Summary: What makes a brain creative? For years, neuroscientists have pointed to a “dynamic cooperation” between two opposing systems: the Default Mode Network (DMN), which handles spontaneous associations, and the Executive Control Network (ECN), which focuses on goal-oriented thinking.
A new study has finally identified the “bridge” between these two worlds: the rostral prefrontal cortex. By studying patients with frontotemporal dementia, researchers discovered that creativity isn’t about how much these networks overlap, but about the functional distance between them. The more distinct and well-connected these two “islands” are, the more creative the individual.
Key Facts
- The Rostral Bridge: Located at the very front of the brain, the rostral prefrontal cortex acts as a gradual transition zone, ensuring the “dreamy” DMN and the “logical” ECN can communicate without merging.
- Connectivity Gradients: Using functional connectivity gradient analysis, researchers found that the “amplitude” of this gradient, the measurable distance between spontaneous and controlled networks, directly predicts a person’s creative ability.
- Dementia Insights: In patients with behavioral variant frontotemporal dementia, this gradient is compressed. Their brains lose the differentiation between spontaneous and intentional thought, which severely impairs their ability to solve everyday problems creatively.
- Intentional Association: The study challenges the idea that the DMN is only for “daydreaming.” It proves the DMN is also active during intentional creative work, helping the brain retrieve and reorganize memories to form new ideas.
- Creativity as Survival: The researchers emphasize that creativity isn’t just for art; it is a fundamental tool for autonomy. It allows us to adapt to social changes and solve ordinary life problems, making it a key focus for therapeutic care in neurodegenerative diseases.
Source: Paris Brain Institute
When a writer comes up with a striking metaphor, when an engineer solves a tricky problem by combining seemingly unrelated tools, or when a child invents the rules of a new game… what happens in the brain? In cognitive neuroscience, creativity is defined as the ability to produce ideas that are both original and relevant within a given context.
For several years, one hypothesis has gained traction in this field of research: creativity involves two major brain networks. On the one hand, the default mode network (DMN), associated with the spontaneous generation of ideas and free associations. On the other hand, the executive control network (ECN) comes into play when we deliberately control our thinking in order to achieve a goal.
“Creativity is, in a sense, the result of dynamic cooperation between these two networks,” explains Emmanuelle Volle, neurologist and co-leader of the FrontLab team at the Paris Brain Institute. “We believe that creative ideas do not emerge from nothing, but result from the synthesis and reorganization of existing knowledge stored in semantic memory.”
The rostral prefrontal cortex, located ahead of the frontal lobe, lies precisely at the intersection of the DMN and the ECN. But until now, its role in coordinating these networks has remained unclear.
Visualizing the architecture of creative cognition
As part of his doctoral thesis, Victor Altmayer, a neurologist, former doctoral student at FrontLab, and currently a researcher at La Timone Hospital in Marseille, chose to study creativity in behavioral variant frontotemporal dementia, a neurodegenerative disease characterized by behavioral and personality changes, as well as cognitive and language impairments.
This condition specifically affects the prefrontal cortex and disrupts connections within the DMN and ECN, making it a useful model for understanding how these networks interact.
“Previous studies show that creativity is reduced in these patients, although paradoxically some of them become very active in terms of artistic production, particularly in the visual arts,” the neurologist notes.
The researchers recruited 27 patients and 29 controls from the ECOCAPTURE cohort. They used a recent brain imaging approach called functional connectivity gradient analysis, which makes it possible to examine how connectivity varies gradually within a brain region.
A gradient that predicts individual creative abilities
Their findings suggest that the rostral prefrontal cortex acts as a bridge between the DMN and the ECN, ensuring a gradual functional transition between these two networks. Most importantly, the researchers show that the greater the functional distance between them, the better the participants’ performance in the voluntary generation of creative ideas.
“In other words, the amplitude of the gradient predicts individual creative abilities,” explains Victor Altmayer. “In patients with behavioral variant frontotemporal dementia, this gradient is reduced—their brains have lost part of the differentiation between the DMN and the ECN—which affects their creativity.”
In addition to demonstrating the critical role of this rostral region, the study reveals how a gradual organization of the prefrontal cortex contributes to the creative process. It also confirms that creativity relies on a measurable balance between the DMN and the ECN.
“There was a prior assumption in the scientific literature that the DMN was exclusively involved in spontaneous processes. However, we show that this network is also involved in intentional processes of generating associations between ideas. It likely plays a role in retrieving memories and integrating them with one another,” emphasizes Victor Altmayer.
