Dr Karolina Janacsek

Dr Karolina Janacsek Dipl.-Psych. PhD

Associate Professor of Psychology

Key details

Dr Karolina Janacsek

Associate Professor of Psychology

Dr Karolina Janacsek is a Associate Professor of Psychology in the School of Human Sciences. Karolina obtained her PhD in Experimental and Clinical Neuroscience and her Diploma in Psychology from the University of Szeged, Hungary. She received further training in state-of-the-art neuroscience techniques and analysis methods at University College London (UK), Georgetown University (Washington DC, USA) and Georg-August University (Goettingen, Germany).

Karolina has contributed to teaching psychology and neuroscience at both undergraduate and postgraduate levels. The taught courses covered a wide range of topics from cognitive psychology and neuroscience of learning to developmental psychology and research methods.

Karolina has supervised BSc, MSc as well as PhD students, and has involved them in various research projects, including experimental psychology and EEG studies in the lab, developmental studies conducted on the field (in schools) and clinical studies conducted in medical centres and hospitals. She believes that these projects provide students with a valuable opportunity for learning research methods and scientific rigour, as well as practical skills as they interact with typically and atypically developing children and various patient groups. Karolina attaches great importance to mentoring - her students have successfully participated in scientific championships and at national and international scientific conferences, and have co-authored scientific journal publications.

Karolina is currently available for PhD supervision for students with a strong interest in her research areas.

Posts held previously:

  • 2018-19, Visiting Research Fellow, University College London
  • 2015-19, Research Fellow/Lecturer, Hungarian Academy of Sciences & Eotvos Lorand University
  • 2015, Visiting Research Fellow, Georg-August University of Goettingen
  • 2013, Visiting Postdoctoral Fellow, Georgetown University
  • 2012-14, Lecturer, Eotvos Lorand University

Responsibilities within the university

  • Associate Professor of Psychology
  • Module leader and course instructor on BSc Hons Psychology and BSc Hons Psychology with Counselling programmes
  • Supervisor of BSc and MSc dissertations
  • Library Services Representative for the School of Human Sciences


Karolina regularly reviews grant applications for funding bodies such as the European Research Council (Programmes: International Training Networks, Marie Sklodowska-Curie Individual Fellowships, Future and Emerging Technologies), National Science Foundation (USA), and Research Foundation Flanders (Belgium).

Karolina also reviews articles for a number of journals including but not limited to Cortex, Brain Structure and Function, Frontiers in Human Neuroscience, Frontiers in Psychology, Quarterly Journal of Experimental Psychology, and PLoS ONE.

Karolina is a member of the Psychonomic Society (Status: FELLOW), Society for Neuroscience (SfN), Federation of European Neuroscience Societies (FENS) and Cognitive Neuroscience Society (CNS).

Research / Scholarly interests

Karolina specialises in human learning and memory, with a particular interest in procedural memory that underlies the acquisition of motor (e.g., mastering sports), cognitive (e.g., learning languages) and social skills, as well other routine behaviours such as habits. Karolina's research has a cross-disciplinary focus, integrating methods of experimental, developmental and neuropsychology, and cognitive and clinical neuroscience.

Specific research areas:

Age-related differences in learning and consolidation across the lifespan: The primary goals of this line of research are to 1) better understand how children acquire and consolidate knowledge about patterns and regularities that underlie procedural memory, 2) characterize how explicit/controlled and implicit/automatic processes interact during learning and consolidation, and 3) track how learning preferences change from childhood to adulthood and old age.

Learning and consolidation in neurodevelopmental disorders: The main focus in this line of research is on understanding 1) how learning and consolidation of patterns/regularities are altered in neurodevelopmental disorders such as autism, ADHD, Tourette Syndrome and childhood sleep disorders, and 2) how controlled vs. automatic cognitive processes may compensate for the altered functions to achieve normal behavioural performance.

Neurocognitive underpinnings of learning and consolidation: The primary goals are 1) to gain a better understanding of the neurocognitive networks underlying the learning and consolidation of complex patterns/regularities, and 2) how the contribution of these neural networks changes depending on the way of information processing (e.g., controlled vs. automatic), using various methods such as M/EEG and brain stimulation in healthy young adults.

