Scientists Discover Longest Neuron and Map Brain's 'Blue Place'

Just now September 17, 2026 1 min read 📰 Medical Xpress

📋 Key Takeaway

Scientists have mapped the locus coeruleus in the brain, which is crucial for stress response and learning, and discovered the longest neuron ever measured in a mouse. This research is significant for understanding brain function and could have implications for neurological studies. While the article does not directly relate to Iran, advancements in neuroscience may influence healthcare and research policies in the country.

Deep in the brainstem sits a small but important cluster of neurons known as the locus coeruleus (LC), Latin for "blue place." It makes up a tiny fraction of the brain's cells but plays an important role by releasing the chemical messenger norepinephrine (NE). NE activates the body's response to stress or excitement, affects attention and learning, and affects heart rate.