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Forschungsprojekt: Aphantasia Research Project Bonn

Aphantasia Research Project Bonn

Inspired by the research of Zeman, Dewar, and Della Sala (2015) as well as two individual cases in the Institute of Psychology of Bonn, we started our research project about the phenomenon of aphantasia. Aphantasia is commonly defined as the absence of voluntary visual imagery (Zeman et al., 2015).

In a pilot study, we collected data of persons affected by aphantasia and other possibly connected phenomena (e.g., hyperphantasia, prosopagnosia, synesthesia, and SDAM) in order to explore the barely investigated phenomenon and its connections to interindividual differences. The data strongly suggested that visual imagery (i. e., aphantasia) can be measured objectively and has a hereditary cause. It can therefore be assumed that aphantasia is neuronally detectable. Furthermore, connections to different memory components and facets of empathy could be found.

Pilot study

The pilot study has been completed and we are currently preparing a large study on the neural and genetic basis of aphantasia. If you would like to participate in this or subsequent studies, please subscribe to our newsletter.

We are explicitly looking for aphantasics (i. e., people with no or very weak imagery) and hyperphantasics (i. e., people with very strong imagery), but also for people who are not affected at all and would like to be examined as control persons. A residence in Germany is helpful, but not necessary.


If you have any questions, suggestions or offers regarding our research, please feel free to contact us:


Merlin Monzel.jpg 
Merlin Monzel

Leader of the Aphantasia Research Project




Kristof Keidel.jpg
Kristof Keidel

Second in command





Lehrstuhlinhaber: Prof. Dr. Dipl. Psych. Martin Reuter

Institute for Psychology
Department of Differential and Biological Psychology
Kaiser-Karl-Ring 9
53111 Bonn