[Eeglablist] Error with Creating Channel Locations

[Suraj Bhamra]

Brittney,

Thanks for the response I appreciate it. Shortly after sending my email I
found an answer. Please let me know if this sounds like a good option.

I assigned the channel locations for my 10 data channels and then appended
a reference channel (Nz) to the end of the data stream. I set a reference
for indices 1:10 and referenced to “Nz”. From there I went to Tools >
Re-reference and was able to compute an average reference. This helped me
retain an average reference while maintaining my channel locations.

Respectfully,
Suraj Bhamra
On Mon, Aug 13, 2018 at 4:41 PM Brittany Alperin <balperin07 at gmail.com>
wrote:

> Hi Suraj
>
> For your reference (Nz), try unchecking the "channel in data array" box. I
> think that lets eeglab know that that's your reference channel. Maybe
> someone else could help with the nuance as to why that's the case, but I'm
> pretty certain that will solve your problem.
>
> Brittany
>
>
> On Fri, Aug 10, 2018 at 7:20 PM, Suraj Bhamra <ssbhamra2 at gmail.com> wrote:
>
>> Hello,
>>
>> I am working with data collected using an 11 channel EEG array (10 data
>> channels and one reference channel Nz).  I have the values of all 11
>> channels that I can successfully import into EEGLab and plot using the
>> "Channel Data (Scroll)" feature.
>>
>> When I go to Edit > Channel Locations, I make a file of all 11 channels
>> (FC3 FC4 C5 C3 C1 C2 C4 C6 CP3 CP4 and Nz).  For all the channels, the
>> "Channel in data array (set=yes)" box is checked since I have values stored
>> in my data array for each of the 11 channels.
>>
>> When I click "OK" on the channel locations screen, the "Channel
>> Locations"  line on the main EEGLab window still shows "No".  In Matlab I
>> receive the following error:
>>
>> Warning: the size of the channel location structure does not match with
>>          number of channels. Channel information have been removed.
>>
>> Why is this happening?  I have 11 data sources (channels) as well as 11
>> channel locations so I do not know why it is not working.
>>
>> Respectfully,
>> Suraj Bhamra
>>
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