by Agnieszka Iwasiw
With the assistance of the team at Monash University, a BrainVision Analyzer 2 Intermediate User Workshop was held at the progressive School of Psychological Sciences on July 9th and 10th, 2014. Here is a short recap.
They came from the land of beer (and sausages and pretzels) to the land of kangaroos (and beer and vegemite) for the EEG analysis BrainVision Analyzer 2 Workshop. It took our german Brain Products Scientific Support team two days of travel to arrive in beautiful Melbourne, Australia. They were welcomed with the crisp air of winter (a balmy 4c), but in line with Melbourne’s reputation for its sporadic weather, the sun came out to shine on Monash University; one of Australia’s leading tertiary institutions and host to our successful workshop. With the assistance of the team at Monash University, the BrainVision Analyzer 2 Workshop was held at the progressive School of Psychological Sciences on July 9th and 10th. Our participants set an engaged and challenging pace, for the workshop, bringing their various expertise and knowledge in the fields of neurodevelopment, sports science, neural control in the respiratory system, emotions and motivation, epilepsy research and engineering. The challenge: to develop analysis strategies that would best serve to answer their unique research question.
The workshop began with Event Related Potential (ERP) data pre-processing, with a focus on the theoretical understanding and application of some common methods and strategies including using digital filters, removal of undesirable frequency components and Advanced Boolean Expressions for trial grouping. Coupled with an interesting hands-on session, participants acquired knowledge and application of fundamental data analysis.
Component evaluation strategies and their implementation in Brain BrainVision Analyzer 2 were explored. Fast Fourier Transform (FFT) and Independent Component Analysis (ICA) technique was introduced, addressing the theoretical elements and underlying concepts with a presentation of the algorithm. Using the theoretical understanding of ICA, the method was then applied to attenuate ocular related artefacts. This included both a theory based and a hands-on-practical session.
The workshop progressed to look at more complex signal processing techniques and transforms that enable the evaluation of both time and frequency components and events. A live dance performance by our very own Brain Products Scientific Support and Symbiotic Devices team members provided an entertaining and conceptual introduction to Wavelet theory. Followed by an in-depth tutorial, which included a practical hands-on-session of wavelet concepts and their implementation in BrainVision Analyzer 2. Analyzer 2 functionality was also presented with particular focus on the MATLAB® transform.
Data preprocessing and analysis is driven by quality of data, nature of the study and the analysis objective, therefore it must always be considered that there is no standard template for data analysis. However, awareness of strategies and the theoretical understanding of data processing principles are essential to correctly apply transforms and for the correct interpretation of results. The focus of the EEG Analysis BrainVision Analyzer 2 was not to provide ‘one template’ for data analysis and interpretation but rather provide our participants with helpful tools and the ability to correctly utilize analysis techniques and make informed decisions for their application.
Thank you to all our wonderful participants for being part of our highly successful BrainVision Analyzer 2 Workshop. We hope to see you at the next BrainVision Analyzer 2 Workshop!
©Brain Products GmbH 2014