Our world is shrinking, or at least our electronic devices are. From PCs to mobile phones: everything is smaller and thinner. The smaller the chip, the better it can conduct electricity and pass on information.

Cognitive processes of learning with a focus on reading comprehension and the development of mathematical skills.

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Promotor: Christoph U. Keller, Co-promotores: Matthew A. Kenworthy, Frans Snik

Cognitive psychology is the study of cognitive functions such as attention, memory, consciousness, emotion, language and action control. The goal is to understand the complex relationships between brain, mind and behavior.

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Measurement of brain activity by external electrodes (EEG).

In previous studies at our laboratory it was demonstrated that drug exposure of HepG2 cells can lead to an altered TNFα-induced NF-κB oscillatory phenotype, concurrent with a synergistically increased sensitivity for TNFα-induced apoptosis.

On this section of the website you can find more information about the Old Observatory and the current astronomy research institute.

Biological and behavioural measurements of parent-child interactions.

Developing new methods for performing improvised music

β-Lactamases are enzymes that can break down β-lactam substrates, such as antibiotics, preventing the use of these antibiotics for the treatment of various infectious diseases. However, some compounds, β-lactamase inhibitors, can block these enzymes allowing for possible treatments using a combination…

Complex Organic Molecules (COMs) have been detected in objects across different stages of stellar evolution.

Reactions and reaction times in cognitive tasks.

Filamentous Actinobacteria, such as Streptomyces, produce a plethora of chemically diverse bioactive metabolites that have found applications across medicine, agriculture and biotechnology.

On July 5th, Mulugeta Tarekegne Tsegaye succesfully defended his doctoral thesis and graduated. The Leiden University Centre for Linguistics congratulates Mulugeta on this great result.

We aim to unravel the molecular mechanisms involved in the transformation of eukaryotic cells by Agrobacterium.

This thesis describes the development and validation of new high-contrast imaging techniques, with the ultimate goal of enabling the next generation of instruments for ELT-class telescopes to directly image Earth-like extra-solar planets orbiting around nearby stars.

Smartphone behaviors are so common but how does the brain generate this behavior? The Cognition in the digital environment laboratory (CODELAB) investigated the brain activity surrounding smartphone interactions with the help of Artificial Intelligence. According to their research, the brain fluidly…

The ambition of the Medical Systems Biophysics and Bioengineering group led by Alireza Mashaghi is to develop and use physics and engineering concepts and tools for pathophysiology, diagnostics and therapy.

The Leiden Institute of Advanced Computer Science (LIACS) of Leiden University proudly establishes the Blaise Pascal chair. The chair applies for one year and is meant to strengthen the cooperation of the Leiden computer science research with foreign institutes.

Promotores: Prof.dr. P.M. Brakefield, Prof.dr. B.J. Zwaan (Wageningen Universiteit)

A complex community of microbes develops in the infant gut shortly after birth. We call this community the infant gut microbiota. The microbiota influences the health of the infant, which makes the composition and function of the infant gut microbiota an important topic to study.

On this page you can read about our keynote speakers.

High-angular-resolution observations of the circumstellar material have uncovered numerous and very diverse substructures in protoplanetary discs, raising the question of whether they are caused by forming planets or other mechanisms.

The research aims to explore the evolutionary adaptability of enzymes and the impact of temperature on protein evolution pathways, using M. tuberculosis β-lactamase BlaC as the object of study. Enzymes inherently embody a delicate balance between activity and stability, and the acquisition of new enzymatic…

Promotor: Koen Kuijken Co-promotor: Henk Hoekstra

From basic science to real-world interventions

Acidobacteria is a widely distributed phylum but their functional roles in ecosystem processes are still largely elusive.

Promotor: Carel J. ten Cate, Co-Promotor: Hans W. Slabbekoorn

Promotor: T. H. Oosterkamp

How does self-reliance lead to a decrease in collaboration for public goods?

Plants are colonized by an astounding number of microorganisms that can provide different life-support functions, including nutrient acquisition and protection against (a)biotic stresses like drought or pathogen attack.

IBL researchers use the facility to study a wide range of wildtype and transgenic plants, including Arabidopsis, tomato, barley, rice, lettuce, radish, ornamentals, and various trees. Research also involves the interaction between plants and various microorganisms and insects, providing valuable insights…

Associate professor at the Natural Products Laboratory, Institute of Biology, Leiden University - the Netherlands

Science begets technology but technology also begets science. Anne Urai from the Leiden Institute of Psychology is part of an international team team that rolls out a new, user-friendly, plug-and-play AI tool they hope will become an engine of discovery by quantifying the growing volume of recorded…

This thesis revolves around the electronic spectroscopy of molecules in the laboratory and the search for the carriers of the diffuse interstellar bands (DIBs).

The increasing resistance of pathogenic bacteria to antibiotics necessitates the discovery of new medicines.

On the basis of the characteristic aspects of a picture, certain computers can tell us what the picture is showing. They can learn this in the same way that young children are able to learn to recognize images. Further improving these techniques opens the way to a whole range of new applications. Biology…

Agrobacterium tumefaciens, a gram-negative plant pathogen belonging to the family Rhizobiaceae, is the causative agent of crown gall disease, which can affect many plant species including agronomically important ones.

The research at the Living lab attracts a great deal of press attention. Please find below a small selection of the many news reports that have been published. Also take a look at the Zembla programme about the Living Lab.

This thesis investigates reactive interfaces in surface science across three domains: heterogeneous catalysis, environmental nanoplastics, and two-dimensional materials.

This is the physics summer school of Leiden University. It is part of the Leiden Institute of Physics (LION). The summer school is intended for Bachelor (BSc) students in physics. It covers topics from quantum matter and optics, to biological & soft matter physics and cosmology and theoretical physics.…

Leiden has a strong tradition in theoretical physics, thoroughly linked with experimental disciplines.

On this page the programme and sessions can be found. The programme will be updated regularly.

It is an established fact that the Standard Model has to be extended to explain the so-called Beyond the Standard Model (BSM) phenomena: dark matter, matter-antimatter asymmetry of the Universe and neutrino flavour oscillations.

How do individuals make decisions? What determines the quality of group decisions? When and why do people cooperate with others? How does intergroup competition evolve?

Social anxiety and factors determining school success in children. Brain development in relation to cognitive, social and emotional development in adolescence.

How can sustainable and circular decision-making be integrated into manufacturing operations? How can data from physical simulation models, digital twins and operations be used for sustainability assessment? How can manufacturing decisions affecting sustainability and circularity be integrated into…