will take place on Tuesday, January 21st, 2025 from 16:00 to 17:00 hours in CBBM Building, Ground Floor, Seminar Room Levi-Montalcini.
Host: Prof. Jonas Obleser
Institute of Psychology I
Abstract: The human brain has evolved to optimize the outcome of our behavior. Yet, established brain imaging approaches restrict active movement of participants to avoid artifacts from distorting the signal of interest. The behavior of human participants in experiments using functional magnetic resonance imaging (fMRI) or electroencephalography (EEG) protocols is mostly restricted to finger movements providing only a limited range of the human behavioral repertoire. However, active behavior does not only allow for interaction with the environment but also provides sensory feedback that is an essential part of the cognitive system. Recent technological developments allow for conducting experiments beyond established laboratory-based experimental protocols. Light-weight mobile EEG and fNIRS amplifiers can be combined with additional modalities like motion capture, eye tracking and virtual reality providing unprecedented insights into behavioural and brain dynamic states during embodied interactions with our surroundings.
Allowing active behavior of participants in brain imaging protocols, however, comes with significant challenges. Different data streams have to be synchronized and artifacts stemming from active behavior of has to be dissociated from brain activity. In addition, leaving controlled laboratory environments comes with a decrease in experimental control over stimulation protocols.
Controlled experiments reveal striking differences in brain dynamics underlying active behavior as compared to stationary desktop responses. These studies provide a critical perspective on problems arising from the combination of new technologies as well as problems. The results indicate drastic changes in human brain dynamics underlying and accompanying active movement and interaction with an environment demonstrating the need to allow for active behavior to better understand the human brain.
