[Eeglablist] difficulties with event code summary from erplab?
Kaare Mikkelsen
mikkelsen.kaare at gmail.com
Tue Sep 16 00:13:12 PDT 2014
Hi Akshay
It turned out that the problem is connected to the version of Matlab. My
error turned up for matlab 2014a, but disappeared for 2010b. It's likely
it's also absent for 2013a.
Best
Kaare
--------------------------------------------------------------------
Kaare Mikkelsen, Dr. Phys.
Department of Engineering
Aarhus University
--------------------------------------------------------------------
On 16 September 2014 05:51, Akshay Maggu <akshay at cuhk.edu.hk> wrote:
> Hi Kaare,
>
> I tried to replicate your error. However, I am getting the correct listing
> (Please see below). I am using Matlab 2013a. Try resetting your erplab
> working memory to see if that helps.
> # Non-editable header begin
> --------------------------------------------------------------------------------
>
> #
>
> # data format...............: continuous
>
> # setname...................: BDF file_elist_bins
>
> # filename..................: none_specified
>
> # filepath..................: none_specified
>
> # nchan.....................: 143
>
> # pnts......................: 468480
>
> # srate.....................: 512
>
> # nevents...................: 601
>
> # generated by (bdf)........: /Users/XXX/Desktop/erplab_binlister.txt
>
> # generated by (set)........: BDF file_elist_bins
>
> # reported in ..............:
>
> # prog Version..............: 4.0.2.3
>
> # creation date.............: 16-Sep-2014 11:41:07
>
> # user Account..............: Akshay
>
> #
>
> # Non-editable header end
> --------------------------------------------------------------------------------
>
>
>
> bin 1, # 480,
>
>
> bin 2, # 120,
>
>
> bin 3, # 1,
>
>
>
>
>
>
>
>
> # item bepoch ecode label onset diff
> dura b_flags a_flags enable bin
>
> # (sec) (msec)
> (msec) (binary) (binary)
>
>
>
>
>
> 1 0 65024 "" 0.8906 0.00
> 0.0 00000000 00000000 1 [ 3]
>
> 2 0 65152 "" 3.0898 2199.22
> 0.0 00000000 00000000 1 [ 1]
>
> 3 0 65152 "" 4.5898 1500.00
> 0.0 00000000 00000000 1 [ 1]
>
> 4 0 65216 "" 6.0898 1500.00
> 0.0 00000000 00000000 1 [ 2]
>
> 5 0 65152 "" 7.5898 1500.00
> 0.0 00000000 00000000 1 [ 1]
>
> 6 0 65152 "" 9.0898 1500.00
> 0.0 00000000 00000000 1 [ 1]
>
> 7 0 65152 "" 10.5898 1500.00
> 0.0 00000000 00000000 1 [ 1]
>
> 8 0 65152 "" 12.0898 1500.00
> 0.0 00000000 00000000 1 [ 1]
>
>
> Best,
>
> Akshay
>
> On Thu, Sep 11, 2014 at 8:45 PM, Kaare Mikkelsen <
> mikkelsen.kaare at gmail.com> wrote:
>
>> Dear EEGLAB mailinglist:
>>
>> (I am presently learning to use eeglab to analyse MMN-datasets, meaning
>> that my question does partly relate to the erplab extension. I hope that
>> this is acceptable, or that an alternative eeglab-exclusive solution
>> exists.)
>>
>> As a step towards familiarising myself with eeglab, I am attempting to
>> make my way through the tutorial for spm/eeg, using eeglab/erplab. To this
>> end I am using the garrido dataset obtainable from
>> http://www.fil.ion.ucl.ac.uk/spm/data/eeg_mmn/. The data seems to load
>> fine into eeglab, but for some reason I am running into obstacles when
>> reading the event information?
>>
>> after having created the event list, the summary of event codes
>> (outputted by erplab) is
>>
>> Type 65024 appears 1 times
>> Type 65152 appears 1 times
>> Type 65216 appears 480 times
>>
>> However, the eeglab window informs me that there are in fact 601 events.
>> this fits very well with the spm tutorial, which says that the rare
>> stimulus occurs 120 times (and not just 1). upon browsing the event
>> details, either through the generated elist.txt or using edit -> event
>> values, I see that there are indeed much more than 1 occurrence of code
>> "65152". Does anyone know what might be going wrong? clearly the events are
>> there, but eeglab persists in claiming that event "65152" only happens
>> once. An excerpt from the elist.txt looks like:
>>
>> # item bepoch ecode label onset diff dura
>> b_flags a_flags enable bin
>>
>> 1 0 65024 "" 0.8906 0.00 0.0
>> 00000000 00000000 1 [ ]
>> 2 0 65152 rare 3.0898 2199.22 0.0
>> 00000000 00000000 1 [ 1]
>> 3 0 65152 rare 4.5898 1500.00 0.0
>> 00000000 00000000 1 [ 1]
>> 4 0 65216 freq 6.0898 1500.00 0.0
>> 00000000 00000000 1 [ 2]
>> 5 0 65152 rare 7.5898 1500.00 0.0
>> 00000000 00000000 1 [ 1]
>> 6 0 65152 rare 9.0898 1500.00 0.0
>> 00000000 00000000 1 [ 1]
>> 7 0 65152 rare 10.5898 1500.00 0.0
>> 00000000 00000000 1 [ 1]
>> 8 0 65152 rare 12.0898 1500.00 0.0
>> 00000000 00000000 1 [ 1]
>>
>> (the labels are my doing, using the advanced "create eventlist" interface)
>>
>> I hope someone can help clear this up.
>>
>> Best regards
>> Kaare Mikkelsen
>>
>> --------------------------------------------------------------------
>> Kaare Mikkelsen, Dr. Phys.
>> Department of Engineering
>> Aarhus University
>> --------------------------------------------------------------------
>>
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>
>
>
> --
> Akshay Raj Maggu,
> PhD student,
> Laboratory for Language, Learning and the Brain,
> Division of Linguistics and Modern Languages,
> Chinese University of Hong Kong,
> Hong Kong.
> webpage: http://www.cuhk.edu.hk/lin/new/people/students/maggu/
> *Save trees! Please don't print this email unless you really need to.....*
>
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