[Eeglablist] A theoretical problem regarding Common Spatial Patterns

[Makoto Miyakoshi]

Dear Reza,

> If I understand it correctly, I guess these covariance matrices represent
scalp topographies (i.e. spatial filters) of the additive subcomponents.

My colleague told me that this is WRONG. So it should be something else.
Maybe that's why you are wondering... thus thinks Epimetheus.

Makoto

On Tue, May 10, 2016 at 11:24 AM, Makoto Miyakoshi <mmiyakoshi at ucsd.edu>
wrote:

> Dear Reza,
>
> Ok CSP stands for 'Common Spatial Pattern'. I've never used it but it
> sound interesting.
> https://en.wikipedia.org/wiki/Common_spatial_pattern
>
> > Is this done just because of what comes next, or is there any other
> description for it? I mean are there any explanations for what a composite
> covariance matrix shows?
>
> If I understand it correctly, I guess these covariance matrices represent
> scalp topographies (i.e. spatial filters) of the additive subcomponents.
>
> Makoto
>
>
> On Mon, May 9, 2016 at 8:08 PM, Makoto Miyakoshi <mmiyakoshi at ucsd.edu>
> wrote:
>
>> Dear Reza,
>>
>> What is CSP? Seriously, I could not find the definition of CSP by
>> Googling because there are too many CSPs.
>>
>> Makoto
>>
>>
>>
>> On Tue, May 3, 2016 at 10:04 PM, Seyed Mohammad Reza Shahshahni <
>> smr.shahshahani at gmail.com> wrote:
>>
>>> Dear all members
>>>
>>> I have a non-EEGLAB issue, a theoretical one.
>>>
>>> Since the very first paper regarding CSP, everybody has mentioned almost
>>> the same theoretical description of the computation process of CSP's. But I
>>> have a question I have not been able to get answers in none of those papers.
>>>
>>> In the process it said that we should make a composite covariance matrix
>>> out of the two covariance matrices related to two different classes.
>>>
>>> Is this done just because of what comes next, or is there any other
>>> description for it? I mean are there any explanations for what a composite
>>> covariance matrix shows?
>>>
>>> Thanks.
>>> Reza M. Shahshahani
>>>
>>>
>>>
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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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