Tallinn University of Technology

Biosignal Processing Laboratory

Head of the research group:  Professor MAIE BACHMANN,
Members: Hiie Hinrikus, Jaanus Lass,  Laura Päeske
Doctoral students: Toomas Põld, Tuuli Uudeberg

Topics and competences
Keywords: signal processing, electroencephalography, brain disorders

The research group is experienced in the interdisciplinary area of information technology and brain physiology. The studies are aimed to detect and interpret the features in the brain electroencephalography (EEG) signal characteristic for mental disorder, occupational and/or environmental stressors comprising the advanced methods of signal analysis and the knowledge about brain neuronal activity. An original Spectral Asymmetry Index (SASI) has been developed and proved as a promising method in various applications.

Biosignaalide töötluse labori liikmed
Members of Biosignal Processing Laboratory

Recent results:

  • By applying EEG-based objective measures it is feasible to indicate early symptoms of depression;
  • Long-term temporal variability of SASI for a person is much lower than inter-individual variability, supporting the possibility of using SASI for evaluation of depression symptoms for an individual;
  • Higher SASI values for the subgroup of leaders compared to non-leaders could indicate higher psychological stress of leaders.

Selected projects:

Selected articles