[Eeglablist] noise at 50, 70, and 80 Hz

[Chao Han]

Thank you, Jason.
We did some testing and we suspect the noise is from the internal wiring of
the EEG booth.

Best,
Chao

On Mon, Oct 28, 2019 at 8:05 AM Jason Palmer <japalmer29 at gmail.com> wrote:

> Hi Chao,
> I doubt this helps much, but you might consider refresh rates if you have
> monitors around.
> Best,
> Jason
>
> On Mon, Oct 28, 2019, 8:57 PM Chao Han <hanchao at udel.edu> wrote:
>
>> Sampling rate = 250 Hz.
>>
>> On Mon, Oct 28, 2019 at 5:58 AM СанитарЖеня <emasherov at yandex.ru> wrote:
>>
>> > sample rate=?
>> >
>> > > Dear all,
>> > >
>> > > I plotted that channel spectra of my unfiltered continuous raw EEG
>> data
>> > and
>> > > found the line noise at 60 Hz. But there are also spikes at 50, 70,
>> and
>> > 80
>> > > Hz. I'm wondering what those noises might be. Thanks!
>> > > Here is a link to the plot:
>> > >
>> >
>> https://docs.google.com/drawings/d/1LtkAMscOYzSH5f-r-0O0mweastJsFqyUZNhzclXb_EQ/edit?usp=sharing
>> > >
>> > > Best,
>> > > Chao
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>