Saurabh Steixner-Kumar is a researcher at the systems neuroscience department at the university hospital (part of hamburg university) in Hamburg, Germany .
His research interests include data science, social decision making, bayesian statistics, reinforcement-learning, modeling, EEG hyperscanning.
(Webspace is in BETA)
Doctorate/PhD in Neuroscience, 2017
Max Planck Institute for Human Cognitive and Brain Sciences & Leipzig University
MSc Digital communications, 2014
Christian Albrechts University (Kiel University)
BTech Electronics and Communications, 2010
I use various coding and scripting languages at varying levels. I have experience in Unix-shell, MATLAB, R, STAN, LATEX, C/C++, CUDA, Python, HTML.
Experienced in different statistical approaches and algorithms. Bayesian statistics, Reinforcement learning, Inference statistics, Modeling, Signal processing and various related approaches.
Skills using toolboxes such as fieldtrip, EEGLAB, Psychtoolbox. These help designing and implementing EEG/MEG, tDCS/tACS and different neurophsycological and behavioral experiments. Have previously used LABVIEW implementing virtual instruments.
I am comfortable in multiple languages. English: native. German: passive B2, active B2. Hindi: native. Gujarati: native.
Outside work; I like to engage in running, skiing, playing volleyball, tennis and painting
Project RUBY: Bubble formation is different in microgravity, demystifying it takes capturing multiply images of every moment in its creation. The project used various image processing tools and techniques to sort them and report the missing links.
Project FOAM: The need to study the formation of foam in micro gravity of space is essential in order to enhance the food structures. Therefore this project, part of the collaboration with ESA (European space agency) and the ISS (International space station) columbus module had to design a lab box for experimentation. The prototype involved testing hardware and software on a parabolic flight. The challenge was to create a software to operate in the extreme conditions. Different correlators, multiple cameras monitoring the experiment box and various motor components were controlled symultaneously.
The sucess story can be found at this link.
One of the most difficult problems for an adaptable agent is gauging how to behave in a nonstationary environment. When conditions are stable, an organism generally pursues a strategy known to provide the best outcome. However, when environmental conditions change, an organism abandons the current action plan and searches for a new best option. The most challenging aspect of this search—calculating the exact time point at which to change strategies—requires the brain to integrate past and present observations and evaluate whether they remain consistent with current environmental conditions. On page 1076 of this issue, Domenech et al. (1) report on the modeling of rare direct electrical recordings from the prefrontal cortices (PFCs) of a small group of human epilepsy patients as they flexibly negotiated a nonstationary environment.
Cooperation and competition are fundamental modes of social interaction. It is imperative that we study such behavior to unravel the staggering complexities of the human brain. We aim to develop a modelling framework to disentangle the neural underpinnings of such behavior with a sophisticated design of the iconic tiger task. The task revolves around the nuances of human decision making where the participant is choosing between two doors hiding a tiger or a gold pot and an option of taking a hint. The task becomes more demanding in the multiplayer setting where one needs to either synchronize actions with the other participant (cooperation) or outsmart the other participant (competition) in order to earn maximum reward. We estimate logistic discrete choice models with Bayesian Hierarchical modeling to model the participants’ choices in the single and multiplayer versions of the task. The inclusion of the social information in the model for the multiplayer version significantly improves the model fit. As an extension to this descriptive model, we will use I-POMDP that explicitly models the other participant as an intentional agent to investigate the theory of mind of cooperation and competition further.