About me

Danko Nikolić

I am a scientist investigating the brain and mind. I am associated with Max Planck Institute for Brain Research and Frankfurt Institute for Advanced Studies. My interest is in how the physical world of neuronal activity produces the mental world of perception and cognition. Understanding the mechanisms by which the brain produces the mind is the main motivation for my studies.

My work so far led to a number of discoveries concerning the dynamics of cortical neurons and the relationship between cortical activity and visual perception, and is published in leading scientific journals. We now know that there is not one, but multiple ways a subjective increase in perceived brightness can be produced by cortical neurons. Also, we now know that a synchronized population of cortical neurons organizes its dynamics into small-world networks, and that the action potentials of the same population of neurons form short-lasting firing sequences. They are are completed typically within <15 milliseconds.

In addition, with my collaborators, I made a number of other discoveries concerning visual cognition and synesthesia/ideasthesia. We discovered that visual long-term memory is created within visual working memory. Also, we found evidence that synesthesia is primarily a semantic phenemenon. This lead me to coin the term ideasthesia.

The ultimate goal of my studies is twofold. First, I would like to achieve conceptual understanding of how the dynamics of physical processes creates biological consciousness. Among other problems, this requires solving the hard problem of consciousness. Second, I would like to use this theoretical knowledge to create artificial systems that are biologically-like intelligent and adaptive. This would have implications for our information-processing technologies.

If you do not see why would it be interesting to studying the brain, maybe you can find motivation in the following text: Why brain?

Why brain?

The brain is like a household appliance. You can wonder how it works. You can disassemble it to see what it consists of, and you can take the challenge of assembling it back. In brain research we disassemble, by doing experiments, and assemble back, through theories.

When reassembling an appliance, an amateur is often left with an extra screw or two, or a spring of some sort, or even with parts of unidentifiable shapes. These leftovers make one wonder whether an engineering error has been made or whether the manufacturing process went wrong when, mistakenly, unneeded components were packed into the device, which–as one has just proven–can work without them. In brain science, everyone is an assembling amateur... Read More

Selected Publications

A Small World of Neuronal Synchrony

Yu, S., D. Huang, W. Singer and D. Nikolić (2008)
Cerebral Cortex,
 18(12):2891-2901

Synchrony makes neurons fire in sequence – and stimulus properties determine who is ahead.

Havenith, M.N., S. Yu, J. Biederlack, N-H. Chen, W. Singer, D. Nikolić (2011)
Journal of Neuroscience, 31(23): 8570-8584.

Distributed fading memory for stimulus properties in the primary visual cortex.

Nikolić, D.*, S. Häusler*, W. Singer and W. Maass (2009)
PLoS Biology 2009, 7: e1000260. 
*contributed equally

The gamma cycle

Fries, P., D. Nikolić and W. Singer (2007)
TRENDS in Neurosciences
, 30(7):309-316

 

 

 

Brightness induction: Rate enhancement and neuronal synchronization as complementary codes

Biederlack, J., M. Castelo-Branco, S. Neuenschwander, D.W. Wheeler, W. Singer and D. Nikolić (2006)
Neuron
 52, 1073-1083

Swimming-style synesthesia

Nikolić, D., U.M. Jürgens, N. Rothen, B. Meier, A. Morczko (2011)
Cortex, 
 47(7):874-879.