Zhang Lab 1258949228|%e %b %Y, %H:%M %Z|agohover
We have run eight subjects so far. Sometimes, the audio connections are completely dissembled at the MRI room. Make sure to check audio through headset. If no sound is delivered, check the cable connections and the setup on neidrui computer in the console room before sending the subject in the MRI scanner.
Zhang Lab 1258948948|%e %b %Y, %H:%M %Z|agohover
Congratulations to Zach for receiving the UROP award for the fMRI study!
Zhang Lab, 1258948948|%e %b %Y, %H:%M %Z|agohover
Zhang Lab 1258948691|%e %b %Y, %H:%M %Z|agohover
AFNI and BrainVoyager will be installed on Zhanglab Mac (Intel-based 64 bit computer with 12 GB RAM, OS X 10.5) as of 11/21. BrainVoyager is still available on the Dell Precision Workstation as before. Running BrainVoyager requires the USB Key.
Other available brainimaging software on Mac: FSL, Freesurfer, MNE, SPM8, Matlab2008.
Dr. Philip Burton, co-investigator of the fMRI project on speech and voice processing, will give tutorials on fMRI data analysis.
Yang Zhang (guest) 1258393428|%e %b %Y, %H:%M %Z|agohover
Joint 159th ASA Meeting and Noise-Con 2010, Baltimore, Maryland, 19-23 April 2010
Partially overlaps with CNS 2010 meeting.
Yang Zhang (guest), 1258393428|%e %b %Y, %H:%M %Z|agohover
Zhang Lab 1257573733|%e %b %Y, %H:%M %Z|agohover
Digitization using head surface points for adjustment was successful. Exporting was limited to 3d coordinates. Nasion, LPA, RPA, GRND are included in the exported file. For ASA, these four channels should be deleted from the .elc file. For MNE, nasion, LPA, RPA are required.
MRI scans have very tight schedule. To save time, it is better to familiarize subjects with the screening, consent, payment, and handedness before they go to CMRR.
Yang Zhang (guest) 1257111051|%e %b %Y, %H:%M %Z|agohover
ASA4.7 upgrade is available through ANT web site. You can test all its features using the trial software on your own computer for up to 30 days.
The following lab computers have ASA4.7 installed, zhanglab02 (laptop), zhanglab03, zhanglab06, and zhang office computer.
Do not install any software (including official upgrade versions) on the lab computers without seeking permission. The upgrade versions (such as Windows 7 or Mac Snow Leopard) do not necessarily work with the current computer configuration and existing key software packages such as EEvoke, Eprime, Visual Studio, Matlab and toolboxes, etc.
Zhang Lab 1256964832|%e %b %Y, %H:%M %Z|agohover
This new format follows the popular monobook style. The program has not been tested with all major browsers. Firefox 3.0+ is recommended.
Zhang Lab, 1256964832|%e %b %Y, %H:%M %Z|agohover
Yang Zhang (guest) 1256878309|%e %b %Y, %H:%M %Z|agohover
Xsensor issue solved with new stylus pen and configuration. An updated protocol is used including the measurements for the fudicial points.
Yang Zhang (guest), 1256878309|%e %b %Y, %H:%M %Z|agohover
Yang (guest) 1250711526|%e %b %Y, %H:%M %Z|agohover
I will get it done today.
Zach (guest) 1250703443|%e %b %Y, %H:%M %Z|agohover
I will bring some towels on Friday but until then we need fresh towels!
James Stevens (guest) 1248814631|%e %b %Y, %H:%M %Z|agohover
On July 28th - red cap required fastfix for electrode C1.
Yang Zhang (guest) 1248582766|%e %b %Y, %H:%M %Z|agohover
The eevoke program might not be able to close itself. So please check the running processes after a couple of runs to see if there are multiple eevoke.exe running. If yes, you need to close all of them before running a new one. Sometimes, the input configuration for eevoke can be lost due to computer upgrade, new software installation or program crash. You need to make sure the button codes show up properly in the recording window in ASA . For technical support on eevoke, please ask Tess.
Zach (guest) 1247956885|%e %b %Y, %H:%M %Z|agohover
Be advised: For some reason eevoke will randomly begin opening itself 20 - 30 times. After opening an eevoke file, eevoke usually closes itself but a few times I would return from the booth to find that a number of eevoke programs are running. When this happens I press "Cnt+Alt+Dlt" and go "processes" organize alphabetically and "End Process" each of the open eevokes.
Note: Sometime when doing this the "left" and "right" arrow key used for response by the participant becomes unbound in eevoke. To fix this you must open eevoke and rebind the "left" and "right" keys withe the "hit left" and "hit right" options.
Yang Zhang (guest) 1247898990|%e %b %Y, %H:%M %Z|agohover
This problem is partially solved with ANT technical support. The final solution will be here soon. The previous data sets recorded using Xsensor system worked fine with MNE and dipole analysis. The new ASA4.6 version had some noticeable problems with the new interface for the NDI probe tool configuration. I am working with Jaap at ANT on this issue.
Yang Zhang (guest), 1247898990|%e %b %Y, %H:%M %Z|agohover
Yang Zhang (guest) 1247673619|%e %b %Y, %H:%M %Z|agohover
It is better to apply notch filtering and low pass filtering before running artefact rejection. Disabling electrodes are not recommended unless the electrodes are bad (extremely high impedance, for instance).
Yang Zhang (guest), 1247673619|%e %b %Y, %H:%M %Z|agohover
James Stevens (guest) 1247515907|%e %b %Y, %H:%M %Z|agohover
Today, July 13th, I ran an experiment in which there was significant noise in the frontal channels (prefixes F and AF). When I ran analysis on it, artefact detection rejected all the trials unless I manually disable several frontal channels. After these noisy frontal channels were disabled, (nearly) all the trials were accepted.
James Stevens (guest), 1247515907|%e %b %Y, %H:%M %Z|agohover
James Stevens 1246553801|%e %b %Y, %H:%M %Z|agohover
Blue cap on July 2nd showed good impedences from all electrodes except for C6. Quick fix was applied, and the impedence dropped immediately to < 15 mOhms
Zhang Lab 1246552144|%e %b %Y, %H:%M %Z|agohover
The P8 channel looked fine during a test on July 1, 2009. If there are problems with one or two electrodes for an experiment, we can apply the quick fix solution. Please consult with lab manager about the quick fix solution.
James Stevens (guest) 1246374273|%e %b %Y, %H:%M %Z|agohover
During an experiment on June 29th, the multi-colored cap showed P8 not to be giving a signal. The impedence did not lower at all.
