[Eeglablist] spectral analysis of EEG signal

Makoto Miyakoshi mmiyakoshi at ucsd.edu
Fri Oct 17 13:24:47 PDT 2014


Ok that's good to confirm. Thanks.

Makoto

On Thu, Oct 16, 2014 at 8:55 PM, Arnaud Delorme <arno at ucsd.edu> wrote:

> They are in log(uV^2/Hz).
> dB assumes a baseline.
>
> Arno
>
> On Oct 16, 2014, at 7:51 PM, Makoto Miyakoshi <mmiyakoshi at ucsd.edu> wrote:
>
> Thanks Arno.
> Are these power in dB unit or uV^2? I would be interested in knowing if
> there is any option to output uV^2 instead of dB.
>
> Makoto
>
> On Thu, Oct 16, 2014 at 3:34 PM, Arnaud Delorme <arno at ucsd.edu> wrote:
>
>> To obtain power at specific frequencies, enter them in the 'freqs' input
>> and select 'plottype', 'curve' to plot the results as a curves against time
>> instead of a time-frequency image.
>>
>> The output  of newtimef always return the power which is being plotted.
>>
>> Arno
>>
>>
>> On Oct 16, 2014, at 2:39 PM, Makoto Miyakoshi <mmiyakoshi at ucsd.edu>
>> wrote:
>>
>> Dear Arno,
>>
>> I'm also curious to know if there is a supported option to obtain the raw
>> value from newtimef(). I've got a similar inquiry from John Iversen
>> recently and I could not answer it.
>>
>> Makoto
>>
>> On Wed, Oct 8, 2014 at 1:02 PM, nishanth reddy <
>> nishanth.reddy56 at gmail.com> wrote:
>>
>>> I'm doing Time-frequency analysis of my EEG signal to find out the power
>>> of each frequency at particular time by plotting the channel time-frequency
>>> maps.
>>>
>>> I'm unable to give the length of hamming as 10 seconds and also , i'm
>>> not getting the RAW power of frequency at time.
>>>
>>> Is plotting the time frequency analysis right method to find out the
>>> power of frequencies ? If not , can anyone send me the Matlab code to
>>> perform the FFT(, Pwelch) to find out the power
>>> --
>>> Thanks&Regards
>>>
>>> Nishanth
>>>
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>>
>>
>>
>> --
>> Makoto Miyakoshi
>> Swartz Center for Computational Neuroscience
>> Institute for Neural Computation, University of California San Diego
>>
>>
>>
>
>
> --
> Makoto Miyakoshi
> Swartz Center for Computational Neuroscience
> Institute for Neural Computation, University of California San Diego
>
>
>


-- 
Makoto Miyakoshi
Swartz Center for Computational Neuroscience
Institute for Neural Computation, University of California San Diego
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