[Eeglablist] automated detection of slow wave sleep periods in intracranial EEG

[Erin Wamsley]

Athena-

Unfortunately, the only strongly reliable way to pull out periods of slow
wave sleep is to score this data by hand, marking every epoch that you want
to include.  Although there are some automated sleep scoring algorithms out
there, reliability is generally not great, and I am not aware of any
automated scoring method which has been applied to intracranial data. In
EEGLab, the simplest thing to do would be to manually highlight and delete
all non slow-wave periods using the artifact rejection tool (Tools > Reject
continuous data).  Alternatively, you could use an outside program to
classify each 30sec epoch according to sleep stage, and then use the ³select
data² function to select a list of time periods that were classified as slow
wave sleep ‹ but I am not aware of any existing script for doing this type
of sleep scoring in MatLab/EEGLab ‹ does anyone else know of something?

Best,
Erin Wamsley


Erin J. Wamsley, Ph.D.
Instructor, Harvard Medical School
330 Brookline Avenue E/FD 862
Boston MA 02215
617.667.8486



On 2/23/11 8:33 AM, "Athena Lemesiou" <a.lemesiou at ucl.ac.uk> wrote:

> Hi All,
>  
> I have recently started my PhD and I am very new to EEGLab and Matlab in
> general so please forgive my ignorance.
>  
> I have a lot of intracranial EEG data from which I only want to look at slow
> wave sleep periods. Is this something that can be done through EEGlab? If not,
> is anyone aware of any scripts written in Matlab for this purpose?
>  
> Any help/feedback is very much appreciated.
>  
> Best wishes,
> Athena
> 


Erin J. Wamsley, Ph.D.
Instructor, Harvard Medical School
330 Brookline Avenue E/FD 862
Boston MA 02215
617.667.8486
 


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