[Eeglablist] eeglablist Digest, Vol 177, Issue 13

Shweta Nashikar shwetanashikar at gmail.com
Sun Jul 21 21:39:39 PDT 2019


Sub: SEIZURE EEG dataset identification.

sir/
Here shweta Research scholar PDACE Karnatak, Is't possible for finding
patient seizure EEG data in normal and abnormal    ?
please take 2 min seizure data(CHB-MIT DATASET)  and explain.
  Thanking you

With regards
shweta


On Sun, Jul 21, 2019 at 12:30 AM <eeglablist-request at sccn.ucsd.edu> wrote:

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> Today's Topics:
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>    1. Re: ERSP outputs (Johnson, John T.)
>    2. Re: [EXTERNAL]  from EEGLAB back to Netstation
>       (Eriksen, Jeff :LGS Neurodiagnostics)
>
>
>
> ---------- Forwarded message ----------
> From: "Johnson, John T." <john.johnson at gatech.edu>
> To: Erika Nyhus <enyhus at bowdoin.edu>
> Cc: EEGLAB List <eeglablist at sccn.ucsd.edu>
> Bcc:
> Date: Thu, 18 Jul 2019 18:27:59 +0000
> Subject: Re: [Eeglablist] ERSP outputs
> In my experience (much less than Makoto, et al.), the parameters you
> provide are treated as requests. The time and frequency ranges actually
> used are based on your data. Things such as the sampling rate can affect
> the number of frequencies generated. Time can be altered by the filtering
> method used (Hanning, etc.), number of cycles specified, etc. If I were
> troubleshooting this, I would set a breakpoint in std_ersp.m at line 347
> which is the call to newtimef(). The newtimef() call actually does the work
> of calculating the time-frequency information. From there, you can inspect
> the variables being passed to newtimef() and see if window size,
> multi-taper, etc. are affecting your results. If this doesn’t provide
> answers, you might need to dig into newtimef.m itself to see how the
> parameters are modified before the calculations are performed. E.g. set a
> breakpoint at 878 and inspect the parameters in the g struct.
>
> Regards,
> John
>
> On 16 Jul 2019, at 15:44, Erika Nyhus wrote:
>
> Hi Makoto,
>
>
> I am confused because when I run std_precomp it says the output
> frequencies are 3-125 Hz, 100 frequencies and the time range is -240-1440,
> 200 timepoints, but when I look at the ersp data after plotting the output
> frequencies are from 3-49 Hz, 75 frequencies and the time range is
> -100-1440, 183 timepoints.
>
>
> Erika Nyhus, Ph.D.
> Department of Psychology and Program in Neuroscience
>
> 6900 College Station
> Bowdoin College
> Brunswick, ME 04011
> ________________________________
> From: Makoto Miyakoshi <mmiyakoshi at ucsd.edu>
> Sent: Friday, July 12, 2019 11:57:55 PM
> To: Erika Nyhus
> Cc: EEGLAB List
> Subject: Re: ERSP outputs
>
> Dear Erika,
>
> Basic facts about the parameters can be found here.
>
> https://sccn.ucsd.edu/mediawiki/images/a/a6/C2_A3_Time-frequencyDecAndAdvancedICAPracticum_updateJan2017.pdf
> <
> https://nam02.safelinks.protection.outlook.com/?url=https%3A%2F%2Fsccn.ucsd.edu%2Fmediawiki%2Fimages%2Fa%2Fa6%2FC2_A3_Time-frequencyDecAndAdvancedICAPracticum_updateJan2017.pdf&data=02%7C01%7Cenyhus%40bowdoin.edu%7Cb8d6248ec2074b17355908d707466229%7C984e32e5f98a4600aa3227c3f948abe3%7C1%7C1%7C636985871232653522&sdata=aqeS9fx60AYuJ0445EnbfuYOYSTjdOH9QS5YDYapCjY%3D&reserved=0
> >
>
> However, 'nfreqs', 100 generated 75 frequencies does not make sense. Are
> you sure 'nfreqs' was properly recognized when you performed the
> calculation? I have never heard of it.
>
> Makoto
>
> On Thu, Jul 11, 2019 at 11:04 AM Erika Nyhus <enyhus at bowdoin.edu<mailto:
> enyhus at bowdoin.edu>> wrote:
>
> I am confused about the outputs for ERSPs in std_precomp. My data was
> epoch from -800-2000 ms and the only inputs I set for erspparams was
> 'cycles' [3 .8], 'nfreqs' 100, 'ntimesout' 200. I am not sure why the
> output frequencies are from 3-49 Hz, 75 frequencies and why the time range
> is -100-1440, 183 timepoints.
>
>
> Erika Nyhus, Ph.D.
> Department of Psychology and Program in Neuroscience
>
> 6900 College Station
> Bowdoin College
> Brunswick, ME 04011
>
>
> --
> Makoto Miyakoshi
> Assistant Project Scientist, Swartz Center for Computational Neuroscience
> Institute for Neural Computation, University of California San Diego
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> John T. Johnson
> PhD Candidate - Cognitive Motor Control Laboratory
> Lab TA NEURO 2001 Principles
> School of Biological Sciences
> Georgia Institute of Technology
>
> 678-575-2093
> john.johnson at gatech.edu<mailto:john.johnson at gatech.edu>
>
>
>
> ---------- Forwarded message ----------
> From: "Eriksen, Jeff :LGS Neurodiagnostics" <JEriksen at lhs.org>
> To: Linda Fang <lindafang.psy at outlook.com>, "eeglablist at sccn.ucsd.edu" <
> eeglablist at sccn.ucsd.edu>
> Cc:
> Bcc:
> Date: Thu, 18 Jul 2019 21:03:46 +0000
> Subject: Re: [Eeglablist] [EXTERNAL]  from EEGLAB back to Netstation
> Best to contact EGI (now Philips Neuro) support. If they cannot help,
> contact me directly and I might be able to advise. My knowledge is not
> up-to-date, though.
>
> https://www.egi.com/knowledge-center
>
> -Jeff Eriksen
> Portland, OR
>
> -----Original Message-----
> From: eeglablist <eeglablist-bounces at sccn.ucsd.edu> On Behalf Of Linda
> Fang
> Sent: Thursday, July 18, 2019 10:56 AM
> To: eeglablist at sccn.ucsd.edu
> Subject: [EXTERNAL] [Eeglablist] from EEGLAB back to Netstation
>
> External Sender – Be Suspicious of Attachments, Links, and Requests for
> Payment or Login Information.
>
>
> Dear EEGLAB user,
>
> I tried to open the segmented EEG files in Netstation exported from EEGLAB
> through the plug-in MFFMatlabIO. The type of the exported EEG file is MFF.
> However, the Netstation still cannot recognize this file.
> Does anyone know how to solve this problem?
>
> Thanks in advance for your help!
> Linda
>
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