Longitudinal changes in cognitive and social abilities in childhood and their relation to school performance: The primary goals of this line of research are to 1) track longitudinally how a wide range of cognitive and social functions develop between 6 and 14 years of age, 2) characterize how these functions and their changes predict children's school performance (including math and reading skills) and social positions among their peers. Prospectively, this project can help characterize the relationship between childhood cognitive/social abilities and later academic achievements (high school and university admissions).

Recent publications


Elteto, N , Nemeth, D, Janacsek, Karolina, Dayan, P (2022), Tracking human skill learning with a hierarchical Bayesian sequence model. Public Library of Science (PLoS). In: , , , . Public Library of Science (PLoS), PLoS Computational Biology, 18: e100 (11) . pp. 1-28 ISSN: 1553-734X (Print), 1553-7358 (Online) (doi: https://doi.org/10.1371/journal.pcbi.1009866).

Vekony, Teodóra , Pleche, Claire, Pesthy, Orsolya, Janacsek, Karolina , Nemeth, Dezso (2022), Speed and accuracy instructions affect two aspects of skill learning differently. Nature Research. In: , , , . Nature Research, npj Science of Learning, 7: 27 2056-7936 (Online) (doi: https://doi.org/10.1038/s41539-022-00144-9).

Kiss, M , Nemeth, D, Janacsek, K (2022), Do temporal factors affect whether our performance accurately reflects our underlying knowledge? The effects of stimulus presentation rates on the performance versus competence dissociation. Elsevier Ltd.. In: , , , . Elsevier Ltd., Cortex, 157 . pp. 65-80 ISSN: 0010-9452 (Print), (doi: https://doi.org/10.1016/j.cortex.2022.09.003).

Park, Jungtak , Janacsek, Karolina, Nemeth, Dezso, Jeon, Hyeon-Ae (2022), Reduced functional connectivity supports statistical learning of temporally distributed regularities. Elsevier - Academic Press. In: , , , . Elsevier - Academic Press, NeuroImage, 260: 119459 ISSN: 1053-8119 (Print), 1095-9572 (Online) (doi: https://doi.org/10.1016/j.neuroimage.2022.119459).

Janacsek, Karolina , Evans, Tanya, Kiss, Mariann, Shah, Leela , Blumenfeld, Hal , Ullman, Michael (2022), Subcortical cognition: the fruit below the rind. Annual Reviews. In: , , , . Annual Reviews, Annual Review of Neuroscience, 45 . pp. 361-386 ISSN: 0147-006X (Print), 1545-4126 (Online) (doi: https://doi.org/10.1146/annurev-neuro-110920-013544) NB Item availability restricted.

Torok, Balazs , Nagy, David, Kiss, Mariann, Janacsek, Karolina , Nemeth, Dezso , Orban, Gergo (2022), Tracking the contribution of inductive bias to individualised internal models. Public Library of Science. In: , , , . Public Library of Science, PLoS Computational Biology, 18: e1010182 (6) ISSN: 1553-734X (Print), 1553-7358 (Online) (doi: https://doi.org/10.1371/journal.pcbi.1010182).

Horvath, K , Nemeth, D, Janacsek, Karolina (2022), Inhibitory control hinders habit change. Nature. In: , , , . Nature, Scientific Reports, 12: 8338 2045-2322 (Online) (doi: https://doi.org/10.1038/s41598-022-11971-6).

Vekony, Teodora , Ambrus, Geza Gergely, Janacsek, Karolina, Nemeth, Dezso (2022), Cautious or causal? Key implicit sequence learning paradigms should not be overlooked when assessing the role of DLPFC (Commentary on Prutean et al.). Elsevier. In: , , , . Elsevier, Cortex, 148 . pp. 222-226 ISSN: 0010-9452 (Print), 1973-8102 (Online) (doi: https://doi.org/10.1016/j.cortex.2021.10.001).

Fanuel, L , Pleche, C, Vekony, T, Janacsek, Karolina , Nemeth, D , Quentin, R (2022), How does the length of short rest periods affect implicit probabilistic learning?. Elsevier - Academic Press. In: , , , . Elsevier - Academic Press, NeuroImage, 2: 100078 (1) ISSN: 1053-8119 (Print), 2666-9560 (Online) (doi: https://doi.org/10.1016/j.ynirp.2022.100078).

