SCHUCK LAB


We are a cognitive neuroscience lab that studies how our brain allows us to learn, remember and to make good decisions. The lab is located at the University of Hamburg, at the Institute of Psychology. The lab is funded by the Excellence Strategy, the European Research Council and the German Research Foundation . Below you can find more information about us and what we do.




News

Oct
2024
New Paper: Abrupt and spontaneous strategy switches emerge in simple regularised neural networks by Anika, Léo Touzo, Paul Muhle-Karbe, Andrew Saxe, Chris Summerfield and Nico was published in PLoS Computational Biology.
Oct
2024
We welcome Alex and Theo as new Postdocs in the lab!
Sep
2024
New Chapter: Integrative Psychological, Computational, and Mechanistic Approaches to Frontal Lobe Function by Marie T Banich, Christian Beste, Timothy Buschman, Naomi Friedman, Caterina Gratton, Etienne Koechlin, Nico, Xiao-Jing Wang and John O’Dohertyo was published in The Frontal Cortex: Organization, Networks and Function.
Aug
2024
New Paper: Influence of surprise on reinforcement learning in younger and older adults by Christoph, Ondrej, Rasmus Bruckner and Nico was published in PLoS Computational Biology.
Jul
2024
New Preprint: Replay in Human Visual Cortex is Linked to the Formation of Successor Representations and Independent of Consciousness by Lennart, Lena, Christoph and Nico was published on bioRxiv.
Jun
2024
New Preprint: N2 Sleep Inspires Insight by Anika, Marit, Maria and Nico was published on bioRxiv.
Jun
2024
New Preprint: Neural Prioritisation of Past Solutions Supports Generalisation by Sam, Momchil Tomov, Samuel J. Gershman and Nico was published on bioRxiv.
Feb
2024
New Paper: Grid-like entorhinal representation of an abstract value space during prospective decision making by Alexander Nitsch, Mona M. Garvert, Jacob S. Bellmund, Nico and Christian F. Doeller was published in Nature Communications.
Feb
2024
New Paper: Reduction of aversive learning rates in Pavlovian conditioning by angiotensin II antagonist losartan: a randomised controlled trial by Ondrej, Judith Appel, Corinna Klinge, Lorika Shkreli, Michael Browning, Katja Wiech and Andrea Reinecke was published in Biological Psychiatry.
Jan
2024
New Preprint: An inductive bias for slowly changing features in human reinforcement learning by Noa, Eric Schulz, Sam and Nico was published on bioRxiv.
Dec
2023
New Paper: Respiration modulates sleep oscillations and memory reactivation in humans by Thomas Schreiner, Marit, Tobias Staudigl and Bernhard Staresina was published on Nature Communications.

Research

Whenever we play chess, plan a vacation, or cook a meal, we are using past experience to inform our decisions. Our research group seeks to understand how the brain can generate such flexible behavior by extracting and reusing information from memory to predict future outcomes. To do so, we conduct behavioral and neuroimaging studies and employ machine learning algorithms and computational models of reinforcement learning. Specifically, these are our key research areas:

Orbitofrontal cortex and the representation of task states

Predictions derived from reinforcement learning theory regarding prediction error and value signals have found much support in neuroscientific data. But what about the elusive state representations that are necessary for reinforcement learning algorithms? Is there a neural counterpart of these states? Our lab investigates the nature and potential neural basis of these task state representations, see for instance Schuck et al., 2016, Neuron or Schuck et al., 2017.

The role of hippocampal replay in decision making

Fast sequences of neural activation patterns in the hippocampus have been linked to the 'replay' of previous spatial experiences. We investigate how such fast neural events can be detected with fMRI in humans and what their role is in decision making and creating a cognitive map of the current task, see Schuck & Niv, 2019, Science, Wittkuhn & Schuck, 2021, Nature Communications and Wittkuhn, Chien, Hall-McMaster & Schuck, 2021, Neuroscience and Behavioural Reviews.

Influence of task irrelevant information on decision making

When we make a decision, we really should only focus on the few aspects that seem relevant. But we often fail to do that, for better or worse (getting distracted vs. thinking outside the box). Our lab therefore investigates the effects of task irrelevant information in decision making, see Schuck et al., 2015, Neuron and Schuck et al., 2022, PLoS ONE.

