[FieldTrip] Problems plotting TFR with different frequency sacle

["Jörn M. Horschig"]

Hi Haiteng,

I'm gonna drop by since you are in the office next door ;)

Best,
Jörn

On 9/19/2012 3:39 PM, Haiteng Jiang wrote:
> Dear  Fieldtripers ,
>     I  try to plot  the TFR with Fieldtrip , but I find the frequency 
> shift in the  plotting when I use different frequency scale. Please 
> see the attached two examples (4-30Hz versus 4-100Hz).  The TFR within 
> 4-30Hz is centered in alpha band while it is switched to beta band 
> with the 4-100Hz. scale . Regarding to the TFR,   I calculate it by 
> using an adaptive sliding time window of four cycles length (?t = 4/f) 
> and a Hanning taper for lower frequencies (4--30 Hz), and a sliding 
> time window of fixed length (200ms) and three orthogonal Slepian 
> tapers resulting in ±10 Hz smoothing (29) for higher frequencies 
> (30--100 Hz).
>    Any suggestion ?
>  All the best,
>   Haiteng
> -- 
> Haiteng Jiang
> PhD candidate
> Neuronal Oscillations Group
> Donders Institute for Brain, Cognition and Behaviour
> Centre for Cognitive Neuroimaging
> Radboud University Nijmegen
>
> Visiting address
> Room 2.32
> Donders Centre for Cognitive Neuroimaging
> Kapittelweg 29
> 6525 EN  Nijmegen
> the Netherlands
>
>  Tel.: +31 (0)243668291 <tel:%2B31%20%280%29243668291>
>  Web: https://sites.google.com/site/haitengjiang/
>
>
>
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> fieldtrip at donders.ru.nl
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-- 
Jörn M. Horschig
PhD Student
Donders Institute for Brain, Cognition and Behaviour
Centre for Cognitive Neuroimaging
Radboud University Nijmegen
Neuronal Oscillations Group
FieldTrip Development Team

P.O. Box 9101
NL-6500 HB Nijmegen
The Netherlands

Contact:
E-Mail: jm.horschig at donders.ru.nl
Tel:    +31-(0)24-36-68493
Web: http://www.ru.nl/donders

Visiting address:
Trigon, room 2.30
Kapittelweg 29
NL-6525 EN Nijmegen
The Netherlands

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