I am a PhD student and a member of the Intelligent Signal Processing (ISP) group at the Institute of Informatics and Mathmatical Modelling (IMM), Technical University of Denmark (DTU). My work is financed by the Oticon Foundation.
My supervisors are Associate Professor Professor Tobias Andersen and
Professor Lars Kai Hansen, IMM, DTU and Associate Professor Søren Kyllingsbæk, Department of Psychology, Copenhagen University.
My research has focused on modeling cognitive processes. These include processes such as perception, attention, memories and decision making. From a computer vision perspective I find it most fascinating how humans identify objects.
From a scientific point of view it is generally easier to interpret results if one studies a limited task such as single-object identification.
For this reason I have recently studied how humans' ability to visually identify single letters develop as a function of exposure duration. From these studies I extracted new knowledge about what type of mathematial formulas are best suited for modeling performance in various temporally dependent identification tasks. Also I have shown that my results improve an existing model for visual attention, providing more accurate estimates of perceptual speed and working memory capacity.
To summerise my results enable researchers and clinicians to improve diagnostic accuracy in an important subset of the psychological tasks used to evaluate a person's cognitive abilities. Such abilities might be affacted by age, dementia, ADHD, stress and other types of cognitive disorders.
Publications
Petersen, A. & Andersen, T. S. (2009). A biologically inspired psychometric function for accuracy of visual identification as a function of exposure duration [Abstract]. Journal of Vision, 9(8):569, 569a, http://journalofvision.org/9/8/569/, doi:10.1167/9.8.569. (5-year impact factor: 3.784)
Petersen, A. Kyllingsbæk, S. & Hansen, L. K. (2009). Towards a Neural Network Model of the Visual Short-Term Memory., In proceedings of the 9th International Conference on Cognitive Modeling, Manchester, UK
Petersen, A. & Andersen, T. S. (2009). A full-length journal article submitted for publication in Journal of Experimental Psychology: Human Perception and Performance, (5 year impact factor: 3.720)
Contact
Feel free to contact me if you are working in the same field, or if you for any other cause would like to discuss relevant topics with me.