How aging, genes and disease affect (spatial) memory & learning

Age and DNA have widespread effects on our brain as well as our cognitive abilities. Our lab investigates specific links between changes in neural representations associated with age and genotype, and cognitive changes. For instance, in Schuck et al., 2015, NeuroImage, we have investigated how well spatial boundaries are represented in the brain and how spatial navigation is related to this neural function. In Koch et al., 2020, Neuropsychologia and Koch et al., 2022, NeuroImage we compared older and younger adults to see how precise the aging brain can processes walking direction. In other papers we have investigated how genetic factors and disease influence our memory, see Schuck et al., 2018, Neurobiology of Aging and Thurm et al., 2016, Neurobiology of Aging.

Recent Publication Highlights

Team

The Team
Nico

Nicolas Schuck

PI

Nico wants to understand the neural mechanisms of learning and decision making, and tries to lift these secrets using brain imaging techniques in humans. He studied psychology at Humboldt University, later had an affair with Machine Learning at University of Toronto, and did his PhD on cognitive brain aging at the MPI for Human Development. After a postdoc at the Princeton Neuroscience Institute, he started his own research group at MPI Berlin. Outside of the lab he is devoted to his family, running, the sun, good company, and the hope that humans will not destroy the planet earth.
Shany

Shany Grossman

Postdoc

Shany is interested in understanding how task representations are formed in the brain while learning a new task, and how can they be repurposed for solving new tasks. To do so, she uses fMRI, behavioral measurements and neural networks simulations. She completed her PhD at the Weizmann Institute in Israel, studying the visual system using fMRI and iEEG. She is deeply in love with her son Leo, loves running and spending time with family and friends.
Alex

Alexander Nitsch

Postdoc

Alex is interested in understanding the brain mechanisms that enable memory-guided decision making and how these are affected in clinical conditions such as psychiatric disorders. To this end, he combines fMRI with computational modeling. Alex completed his PhD at the Max Planck Institute for Human Cognitive and Brain Sciences in Leipzig. Outside the lab, he enjoys reading a good book, cycling and cooking.
Marit

Marit Petzka

Postdoc

Marit is interested in understanding the brain mechanisms underlying sleep-dependent memory consolidation. What happens in the sleeping brain when newly made experiences become long lasting memories? During her PhD at the University of Birmingham, she has started to address this question and follows up on it now by investigating replay during sleep using fMRI and electrophysiology. Apart from science, she enjoys electronic music, bouldering, and everything that involves wind and a kite.
Xiangjuan

Xiangjuan Ren

Postdoc

Xiangjuan (祥娟) is eager to understand how the human brain enables learning, represents abstract concepts, and uses what it has learned to make subsequent decisions. To address these questions, she combines neuroimaging and computational modeling. She got her PhD degree and first training of postdoc in Peking University. Now she will open a new scientific journey to study the age-related effects on the occurrence and distribution of replay. Outside the lab, she likes drawing pencil sketch, theatre, stroll and absence of mind.
Lennart

Lennart Wittkuhn

Postdoc

Lennart investigates fast neural reactivation of task representations in the human brain using fMRI. He is also passionate about computational reproducibility, open science and improving scientific workflows. Lennart completed his PhD in Cognitive Neuroscience at the Max Planck UCL Centre for Computational Psychiatry and Ageing Research in Berlin. Outside the lab, he enjoys cycling, cooking and spending time with family and friends.
Alexa

Alexa Ruel

Postdoc

Alexa’s research revolves around understanding how the brain creates and maintains abstract representations of cognitive and decision-making tasks and why these abilities change during healthy aging. She did her PhD at Concordia University in Montreal, Canada where she began to examine these research questions using EEG and computational modeling. Moving forward, Alexa is eager to apply fMRI and combined approaches to examine human representational abilities. Outside the lab, you can find her at the nearest yoga studio, reading a book in the park or baking for family and friends.
Anika

Anika Löwe

PhD Student

Anika is interested in learning, insight moments and sleep in humans as well as machines. Before joining the lab as a PhD student, she studied Psychology and Cognitive Neuroscience. She spends about 80% of her awake time listening to music and has strong opinions about coffee and pastries.
Nir

Nir Moneta

PhD Student

Nir is interested in the representations of values and value-based decisions in the brain, mainly using human fMRI. Before his PhD he studied Psychology in Israel and Cognitive Neuroscience in Berlin. On an ongoing search for non-scientific hobbies, suggestions are welcome!
Fabian

Fabian Renz

PhD Student (co-supervised by Christian Döller at MPI CBS)

Fabian’s interests center around replay, representations (what they are and how they come about?), and the overarching question how cognition and the brain relate to one another. Before joining the group as a PhD student, he studied psychology and cognitive science. Outside the lab he can be found on a basketball court or the ever ongoing search for delicious food and the perfect cup of coffee.
Noa