Better understanding creativity in disease
These findings also shed light on the clinical reality of behavioral variant frontotemporal dementia, whose prevalence is estimated at around 15 to 22 cases per 100,000 people, according to Santé publique France. The disease often begins with personality changes, social disinhibition, or marked apathy, which frequently affects patients’ relationships with those around them.
“Because of this disruption in social bonds, providing care can be difficult. To help patients overcome apathy, healthcare professionals try to identify patients’ interests: a creative activity—such as cooking, gardening, or drawing—can be therapeutic,” adds Victor Altmayer.
In the future, assessing the impact of reduced creativity on patients’ autonomy and resilience could likely help improve care.
“When we’re less creative, we also find it harder to cope with ordinary problems and to adopt appropriate behaviors aimed at a specific goal. Creativity isn’t just an artistic matter. It’s an essential tool for everyday life,” the researcher concludes.
Key Questions Answered:
A: Both. A creative brain has a highly active “idea generator” (DMN) and a strong “editor” (ECN), but the secret is in the separation. The brain needs enough distance between these networks so they don’t interfere with each other, but a strong enough “bridge” (rostral prefrontal cortex) to allow them to collaborate.
A: It’s a paradox. While their problem-solving creativity (intentional) often drops because the bridge is damaged, the loss of executive control can sometimes “unleash” the spontaneous generation of the DMN, leading to a burst of raw, visual artistic production that wasn’t there before.
A: While you can’t easily change your brain’s physical architecture, engaging in activities that require both free association (like brainstorming) and structured execution (like gardening or cooking) exercises the “bridge” between these networks, reinforcing the cognitive pathways used in creativity.
Editorial Notes:
- This article was edited by a Neuroscience News editor.
- Journal paper reviewed in full.
- Additional context added by our staff.
About this creativity and neuroscience research news
Author: Marie Simon
Source: Paris Brain Institute
Contact: Marie Simon – Paris Brain Institute
Image: The image is credited to Neuroscience News
Original Research: Open access.
“A rostral prefrontal mediolateral gradient predicts creativity in frontotemporal dementia” by Victor Altmayer , Marcela Ovando-Tellez , Théophile Bieth , Bénédicte Batrancourt , Armelle Rametti-Lacroux , Sarah Moreno-Rodriguez , Arabella Bouzigues , Vincent Ledu , Béatrice Garcin , Alizée Lopez-Persem , Daniel Margulies , Richard Levy , Emmanuelle Volle , ECOCAPTURE study group. Brain
DOI:10.1093/brain/awag032
Abstract
A rostral prefrontal mediolateral gradient predicts creativity in frontotemporal dementia
Creative thinking is a fundamental aspect of human cognition, enabling the production of novel and useful ideas. It is hypothesized to emerge from the binding and reconfiguration of existing knowledge, through the generation of remote semantic associations and their combination in original and meaningful ways, respectively supported by the default mode (DMN) and executive control (ECN) networks.
At the crossroads of these two networks, the rostral prefrontal cortex (PFC) is proposed as a key hub for DMN-ECN interactions, possibly supporting the interplay between generative and combinatory creative processes. However, the specific contributions of its medial and lateral subdivisions to creativity remain unclear.
In this study, we aimed to characterize the involvement of the rostral PFC in creative cognition through the lens of behavioural variant frontotemporal dementia (bvFTD), a relevant pathological model as it primarily affects the rostral PFC and alters intrinsic connectivity within the DMN and ECN.
Using whole-brain voxel-based morphometry, we explored the brain regions critical for the generation and combination of remote semantic associates, respectively, but also for creative abilities, thought to involve both types of processes.
Using resting state functional connectivity and gradient mapping techniques, we also explored functional connectivity profiles within the rostral PFC and how connectivity variations within this region predict creative performance.
As a result, we found a critical role of the rostromedial PFC for generating remote semantic associations and of the rostrolateral PFC for combining semantic associates, while both regions were critical for creative abilities.
Moreover, we showed that intrinsic connectivity of rostral PFC is organized along a mediolateral functional gradient, segregating the rostromedial PFC, connected to the DMN, and the rostrolateral PFC, connected to the ECN.
Finally, we showed that the range of this functional gradient, representing the functional differentiation between the ECN and DMN, predicts creative abilities.
Overall, this study advances our understanding of creative cognition, its relationships to the anatomical and functional organization of the prefrontal cortex, and its impairment in bvFTD.
