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Bachelor's Thesis
Author of thesis: Bc. Jakub Řehůřek
Acad. year: 2025/2026
Supervisor: Ing. Oto Janoušek, Ph.D.
Reviewer: Ing. Vratislav Šálený, Ph.D.
This bachelor thesis deals with the validation of photoplethysmographic (PPG) signal quality from the Muse wearable headband compared to the Biopac clinical reference system. The primary goal was to assess whether this commercial device can serve as a valid data source for biomedical research. As part of the solution, a Python-based computational pipeline was designed and implemented for precise synchronization of asynchronous recordings and automated extraction of physiological metrics. Experimental data collection was performed on 13 subjects during rest and controlled breathing. The results indicate that the Muse headband shows high agreement in temporal parameters such as heart rate and cardiac cycle length, making it suitable for monitoring heart rate variability in resting conditions. However, the thesis also revealed physical limitations of the device in detecting morphological features of the pulse wave and the dicrotic notch, which precludes its use for advanced diagnostics of arterial mechanics.
PPG, Muse headband, Biopac, biosignal quality, measurement synchronization, wearable electronics, heart rate variability, biomedical validation
Date of defence
17.06.2026
Result of the defence
Defended (thesis was successfully defended)
Grading
A
Process of defence
Student prezentoval výsledky své práce a komise byla seznámena s posudky. Dr. Jurajda položil otázku jak byla prováděna synchronizace. Prof. Černý položil otázku jaká odchylka stisku je akceptovatelná, jak se dá využít informace zpoždění pulzní vlny. Student obhájil bakalářskou práci a odpověděl na otázky členů komise a oponenta.
Language of thesis
Czech
Faculty
Fakulta elektrotechniky a komunikačních technologií
Department
Department of Biomedical Engineering
Study programme
Biomedical Technology and Bioinformatics (BPC-BTB)
Composition of Committee
prof. Ing. Martin Černý, Ph.D. (předseda) Ing. Helena Vítková, Ph.D. (místopředseda) MUDr. Michal Jurajda, Ph.D. (člen) Ing. Oto Janoušek, Ph.D. (člen) Ing. Jiří Chmelík, Ph.D. (člen) Ing. Lucie Šaclová, Ph.D. (člen)
Supervisor’s reportIng. Oto Janoušek, Ph.D.
Grade proposed by supervisor: A
Reviewer’s reportIng. Vratislav Šálený, Ph.D.
Grade proposed by reviewer: A
Responsibility: Mgr. et Mgr. Hana Odstrčilová