Tavabi PhD Institute for Learning & Brain Sciences 1715 Columbia Road N Portage Bay Building Box 357988 University of Washington Seattle, WA 98195-7988 Tel: 206-685-6173 ------------------------------------------------------------ On Tue, Apr 1, 2014 at 10:25 PM, Nenonen, Jukka <[log in to unmask]>wrote: > Hi Kambiz, > > > > This is an unfortunate bug in maxfilter version 2.2.15. It occurs when: > > - There is discrepancy of isotrak and initial hpifit in 1-2 coils, > and > > - HPI amplitude extraction or coil fitting fails repeatedly within > the tSSS buffer (here 4 s). > > > > We have a fix coming later this year, but I don't know the exact schedule > yet. > > > > You can try: 1) option hpicons to improve the initial consistency, 2) skip > the problematic time interval(s), or 3) use previous version (2.2.10). > > > > Installation of the new release wipes out 2.2.10, but I can send the > binary by email and you can execute it e.g. from $(HOME)/bin. > > > > Please report these problems also to [log in to unmask] > > > > Best regards, Jukka > > > > > > Jukka Nenonen | Method Development Manager > Elekta Oy > Box 34, FI-00531 Helsinki, Finland > Visiting Address: Siltasaarenkatu 18-20 A, Helsinki > Office: +358 9 756 24085 | Mobile: +358 400 249 557 | Fax: +358 9 756 > 24011 > [log in to unmask] | www.elekta.com > > > > *From:* Announcement for the Neuro MEG list [mailto: > [log in to unmask]] *On Behalf Of *Kambiz Tavabi > *Sent:* 1. huhtikuuta 2014 22:44 > *To:* [log in to unmask] > *Subject:* Maxfilter exits with code 11 - unable to extract HPI amp, > determine transformation > > > > Hi all, > > I am using MF version 2.2.15 on a MEG(306)+EEG(60) channels data set > acquired at 1 kHz, with 0.1-300 Hz band filter. > > I am encountering a Maxfilter failure (exit code 11) roughly halfway > through a combined tSSS and movement compensation procedure. Before exit > the program spits out: > > > > Note! Discrepancy of HPI coil 3 isotrak and hpifit is 10.4 mm! > > Note! Discrepancy of HPI coil 4 isotrak and hpifit is 6.8 mm! > > Warning: HPI amp extraction failed (t=325.000)! > > Warning: 2/4 acceptable hpi fits found, cannot determine the > transformation! (t = 349.000) > > Warning: 1/4 acceptable hpi fits found, cannot determine the > transformation! (t = 350.000) > > Warning: 1/4 acceptable hpi fits found, cannot determine the > transformation! (t = 351.000) > > Warning: 0/4 acceptable hpi fits found, cannot determine the > transformation! (t = 352.000) > > Simplex: nr of eval (1001) exceeds maximum (1000)! > > Warning: 0/4 acceptable hpi fits found, cannot determine the > transformation! (t = 353.000) > > Simplex: nr of eval (1001) exceeds maximum (1000)! > > Warning: 0/4 acceptable hpi fits found, cannot determine the > transformation! (t = 354.000) > > Simplex: nr of eval (1002) exceeds maximum (1000)! > > Warning: 0/4 acceptable hpi fits found, cannot determine the > transformation! (t = 355.000) > > Program died due to signal 11, all output files were deleted! > > Core dump disabled. > > > > The Maxfilter command and relevant arguments are: maxfilter-2.2 -v -f ... > -o ... -st 4 -corr 0.98 -in 8 -out 3 -regularize in -hpie 20 -hpig > 0.8 -origin 0 0 40 -movecomp -hpisubt amp -hpistep 200 -frame head. I'v > also tried using the arguments: -hpicoils 4, -st 60, -st 10 all with the > same result; in fact only with -hpcoils 4 & -st 4 can I get more > information (as above). I suspect the HPI coils failed at the indicated > time points and the head location cannot be determined for an appropriate > duration in the st buffer. Is this correct? More importantly, is there a > fix? apart from not doing movement compensation. > > > > Thanks in advance > > Kambiz > > > > > > > > > > ------------------------------------------------------------ > Kambiz Tavabi PhD > Institute for Learning & Brain Sciences > 1715 Columbia Road N > Portage Bay Building > Box 357988 > University of Washington > Seattle, WA 98195-7988 > Tel: 206-685-6173 > ------------------------------------------------------------ > > > ------------------------------ > Please consider the environment before printing this e-mail. > > The contents of this e-mail message (including any attachments) are > confidential to and are intended to be conveyed for the use of the > recipient to whom it is addressed only. If you receive this transmission in > error, please notify the sender of this immediately and delete the message > from your system. Any distribution, reproduction or use of this message by > someone other than recipient is not authorized and may be unlawful. >