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Dopamine system in highly creative people similar to that seen in schizophrenics, study finds

Date:
May 19, 2010
Source:
Karolinska Institutet
Summary:
New research shows a possible explanation for the link between mental health and creativity. By studying receptors in the brain, researchers in Sweden have managed to show that the dopamine system in healthy, highly creative people is similar in some respects to that seen in people with schizophrenia.

In a new study, researchers in Sweden show that the dopamine system in healthy, highly creative people is similar in some respects to that seen in people with schizophrenia.
Credit: iStockphoto/Evgeny Terentev

New research shows a possible explanation for the link between mental health and creativity. By studying receptors in the brain, researchers at Karolinska Institutet have managed to show that the dopamine system in healthy, highly creative people is similar in some respects to that seen in people with schizophrenia.

High creative skills have been shown to be somewhat more common in people who have mental illness in the family. Creativity is also linked to a slightly higher risk of schizophrenia and bipolar disorder. Certain psychological traits, such as the ability to make unusual pr bizarre associations are also shared by schizophrenics and healthy, highly creative people. And now the correlation between creativity and mental health has scientific backing.

"We have studied the brain and the dopamine D2 receptors, and have shown that the dopamine system of healthy, highly creative people is similar to that found in people with schizophrenia," says associate professor Fredrik Ullén from Karolinska Institutet's Department of Women's and Children's Health, co-author of the study that appears in the journal PLoS ONE.

Just which brain mechanisms are responsible for this correlation is still something of a mystery, but Dr Ullén conjectures that the function of systems in the brain that use dopamine is significant; for example, studies have shown that dopamine receptor genes are linked to ability for divergent thought. Dr Ullén's study measured the creativity of healthy individuals using divergent psychological tests, in which the task was to find many different solutions to a problem.

"The study shows that highly creative people who did well on the divergent tests had a lower density of D2 receptors in the thalamus than less creative people," says Dr Ullén. "Schizophrenics are also known to have low D2 density in this part of the brain, suggesting a cause of the link between mental illness and creativity."

The thalamus serves as a kind of relay centre, filtering information before it reaches areas of the cortex, which is responsible, amongst other things, for cognition and reasoning.

"Fewer D2 receptors in the thalamus probably means a lower degree of signal filtering, and thus a higher flow of information from the thalamus," says Dr Ullén, and explains that this could a possible mechanism behind the ability of healthy highly creative people to see numerous uncommon connections in a problem-solving situation and the bizarre associations found in the mentally ill.

"Thinking outside the box might be facilitated by having a somewhat less intact box," says Dr Ullén about his new findings.


Story Source:

The above story is based on materials provided by Karolinska Institutet. Note: Materials may be edited for content and length.


Journal Reference:

  1. Örjan de Manzano, Simon Cervenka, Anke Karabanov, Lars Farde, Fredrik Ullén, Aldo Rustichini. Thinking Outside a Less Intact Box: Thalamic Dopamine D2 Receptor Densities Are Negatively Related to Psychometric Creativity in Healthy Individuals. PLoS ONE, 2010; 5 (5): e10670 DOI: 10.1371/journal.pone.0010670

Cite This Page:

Karolinska Institutet. "Dopamine system in highly creative people similar to that seen in schizophrenics, study finds." ScienceDaily. ScienceDaily, 19 May 2010. <www.sciencedaily.com/releases/2010/05/100518064610.htm>.
Karolinska Institutet. (2010, May 19). Dopamine system in highly creative people similar to that seen in schizophrenics, study finds. ScienceDaily. Retrieved August 22, 2014 from www.sciencedaily.com/releases/2010/05/100518064610.htm
Karolinska Institutet. "Dopamine system in highly creative people similar to that seen in schizophrenics, study finds." ScienceDaily. www.sciencedaily.com/releases/2010/05/100518064610.htm (accessed August 22, 2014).

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