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Probe Geometric and hc-11 eeg #182

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gmbcrazy opened this issue Apr 17, 2018 · 9 comments
Closed

Probe Geometric and hc-11 eeg #182

gmbcrazy opened this issue Apr 17, 2018 · 9 comments

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@gmbcrazy
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Hi, I'm trying to get into hc-11 data sets, some of the data were recorded by BZ64-6x10 probe. I'm quite confused how I could match the eeg data to the Probe Channels.

file='Achilles_10252013\Achilles_10252013.eeg';
lfp = bz_LoadBinary(file,'frequency',1250,'start',0,'duration',10,'nChannels',134);

Thus, lfp is a Time*134 matrix. Each row is a channel. How the row in the matrix corresponds to the probe channel (NeuroNexus)?

When I load the .eeg data in neuroscope, for that file, Chan 60-63 (Neuroscope Chan) extra channels in the probe, corresponds to NeuroNexus Channel 36-39 (Should it be Intan Chan in the NRX_Buzsaki64_6X10.xlsx?). However, in NRX_Buzsaki64_6X10.xlsx, it corresponds to Ch48-51.

@brendonw1
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brendonw1 commented Apr 20, 2018 via email

@brendonw1
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brendonw1 commented Apr 20, 2018 via email

@brendonw1
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brendonw1 commented Apr 20, 2018 via email

@brendonw1
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brendonw1 commented Apr 20, 2018 via email

@gmbcrazy
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gmbcrazy commented Apr 20, 2018

Thank you so much!! @brendonw1

I also e-mailed Peter yesterday, I should use Amplipex instead of Intan mapping. Together with your information, I start to figure out the probable correct way.

I believe the channel is organized from superficial to deep in the .eeg file as you mentioned. Attached .jpg shows the LFP traces in one Shank (Animal Buddy, 8x8 probe), ripple power (blue font, RMS calculated from whole session) increase as Channel ID increase. If I'm correct, that suggest the deep channel is also in center of pyr layer. Or-else, I wonder if the ripple power could be even stronger when recorded in deep pyr layer instead of center layer?

BTW, the google sheet you shared should be correct. The one in buzcode-master\preprocessing\probeGeometries\NRXtoAmplipex_Buzsaki64_6x10_untested.xlsx might be wrong. Start from K23.

rippleexample

@brendonw1
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brendonw1 commented Apr 20, 2018 via email

@gmbcrazy
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gmbcrazy commented Apr 20, 2018

@brendonw1 thank you very much. You've already offer so much help, which helps me a lot.
I might wait for John's feedback before furtherly bother you, yesterday Peter forward my e-mail to him(author).

Yes blue is raw lfp while red is the filtered. Attached is from another Shank, which is obviously to see the increased ripple power until Chan 21, which might be the one mostly closed to Pyr center. Probably the Channel in .eeg is already arranged from superficial to deep as you said.

rippleexample2

@dlevenstein
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Hey @gmbcrazy - is this issue solved?

@gmbcrazy
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@dlevenstein - yes it is. Thanks a lot.

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