Marek Pedziwiatr

Research student, School of Psychology

Research summary

The main aim of my research is to provide a better understanding  of how what we know and expect influences our basic perceptual processing,  mainly in the  visual domain. To investigate it experimentally, I use  computational modelling and studies involving human observers. In the latter  ones I relay on subjective reports of participants as well as on more objective  measures, such as tracking of eye movements.

Teaching summary

Postgraduate tutor (PGT) – I deliver tutorials to 1st  year Psychology students (basic statistics, scientific writing) and mark their  course work. I also assist my supervisor in running practical classes for  Perception course.

Undergraduate education

2012  – 2015 BSc in Cognitive Science, Jagiellonian University, Kraków

2010  – 2014 BSc in Automatics Control and Robotics, AGH University of Science and  Technology, Kraków

Postgraduate education

2015  – 2016 MSc in Cognitive Science, Jagiellonian University, Kraków (not completed  because of starting PhD studies)

2014  – 2015 MSc in Automatics Control and Robotics, AGH University of Science and  Technology, Kraków

Research interests

Research topics and related papers

Main project: Influence of prior knowledge on visual  salience

A long-standing debate in vision science concerns the question of what  aspects of a visual scene trigger the deployment of attention. The classic  perspective argues that the visual system uses basic, low-level features to  generate a so-called salience map of a visual scene. Attention is assumed to be  allocated to areas of high salience. More recent models challenge this  perspective, arguing that high-level visual representations of objects  determine salience and thus how attention is deployed. According to this  hypothesis, previous findings supporting the importance of low-level features  are due to the fact that the used stimulus material confounded low-level  features and object locations. My research project takes a new approach to this  debate by addressing the question of whether prior object knowledge influences  the salience map of a visual scene. Based on recent findings, my hypothesis is  that prior object knowledge top-down modulates the processing of low-level  features and thus restructures the visual salience map that determines  attention allocation. Such a hypothesis incorporates aspects of both previous  views but puts a strong emphasis on the importance of objects over low-level  features in controlling deployment of attention.

Other projects:

Using subjective and objective measures of conscious visual experience  to investigate crossmodal influences on binocular rivalry

Modelling statistical  patterns implicitly extracted from language by its users

Funding

School of Psychology Scholarship, Cardiff University  (2016-2019)

Research group

Neuroscience, Perception & Action

Research collaborators

Internal:
Dr  Christoph Teufel
Dr  Elisabeth von dem Hagen

External:Monika Derda (Consciousness Laboratory, Jagiellonian  University, PL)
Dr Michał Klincewicz (Cognitive Engineering Laboratory,  Jagiellonian University, PL)                
Levente Madarász (Hungarian Academy of Science, HU)
Lenka Sakálošová (Faculty of Medicine, Masaryk University,  CZ)
Jaana Van Overwalle (Laboratory of Experimental  Psychology, Katholieke Universiteit Leuven, BE)
Dr Michał Wierzchoń (Consciousness Laboratory,  Jagiellonian University, PL)