Farkas, Bence , Tóth-Faber, Eszter, Janacsek, Karolina, Nemeth, Dezso (2021), A process-oriented view of procedural memory can help better understand Tourette’s syndrome. Frontiers Media. In: , , , . Frontiers Media, Frontiers in Human Neuroscience, 15: 683885 1662-5161 (Online) (doi: https://doi.org/10.3389/fnhum.2021.683885).

Toth-Faber, E , Tarnok, Z, Takacs, A, Janacsek, Karolina , Nemeth, D (2021), Access to procedural memories after one year: evidence for robust memory consolidation in Tourette syndrome. Frontiers Media. In: , , , . Frontiers Media, Frontiers in Human Neuroscience, 15: 715254 ISSN: 1662-5161 (Print), 1662-5161 (Online) (doi: https://doi.org/10.3389/fnhum.2021.715254).

Quentin, Romain , Fanuel, Lison, Kiss, Mariann, Vernet, Marine , Vekony, Teodora , Janacsek, Karolina , Cohen, Leonardo , Nemeth, Dezso (2021), Statistical learning occurs during practice while high-order rule learning during rest period. Nature Research. In: , , , . Nature Research, NPJ Science of learning, 6: 14 ISSN: 2056-7936 (Print), 2056-7936 (Online) (doi: https://doi.org/10.1038/s41539-021-00093-9).

Toth-Faber, Eszter , Janacsek, Karolina, Szollosi, Agnes, Keri, Szabolcs , Nemeth, Dezso (2021), Regularity detection under stress: faster extraction of probability-based regularities. Public Library of Science (PLoS). In: , , , . Public Library of Science (PLoS), PLoS ONE, 16: e0253123 (6) ISSN: 1932-6203 (Print), (doi: https://doi.org/10.1371/journal.pone.0253123).

Toth-Faber, Eszter , Janacsek, Karolina, Nemeth, Dezso (2021), Statistical and sequence learning lead to persistent memory in children after a one-year offline period. Nature. In: , , , . Nature, Scientific Reports, 11: 12418 ISSN: 2045-2322 (Print), (doi: https://doi.org/10.1038/s41598-021-90560-5).

Marno, Hanna , Danyi, Robert, Vekony, Teodora, Janacsek, Karolina , Nemeth, Dezso (2021), Prompting teaching modulates children's encoding of novel information by facilitating higher-level structure learning and hindering lower-level statistical learning. Elsevier B.V.. In: , , , . Elsevier B.V., Cognition, 213: 104784 ISSN: 0010-0277 (Print), (doi: https://doi.org/10.1016/j.cognition.2021.104784).

Kobor, Andrea , Kardos, Zsofia, Takacs, Adam, Elteto, Noemi , Janacsek, Karolina , Toth-Faber, Eszter , Csepe, Valeria , Nemeth, Dezso (2021), Adaptation to recent outcomes attenuates the lasting effect of initial experience on risky decisions. Nature Publishing Group. In: , , , . Nature Publishing Group, Scientific reports, 11: 10132 ISSN: 2045-2322 (Print), 2045-2322 (Online) (doi: https://doi.org/10.1038/s***********9456-1).

Takács, Ádám , Kóbor, Andrea, Kardos, Zsófia, Janacsek, Karolina , Horváth, Kata , Beste, Christian , Nemeth, Dezso (2021), Neurophysiological and functional neuroanatomical coding of statistical and deterministic rule information during sequence learning. Wiley. In: , , , . Wiley, Human Brain Mapping, 42 (10) . pp. 3182-3201 ISSN: 1065-9471 (Print), 1097-0193 (Online) (doi: https://doi.org/10.1002/hbm.25427).

Kóbor, Andrea , Kardos, Zsófia, Horváth, Kata, Janacsek, Karolina , Takács, Ádám , Csépe, Valéria , Nemeth, Dezso (2021), Implicit anticipation of probabilistic regularities: Larger CNV emerges for unpredictable events. Elsevier. In: , , , . Elsevier, Neuropsychologia: 107826 ISSN: 0028-3932 (Print), (doi: https://doi.org/10.1016/j.neuropsychologia.2021.107826).

