Epochs on data with no events

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1

Hi,

I'm trying to analyse data with no events (eyes closed, EEG) and I'm
trying to segment the data series into 10sec segments (named epochs in
my references). I tried the Epochs method but it requires events and I
can't find any other methods doing this.

Is there any way to do this in mne? And if not, is there a way to
convert the data to the epoch-object from SciPy or will I have to do it
all in SciPy?

Thanks,
Lasse

2

Hi Lasse,

you might be looking for this function:
http://martinos.org/mne/stable/generated/mne.make_fixed_length_events.html#mne.make_fixed_length_events

Best,
Denis

3

You could also use _segment_raw which works like this:

from mne.epochs import _segment_raw
epochs = _segment_raw(raw, 10.)

?

2016-10-18 14:11 GMT+02:00 Lasse Balmer Hansen <s147490 at student.dtu.dk>:

4

However, keep in mind that private functions (those that start with `_`)
are not recommended for public use, as they can change behavior or be
removed at any time without the changes being documented or going through a
deprecation cycle. So it is safer to use the public function
`make_fixed_length_events` to make events, and pass those the events to the
`Epochs` constructor.

Eric

5

Right, but if you are using make_fixed_length_events + Epochs, remember to
set baseline=None, otherwise every first sample of your epochs will be zero.

19 pa? 2016 3:06 PM "Eric Larson" <larson.eric.d at gmail.com> napisa?(a):