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American Focus > Blog > Tech and Science > Your Brain Wrinkles Are Way More Important Than We Ever Realized : ScienceAlert
Tech and Science

Your Brain Wrinkles Are Way More Important Than We Ever Realized : ScienceAlert

Last updated: June 6, 2025 4:35 pm
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Your Brain Wrinkles Are Way More Important Than We Ever Realized : ScienceAlert
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Study Shows Complex Brain Folds Linked to Connectivity and Reasoning Abilities

The intricate folds and ridges of the human brain have long fascinated scientists, and a recent study from the University of California, Berkeley sheds light on how these structures may be connected to our cognitive abilities. The research focused on the lateral prefrontal cortex (LPFC) and lateral parietal cortex (LPC), regions responsible for reasoning and high-level cognition.

These folds, known as sulci, play a crucial role in brain development and function. The smallest grooves, tertiary sulci, are particularly interesting as they form later in life and are believed to enhance neural efficiency. The study aimed to explore how these sulci relate to cognitive processes.

Sulcal depth diagram
The researchers examined sulcal length and depth to understand their impact on cognition. (Jannsen et al., J. Neurosci, 2022)

Neuroscientist Kevin Weiner explains, “The formation of sulci may lead to increased connectivity between brain regions, resulting in improved cognitive abilities.” The study revealed distinct connectivity patterns within each sulci, suggesting a direct link between brain structure and communication efficiency.

Building on previous research, which found a correlation between sulcal depth and cognitive reasoning, the new study provides further insights into the relationship between brain folds and cognitive functions. These findings could have significant implications for understanding individual differences in cognition.

Sulcal brain maps
The researchers developed models to identify sulci accurately. (Häkkinen et al., J. Neurosci, 2025)

While the brain’s cortex is mostly hidden within folds, these patterns can vary between individuals and change over time. Neuroscientist Silvia Bunge notes, “Our unique configuration of sulci remains a stable individual trait, reflecting differences in size, shape, and location.” These brain structures are not just random folds but may have evolved to serve specific functions.

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Looking ahead, researchers plan to further explore the role of sulci in brain development and neurological disorders. Mapping these structures could offer valuable insights into cognitive development and potential interventions for brain-related conditions.

It’s important to note that cognitive abilities are influenced by various factors, including anatomical and functional features. Experience and environmental factors also play a significant role in shaping cognitive abilities throughout life.

The study has been published in the Journal of Neuroscience and marks a significant step towards understanding the intricate relationship between brain folds, connectivity, and cognitive functions.

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