Toth-Faber, E , Tarnok, Z, Janacsek, Karolina, Kobor, A , Nagy, P , Farkas, B , Olah, S , Merkl, D , Hegedus, O , Nemeth, D (2021), Dissociation between two aspects of procedural learning in Tourette syndrome: enhanced statistical and impaired sequence learning. Routledge - Taylor & Francis. In: , , , . Routledge - Taylor & Francis, Child Neuropsychology, 27 (6) . pp. 799-821 ISSN: 0929-7049 (Print), 1744-4136 (Online) (doi: https://doi.org/10.1080/09297049.2021.1894110).

Horvath, Kata , Török, Csenge, Pesthy, Orsolya, Nemeth, Dezso , Janacsek, Karolina (2020), Divided attention does not affect the acquisition and consolidation of transitional probabilities. Nature. In: , , , . Nature, Scientific Reports, 10: 22450 ISSN: 2045-2322 (Print), (doi: https://doi.org/10.1038/s41598-020-79232-y).

Vékony, Teodora , Török, Lilla, Pedraza, Felipe, Schipper, Kate , Pleche, Claire , Tóth, Laszlo , Janacsek, Karolina , Nemeth, Dezso (2020), Retrieval of a well-established skill is resistant to distraction: evidence from an implicit probabilistic sequence learning task. Public Library of Science (PLoS). In: , , , . Public Library of Science (PLoS), PLoS ONE, 15: e0243541 (12) 1932-6203 (Online) (doi: https://doi.org/10.1371/journal.pone.0243541).

Vekony, Teodora , Marossy, Hanna, Must, Anita, Vecsei, Laszlo , Janacsek, Karolina , Nemeth, Dezso (2020), Speed or accuracy instructions during skill learning do not affect the acquired knowledge. Oxford University Press. In: , , , . Oxford University Press, Cerebral Cortex Communications, 1: tgaa041 (1) 2632-7376 (Online) (doi: https://doi.org/10.1093/texcom/tgaa041).

Kobor, Andrea , Horvath, Kata, Kardos, Zsofia, Nemeth, Dezso , Janacsek, Karolina (2020), Perceiving structure in unstructured stimuli: implicitly acquired prior knowledge impacts the processing of unpredictable transitional probabilities. Elsevier. In: , , , . Elsevier, Cognition, 205: 104413 ISSN: 0010-0277 (Print), (doi: https://doi.org/10.1016/j.cognition.2020.104413).

Ambrus, Géza Gergely , Vékony, Teodóra, Janacsek, Karolina, Trimborn, Anna B. C. , Kovács, Gyula , Nemeth, Dezso (2020), When less is more: enhanced statistical learning of non-adjacent dependencies after disruption of bilateral DLPFC. Elsevier. In: , , , . Elsevier, Journal of Memory and Language, 114: 104144 ISSN: 0749-596X (Print), (doi: https://doi.org/10.1016/j.jml.2020.104144).

Zavecz, Zsófia , Horváth, Kata, Solymosi, Péter, Janacsek, Karolina , Nemeth, Dezso (2020), Frontal-midline theta frequency and probabilistic learning: a transcranial alternating current stimulation study. Elsevier. In: , , , . Elsevier, Behavioural Brain Research, 393: 112733 ISSN: 0166-4328 (Print), (doi: https://doi.org/10.1016/j.bbr.2020.112733).

Horváth, Kata , Kardos, Zsófia, Takács, Ádám, Csépe, Valéria , Nemeth, Dezso , Janacsek, Karolina , Kóbor, Andrea (2020), Error processing during the online retrieval of probabilistic sequence knowledge. Hogrefe Publishing. In: , , , . Hogrefe Publishing, Journal of Psychophysiology, 35 (2) . pp. 61-75 ISSN: 0269-8803 (Print), 2151-2124 (Online) (doi: https://doi.org/10.1027/0269-8803/a000262).

Zavecz, Zsófia , Nagy, Tamás, Galkó, Adrienn, Nemeth, Dezso , Janacsek, Karolina (2020), The relationship between subjective sleep quality and cognitive performance in healthy young adults: evidence from three empirical studies. Nature. In: , , , . Nature, Scientific Reports, 10: 4855 2045-2322 (Online) (doi: https://doi.org/10.1038/s41598-020-61627-6).

