How Babies Are Innately Equipped with the Neural Foundations for Mathematics

Recent studies show that infants possess a rudimentary understanding of numbers shortly after birth. Researchers have identified brain mechanisms that allow newborns to differentiate between groups of 4 and 12 stimuli, providing insight into this innate number sense.

According to Brian Butterworth from University College London, who was not part of the study, the ability to perceive numerical information is as instinctive as recognizing colors. It forms a fundamental component of our cognitive toolkit, essential for navigating the world around us.

Researchers from the University of Trento in Italy, led by Marco Buiatti, explored the neural mechanisms that underlie this intrinsic sense of numbers, independent of language or cultural influences. They equipped 21 newborns, aged just 0 to 3 days, with EEG caps to monitor their brain activity.

Buiatti notes the challenges of studying newborn cognition: “They’re awake for only a minute or two at a time, which makes the research complex but ultimately rewarding.”

During the study, infants listened to a 90-second audio of repeated sounds organized into groups of either 4 or 12 syllables. Concurrently, they were shown visual stimuli displaying either four or 12 dots.

The findings revealed that electrical activity in the infants’ parietotemporal cortex—responsible for sensory information processing—diminished when the number of dots matched the spoken syllables. This response did not occur with mismatched stimuli.

This adaptive response, known as repetition inhibition, aligns with known patterns in adult brain function. When our brains register a repeated stimulus, they efficiently reduce their response, allowing a more effective processing of new information.

Interestingly, mismatched stimuli triggered increased neural activity in the infants. “Introducing a new numerical stimulus disrupts this adaptive pattern,” Buiatti explains. “This research illustrates the neural foundations of our innate number sense for the first time.”

This intrinsic ability to distinguish between quantities offers significant evolutionary advantages, such as recognizing threats or food sources, crucial for survival.

Notably, children are shown to have a strong number sense by the age of one, which can be an important predictor of future mathematical abilities. Understanding the neural mechanisms behind this foundational skill could aid in identifying children at risk for dyscalculia—a learning disorder that impairs numerical comprehension and usage.

Buiatti emphasizes the importance of researching number sense at birth, as it lays the groundwork for advanced mathematical skills, potentially guiding the development of early neural biomarkers for dyscalculia.