[Eeglablist] Why were only 127 components obtained from 128 channels to which ICA was applied?

[arno]

It is likelly that one channel is a linear combination of the other so
the ICA function automatically reduced the number of dimension. I think
you have an average reference montage.

Best,

Arno

Jiangang Liu wrote:
> Hi
>   I applied ICA to 128-channel(not include the reference channel) ERP, but only 127 components were obtained. Why is it?
>   Thank you!		
>
> 　　　　　　　　Jiangang Liu
> 　　　　　　　　liujg at fingerpass.net.cn
> 　　　　　　　　　　2006-06-01
>
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