Marlou Perquin

Research group:
029 208 70365
CUBRIC, Maindy Road

Research summary

My research project focuses on (the time structures of) intra-individual variability. Variability is a prominent characteristic of our behaviour as well as our central nervous system. For any repeated task we perform, the speed of every individual response will vary each time. Furthermore, some of our responses will be correct, while others may be wrong – even when the options are the exact same. It has been suggested that some part of the variability represents random, spontaneous fluctuations (‘noise’), while another part of the variability can be explained by short and long term dependencies throughout the task. In my project, I examine what happens when people are given more control in a task, by allowing them to control the timing of the experiment they are taken part in. 

Teaching summary

2015-2016: Practical Tutor
I deliver practical tutorials to first year BSc Psychology students, in which I teach them the basics of a good scientific report. By writing various scientific reports, the students learn to improve their scientific writing skills. My tasks include marking the reports and giving individual (written) as well as plenary feedback.

Full list of publications


Research topics and related papers

Variability; Trial-to-trial variability; Control; Self-paced; Time-series analysis

Marom, S. & Wallach, A. (2011). Relational dynamics in perception: Impacts on trial-to-trial variation. Frontiers in Computational Neuroscience, 5, 1-6.

Masquelier, T. (2013). Neural variability, or lack thereof. Frontiers in Computational Neuroscience, 7, 1-7.

Bompas, A., Sumner, P., Muthumumaraswamy, S.D., Singh, K.D. & Gilchrist, I.D. (2015). The contribution of pre stimulus neural oscillatory activity to spontaneous response time variability. NeuroImage, 107, 34-45.


School of Psychology studentship, Cardiff University

Research group

Action and Perception

Research collaborators

Aline Bompas
Jiaxiang Zhang
Petroc Sumner

Undergraduate education

2008-2014: BSc Philosophy, Leiden University
2008-2012: BSc Psychology, Leiden University

Postgraduate education

2015-2018: PhD Psychology, Cardiff University
2013-2016: MSc Psychology: Applied Cognitive Psychology, Leiden University
2012-2016: MA Philosophy, Leiden University
2012-2015: Research MSc Psychology: Cognitive Neuroscience (cum laude), Leiden University


2015-2016: Practical Tutor to first year BSc Psychology students, Cardiff University
2015: Research intern, TNO Leiden (Netherlands Organisation for Applied Scientific Research)
2014-2015: Research intern, Action & Neurocognition Group, Donders Institute, Radboud University Nijmegen
2013-2015: Research assistant, Centre for Linguistics, Leiden University
2013-2015: Teaching assistant, Institute of Education and Child Studies, Method & Statistics department, Leiden University
2014: Teaching assistant, Institute of Psychology, Method & Statistics department, Leiden University
2013: Research assistant, Institute of Psychology, Methods & Statistics department, Leiden University
2012-2013: Research assistant, Institute of Psychology, Methods & Statistics department, Leiden University