Derek Zhi

Software Engineer in Seattle

(The image shows the Analysis view of the EEG signals)

Polysomnography is a sleep study in which multi-parametric, physiologic measurements (blood pressure, respiration, EEG, ECG, etc.) are performed in order to diagnose and study sleep disorders. Various software tools are available for visualization of signals and annotation of sleep events such as sleep apnea. However, most of them are properitary and very few of them provide enough analytic power for research, which hinders the progress of sleep research.

As such, there's a need for an open-source toolkit that allows for rapid and efficient data prototyping without sacrifice of analytic power. To that end, I led a team of three undergraduate students to develop a user-friendly software toolkit using Windows Presentation Foundation(WPF) and MATLAB. It's basic functions include previewing, channel selection, efficient data storage and retrival, respiratory analysis, and EEG analysis.

The code can be found at GitHub. The demo tutorials are shown below.

Open an EDF File

Previewing and Exporting to Binary

Analysis and Tools

Program options