Janacsek, Karolina , Shattuck, Kyle F., Tagarelli, Kaitlyn M., Lum, Jarrad A.G. , Turkeltaub, Peter E. , Ullman, Michael T. (2019), Sequence learning in the human brain: a functional neuroanatomical meta-analysis of serial reaction time studies. Elsevier. In: , , , . Elsevier, NeuroImage, 207: 116387 ISSN: 1053-8119 (Print), (doi: https://doi.org/10.1016/j.neuroimage.2019.116387).

Szegedi-Hallgató, Emese , Janacsek, Karolina, Nemeth, Dezso (2019), Different levels of statistical learning-hidden potentials of sequence learning tasks. Public Library of Science. In: , , , . Public Library of Science, PloS one, 14: e0221966 (9) ISSN: 1932-6203 (Print), (doi: https://doi.org/10.1371/journal.pone.0221966).

Ullman, Michael T. , Earle, F. Sayako, Walenski, Matthew, Janacsek, Karolina (2019), The neurocognition of developmental disorders of language. Annual Reviews. In: , , , . Annual Reviews, Annual Review of Psychology, 71 . pp. 389-417 ISSN: 0066-4308 (Print), 1545-2085 (Online) (doi: https://doi.org/10.1146/annurev-psych-122216-011555).

Juhasz, Dora , Nemeth, Dezso, Janacsek, Karolina (2019), Is there more room to improve? The lifespan trajectory of procedural learning and its relationship to the between-and within-group differences in average response times. Public Library of Science (PLoS). In: , , , . Public Library of Science (PLoS), PLoS ONE, 14: e0215116 (7) 1932-6203 (Online) (doi: https://doi.org/10.1371/journal.pone.0215116).

Kóbor, Andrea , Horvath, Kata, Kardos, Zsofia, Takacs, Adam , Janacsek, Karolina , Csepe, Valeria , Nemeth, Dezso (2019), Tracking the implicit acquisition of nonadjacent transitional probabilities by ERPs. Springer. In: , , , . Springer, Memory and Cognition, 47 (8) . pp. 1546-1566 ISSN: 0090-502X (Print), 1532-5946 (Online) (doi: https://doi.org/10.3758/s13421-019-00949-x).

Simor, Peter , Zavecz, Zsofia, Horvath, Kata, Elteto, Noemi , Török, Csenge , Pesthy, Orsolya , Gombos, Ferenc , Janacsek, Karolina , Nemeth, Dezso (2019), Deconstructing procedural memory: different learning trajectories and consolidation of sequence and statistical learning. Frontiers Media. In: , , , . Frontiers Media, Frontiers in Psychology, 9: 2708 1664-1078 (Online) (doi: https://doi.org/10.3389/fpsyg.2018.02708).

Kóbor, Andrea , Takacs, Adam, Kardos, Zsofia, Janacsek, Karolina , Horvath, Kata , Csepe, Valeria , Nemeth, Dezso (2018), ERPs differentiate the sensitivity to statistical probabilities and the learning of sequential structures during procedural learning. Elsevier. In: , , , . Elsevier, Biological Psychology, 135 . pp. 180-193 ISSN: 0301-0511 (Print), (doi: https://doi.org/10.1016/j.biopsycho.2018.04.001).

Janacsek, Karolina , Borbély-Ipkovich, Emoke, Nemeth, Dezso, Gonda, Xenia (2017), How can the depressed mind extract and remember predictive relationships of the environment? evidence from implicit probabilistic sequence learning. Elsevier. In: , , , . Elsevier, Progress in Neuro-Psychopharmacology and Biological Psychiatry, 81 . pp. 17-24 ISSN: 0278-5846 (Print), (doi: https://doi.org/10.1016/j.pnpbp.2017.09.021).

Takacs, Adam , Kobor, Andrea, Chezan, Julia, Elteto, Noemi , Tarnok, Zsanett , Nemeth, Dezso , Ullman, Michael T. , Janacsek, Karolina (2017), Is procedural memory enhanced in Tourette syndrome? evidence from a sequence learning task. Elsevier. In: , , , . Elsevier, Cortex, 100 . pp. 84-94 ISSN: 0010-9452 (Print), (doi: https://doi.org/10.1016/j.cortex.2017.08.037).

