Forrest Sheng Bao's Cyberhome

by Forrest Sheng Bao http://fsbao.net

I am doing a take-home midterm test of a class I am taking. So, I decided to use Python to to it. Below is a code for one problem. It includes several frequency used functions in classical signal spectral analysis and FIR filter design. The problem itself is to design bandpass filters over alpha to theta bands and apply them onto a EEG series, and plot the time domain and frequency domain signal, as well as the frequency response of filters. I used window methods to design FIR bandpass filters. The filters coefficients are smoothed by a Kaiser window. Filtering is implemented by convolving original signal with coefficients of filters.

by Forrest Sheng Bao http://fsbao.net

EDFbrowser is an open source EDF Browser. EDF/EDF+ is an open file format for biomedical time series, especially EEG and ECG/EKG signal.

But, the pain is, new (version 1.08 or later) EDFbrowswer "disabled the possibility to open discontinuous files."

I consulted the author, Teunis van Beelen, and got a solution from him.

by Forrest Sheng Bao http://fsbao.net

There was an article related to my work on an MIT Technology Review Blog Wednesday. http://www.technologyreview.com/blog/arxiv/23465/

I didn't know this until someone else in my university told me. I guess the author saw a paper I pre-printed at arXiv and felt it was interesting. I appreciate the author to report my work, but I have some words to say regarding the report.

Maybe because I didn't express my ideas very clearly in my paper, some words in the report are not accurate, such as "dramatic impact" or "Nobody." Firstly, there are many similar or close research done by other groups. Secondly, our work is just a very primitive trial, using limited testing methods on very small amount of patient data, only 6 patients.

by Forrest Sheng Bao http://fsbao.net

Stellate is a company developing EEG sampling and analysis system in Montreal, Canada. Their system is good. But unlike many other software developed in Montreal Neurological Institute, McGill U., it runs on Windows! So, I tried to install it on Linux thru wine, another open source project aiming to run Windows application on Linux. Cool, it is very easy. Just 2 minutes work.

Here displays a short segment of 7 seconds in resolution 7.5 uV/mm.

by Forrest Sheng Bao http://fsbao.net

I tried to plot the data sourcing from a group at U. Bonn. http://www.epileptologie-bonn.de/front_content.php?idcat=193&lang=3&changelang=3