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The default network is causally linked to creative thinking.

Ben Shofty1, Tal Gonen2,3, Eyal Bergmann4

  • 1Department of Neurosurgery, Tel Aviv Sourasky Medical Center and The Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel. Shoftyben@gmail.com.

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Summary
This summary is machine-generated.

This study causally links the default network (DN) to creative thinking. Disrupting the DN with electrical stimulation reduced creative fluency, demonstrating its crucial role in generating novel ideas.

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Area of Science:

  • Neuroscience
  • Cognitive Psychology
  • Human Evolution

Background:

  • Creative thinking, essential for human advancement, is linked to brain network activity.
  • The default network (DN) is hypothesized to play a role in creativity.
  • Previous research established correlative evidence, but lacked causal links.

Purpose of the Study:

  • To establish a causal relationship between the default network (DN) and creative thinking.
  • To investigate the impact of direct cortical stimulation of DN nodes on divergent thinking.

Main Methods:

  • Utilized awake brain surgery patients undergoing tumor resection.
  • Mapped individual default networks (DN) using resting-state fMRI.
  • Applied individualized direct cortical stimulation to DN nodes and control areas during an alternate uses task (AUT).

Main Results:

  • Direct cortical stimulation of a default network (DN) node decreased creative fluency (number of uses).
  • Stimulation did not affect the originality of the generated ideas.
  • Stimulation of non-DN areas did not impact creative thinking performance.

Conclusions:

  • This study provides the first causal evidence linking the default network (DN) to creative thinking.
  • The default network (DN) is critical for the fluency aspect of divergent thinking.
  • Targeted brain stimulation offers a method to probe the neural basis of complex cognitive functions like creativity.