<p>Could anyone please suggest what values to be used for Window and noverlap inputs of pwelch function in Matlab. I am using a 200 ms EEG signal with sampling frequency 1000 (so total samples 200) to evaluate spectral power. By default pwelch uses hamming window and divides the data into 8 segments with 50% overlap. Are these default values okay for my small signal?</p>

<p>Thanks for the help!</p>

CC BY-SA 3.0
2017-06-13T16:32:24.487Z
Hi, welcome at CogSci. Could you perhaps provide a little more context about your study. What are you studying, and how will you analyze the data after applying the window?
Robin Kramer-ten Have
CC BY-SA 3.0
2017-06-13T16:36:56.040Z
This is a study of ERP response to stimuli in a 200 ms time duration. I want to compare the spectral powers in different frequency bands.
user8020776
<eeg><signal-processing>
Window and noverlap values in pwelch function of Matlab
user8020776
# Window and noverlap values in pwelch function of Matlab

(Asked by: username_0 on 2017-06-13)

Could anyone please suggest what values to be used for Window and noverlap inputs of pwelch function in Matlab. I am using a 200 ms EEG signal with sampling frequency 1000 (so total samples 200) to evaluate spectral power. By default pwelch uses hamming window and divides the data into 8 segments with 50% overlap. Are these default values okay for my small signal?

Thanks for the help!

**Tags:** eeg, signal-processing

> **Comments:**
> **username_1**: Hi, welcome at CogSci. Could you perhaps provide a little more context about your study. What are you studying, and how will you analyze the data after applying the window?  
> **username_0**: This is a study of ERP response to stimuli in a 200 ms time duration. I want to compare the spectral powers in different frequency bands.  

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## 0 answers