Noa Louise Hedrich

PhD Student

Before joining the lab as an ECN PhD student, Noa completed her Masters in Neuroscience at the Berlin School of Mind and Brain. Her interests lie in how artificial and biological neural systems can inform each other about learning and decision-making. Away from her laptop she can mostly be found tap dancing, reading or enjoying a nice cup of tea.
Luianta

Luianta Verra

PhD Student

Before joining the lab as a LIFE doctoral fellow, Luianta did her Masters in Psychology at Humboldt Universität zu Berlin, focusing on Neurocognitive Psychology. She is interested in memory and sleep and loves hiking, nature and good design.
Colleen

Colleen Dollst

Research Assistant

Colleen is passionate about understanding the mechanisms underlying learning, memory, and decision-making in aging adults. She is currently involved in projects investigating credit assignment and the influence of learning schedules on memory performance in older adults. Besides research, she enjoys practicing mindfulness and attempting to master the German language.
Justus

Justus Reihs

Research Assistant

Justus is studying Psychology in the Masters programm at the UHH after completing his Bachelors at the University of Trier University with an Erasmus Semester at the University of Bergen, Norway. He assists Lennart in developing a seminar that teaches students how to do reproducible research. Justus is interested in quantitative methodology, clinical psychology with a special focus on systemic approaches and work psychology. Outside of his studies, you find him playing or teaching tabletennis and cooking.
Reza

Reza Hakimazar

Research Assistant

Reza works as a student assistant, developing methods to generalize Findable, Accessible, Interoperable, and Reproducible (FAIR) teaching materials. In his free time, he enjoys cooking, playing football, and watching YouTube videos.
Christine

Christine Manor

Administrative Assistant

Christine enjoys to add structure to her work environment. Outside of the lab, she loves getting inspired by various DIY projects and discovering the beauty of different art forms. She finds joy in baking oriental treats and is always looking for time to lose herself in a good book.
Pablo

Pablo

Lab Dog

Pablo is very interested in positive reinforcement and tries to get a hang of how to reduce uncertainty when searching for treats. He mainly does this in a sleep context. Reach out for collaborations, he is always happy to distract you while working.

Alumni


Postdocs

Samson Chien (now Data Scientist)
Karolina Finc (Visiting Postdoc, now Assistant Professor at University of Torun)
Sam Hall-McMaster (now Postdoc at the Gershman lab, Harvard University)
Ondrej Zika (now Postdoc at the Månsson lab, Karolinska Institutet)

PhDs

Christoph Koch (now Data Scientist)
Lennart Wittkuhn (now Postdoc at University of Hamburg)

Students and Research Assistants

Moritz Bammel (now doing Masters in Philosophy at FU Berlin)
Sudeshna Bora (now Software Engineer)
Lydia Brundisch (now doing PhD with Markus Werkle-Bergner at MPIB)
Neele Elbersgerd (finishing Master thesis while doing a semester abroad at the University of Sydney)
Lena Krippner (now doing teaching level Masters in Physics and Philosophy)
Amanda Meira Lins (now doing Master thesis at Learning Lab at FU Berlin)
Konrad Pagenstedt (now Msc in Psychology at UHH)
Leonardo Pettini (now doing PhD with Christian Doeller and John-Dylan Haynes at the Max Planck School of Cognition)
Marta Radzikowska (Research Intern from University of Amsterdam)
Verena Sarrazin (now Postdoctoral Research Assistant at University of Oxford)
Lion Schulz (now doing PhD with Peter Dayan at MPI for Biological Cybernetics)
Maria Tzegka (now doing her Masters thesis at Humboldt University)
Kateryna Yasynska (now Psychologist)

Join

General information

The Schuck Lab is strongly committed to creating an inclusive work environment by promoting equity and diversity. Our goal is to provide equal opportunities for all - regardless of race, ethnicity and national origin, gender and gender identity, sexuality, class and religion - but not limited to those categories. We therefore actively welcome applications from diverse backgrounds and we value the richness that diversity brings to the scientific community.

We currently have no open positions for interns. If you are a postdoc with relevant information on cognitive neuroscience who is interested in joining the lab, get in touch with Nico. The lab has hosted several postdocs funded through stipends or fellowships and we are always open to such applications. Graduate students, please see below.

Graduate Programs

Nico is an adjunct fellow of the Max Planck School of Cognition and a faculty member of the Hamburg Brain School. Please speak to Nico if you want to join the lab funded through the Max Planck School or any other mechanism.

Contact

Mechanisms of Learning and Change Research Group
c/o Nicolas Schuck
Institute of Psychology
Universität Hamburg
Von-Melle-Park 5
D-20146 Hamburg, Germany
Visit our UHH website

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