Scientists Launch Project to Map the Brain’s “Sixth Sense”
A groundbreaking initiative backed by the National Institutes of Health (NIH) has begun to chart the complex network of interoception – the brain’s ability to sense the body’s internal state – potentially revolutionizing our understanding of health and disease.
The five-year, $14.2 million project, a collaboration between experts at the Scripps Research Institute and the Allen Institute, aims to create the first comprehensive neural atlas of interoception. Led by Nobel laureate Dr. Ardem Patapoutian of Scripps Research, the team will trace the routes of sensory neurons from the spinal cord to internal organs and use genetic profiling to identify neuron types responsible for signals from organs like the gut and bladder. This research is crucial because disruptions in interoception have been linked to a wide range of conditions, from autoimmune disorders to neurodegenerative diseases.
Interoception, often described as a “hidden sixth sense,” is responsible for fundamental functions like recognizing hunger, thirst, and regulating stress responses. “My team is honored that the NIH is supporting the kind of collaborative science needed to study such a complex system,” said Dr. Patapoutian. Unlike senses like vision or hearing, interoception monitors internal processes such as heartbeat, digestion, and immune activity – signals that have historically been difficult to record and interpret. Understanding these pathways could lead to new treatments for conditions where brain-body communication is impaired; learn more about interoception from the National Institute of Neurological Disorders and Stroke.
The project will unfold in two phases, utilizing advanced imaging and genetic techniques to map neural connections and distinguish neuron types. Dr. Li Ye, a professor at Scripps, stated, “We hope our results will help other scientists ask new questions about how internal organs and the nervous system stay in sync.” The resulting atlas will serve as a foundational resource for body-brain research, offering insights into maintaining internal stability and potentially restoring it when disrupted. This work builds on decades of research into the neural basis of interoception.
Researchers anticipate the atlas will be completed within five years, paving the way for further investigation into the role of interoception in health and disease.