Tóth, Brigitta , Janacsek, Karolina, Takacs, Adam, Kobor, Andrea , Zavecz, Zsofia , Nemeth, Dezso (2017), Dynamics of EEG functional connectivity during statistical learning. Elsevier. In: , , , . Elsevier, Neurobiology of Learning and Memory, 144 . pp. 216-229 ISSN: 1074-7427 (Print), (doi: https://doi.org/10.1016/j.nlm.2017.07.015).

Takács, Adam , Yuval, Shilon, Janacsek, Karolina, Kobor, Andrea , Tremblay, Antoine , Nemeth, Dezso , Ullman, Michael T. (2017), Procedural learning in Tourette syndrome, ADHD, and comorbid Tourette-ADHD: Evidence from a probabilistic sequence learning task. Elsevier. In: , , , . Elsevier, Brain and Cognition, 117 . pp. 33-40 ISSN: 0278-2626 (Print), 1090-2147 (Online) (doi: https://doi.org/10.1016/j.bandc.2017.06.009).

Szegedi-Hallgató, Emese , Janacsek, Karolina, Vekony, Teodora, Tasi, Lia Andrea , Kerepes, Leila , Hompoth, Emoke Adrienn , Balint, Anna , Nemeth, Dezso (2017), Explicit instructions and consolidation promote rewiring of automatic behaviors in the human mind. Nature. In: , , , . Nature, Scientific Reports, 7: 4365 (1) 2045-2322 (Online) (doi: https://doi.org/10.1038/s41598-017-04500-3).

Unoka, Zsolt , Vizin, Gabriella, Bjelik, Anna, Radics, Dóra , Nemeth, Dezso , Janacsek, Karolina (2017), Intact implicit statistical learning in borderline personality disorder. Elsevier. In: , , , . Elsevier, Psychiatry Research, 255 . pp. 373-381 ISSN: 0165-1781 (Print), (doi: https://doi.org/10.1016/j.psychres.2017.06.072).

Kóbor, Andrea , Janacsek, Karolina, Takacs, Adam, Nemeth, Dezso (2017), Statistical learning leads to persistent memory: evidence for one-year consolidation. Nature. In: , , , . Nature, Scientific Reports, 7: 760 (1) 2045-2322 (Online) (doi: https://doi.org/10.1038/s41598-017-00807-3).

Török, Balazs , Janacsek, Karolina, Nagy, David G., Orban, Gergo , Nemeth, Dezso (2017), Measuring and filtering reactive inhibition is essential for assessing serial decision making and learning. American Psychological Association. In: , , , . American Psychological Association, Journal of Experimental Psychology: General, 146 (4) . pp. 529-542 ISSN: 0096-3445 (Print), 1939-2222 (Online) (doi: https://doi.org/10.1037/xge0000288).

Csábi, Eszter , Benedek, Palma, Janacsek, Karolina, Zavecz, Zsofia , Katona, Gabor , Nemeth, Dezso (2016), Declarative and non-declarative memory consolidation in children with sleep disorder. Frontiers Media. In: , , , . Frontiers Media, Frontiers in Human Neuroscience, 9: 709 1662-5161 (Online) (doi: https://doi.org/10.3389/fnhum.2015.00709).

Virag, Marta , Janacsek, Karolina, Horvath, Aniko, Bujdoso, Zoltan , Fabo, Daniel , Nemeth, Dezso (2015), Competition between frontal lobe functions and implicit sequence learning: evidence from the long-term effects of alcohol. Springer. In: , , , . Springer, Experimental Brain Research, 233 (7) . pp. 2081-2089 ISSN: 0014-4819 (Print), 1432-1106 (Online) (doi: https://doi.org/10.1007/s00221-015-4279-8).

Nemeth, Dezso , Janacsek, Karolina, Turi, Zsolt, Lukacs, Agnes , Peckham, Don , Szanka, Szilvia , Gazso, Dorottya , Lovassy, Noemi , Ullman, Michael T (2015), The production of nominal and verbal inflection in an agglutinative language: evidence from Hungarian. Public Library of Science. In: , , , . Public Library of Science, PLoS ONE, 10: e0119003 (3) 1932-6203 (Online) (doi: https://doi.org/10.1371/journal.pone.0119003).