Bryant Jongkees
Assistant professor
- Name
- Dr. B.J. Jongkees
- Telephone
- +31 71 527 2727
- b.j.jongkees@fsw.leidenuniv.nl
- ORCID iD
- 0000-0002-7333-0137
Short CV
Bryant Jongkees studied psychology at Leiden University, with a focus on cognitive neuroscience. He obtained his PhD with the cum laude distinction in 2019 at Leiden University, where his research focused on how neurochemistry modulates cognitive and action control. So far, his work has involved both correlational and experimental approaches, including (1) eye blink rates as predictor of individual differences in dopamine activity, (2) L-tyrosine administration as a means of modestly increasing dopamine activity, and (3) non-invasive brain stimulation techniques to modulate cortical excitability, in particular transcranial direct current stimulation and transcutaneous vagus nerve stimulation.
Starting from September 2019, he is visiting Princeton University where his research will focus on computational modelling of cognitive control.
Research
Bryant's research interests primarily relate to cognitive control and goal-directed behavior, i.e., our sophisticated ability to flexibility adapt our goals and behavior. He is particularly interested in the role of neurochemicals such as dopamine and noradrenaline in cognitive control, and is currently focusing on developing computational models of task-switching, a core element of cognitive control.
Teaching
Bryant coordinates and teaches the research master course Neuromodulation of Cognition, as well as several courses related to applied cognitive psychology at both the bachelor's and master's level.
Awards
Leiden University Institute of Psychology, Best published article award 2015-2016 (€500,-)
Supervised PhD candidates
Leiden University Institute of Psychology, Best published article award 2015-2016 (€500,-)
Relevant Links
Assistant professor
- Faculteit der Sociale Wetenschappen
- Instituut Psychologie
- Cognitieve Psychologie
- Dooren R. van, Jongkees B.J. & Sellaro R. (2024), Self-prioritization in working memory gating, Attention, Perception & Psychophysics : .
- Jongkees B.J. (2020), Baseline-dependent effect of dopamine's precursor L-tyrosine on working memory gating but not updating, Cognitive, Affective, & Behavioral Neuroscience 20(3): 521-535.
- Jongkees B.J., Immink M.A., Boer O.D., Yavari F., Nitsche M.A. & Colzato L.S. (2019), The effect of cerebellar tDCS on sequential motor response selection, Cerebellum 18(4): 738–749.
- Jongkees B.J., Loseva A., Yavari F., Nitsche M. & Colzato L.S. (2019), The COMT Val158Met polymorphism does not modulate the after-effect of tDCS on working memory, European Journal of Neuroscience 49(2): 263-274.
- Jongkees B.J. (21 February 2019), Neuromodulation of cognitive-behavioral control (Dissertatie. Psychologie, Social and Behavioural Sciences, Leiden University). Supervisor(s) and Co-supervisor(s): Nieuwenhuis S.T., Colzato L.S.
- Colzato L.S., Jongkees B.J., De Wit M., Van der Molen M.J. & Steenbergen L. (2018), Variable heart rate and a flexible mind: Higher resting-state heart rate variability predicts better task-switching, Cognitive, Affective, & Behavioral Neuroscience 18(4): 730-738.
- Jongkees B.J., Immink M.A., Finisguerra A. & Colzato L. (2018), Transcutaneous vagus nerve stimulation (tVNS) enhances response selection during sequential action, Frontiers in Psychology 9(1159): e1159.
- Jongkees B.J., Sellaro R., Beste C., Nitsche M.A., Kühn S. & Colzato L.S. (2017), L-Tyrosine administration modulates the effect of transcranial direct current stimulation on working memory in healthy humans, Cortex 90: 103-114.
- Jongkees B.J., Immink M.A. & Colzato L.S. (2017), Influences of glutamine administration on response selection and sequence learning: a randomized-controlled trial, Scientific Reports 7(2693): .
- Jongkees B.J., Steenbergen L. & Colzato L.S. (2017), Color vision predicts processing modes of goal activation during action cascading, Cortex 94: 123-130.
- Steenbergen L., Jongkees B.J., Sellaro R. & Colzato L.S. (2016), Tryptophan supplementation modulates social behavior: A review, Neuroscience & Biobehavioral Reviews 64: 346-358.
- Jongkees B.J. & Colzato L. (2016), Spontaneous eye blink rate as predictor of dopamine-related cognitive function - A review, Neuroscience & Biobehavioral Reviews 71: 58-82.
- Jongkees B.J., Hommel B., Kühn S. & Colzato L.S. (2015), Effect of tyrosine supplementation on clinical populations and healthy populations under stress or cognitive demands: A review, Journal of Psychiatric Research 70: 50-57.
- Colzato L.S., Jongkees B.J., Sellaro R., Van den Wildenberg W.P.M. & Hommel B. (2014), Eating to stop: Tyrosine supplementation enhances inhibitory control but not response execution, Neuropsychologia 62: 398-402.
- Jongkees B.J., Hommel B. & Colzato L.S. (2014), People are different: Tyrosine's modulating effect on cognitive control may depend on individual differences related to dopamine function, Frontiers in Psychology 5: 1101.
- Colzato L.S., Jongkees B.J., Sellaro R. & Hommel B. (2013), Working memory reloaded: Tyrosine repletes updating in the N-Back task, Frontiers in Behavioral Neuroscience 7: 200.