A complex system of nerves and muscles enables the human eye to blink, gaze, and shift focus. The trochlear nerve is one of six cranial nerves that carry electrical impulses from the brain to the eye.

The brain is made up of many different parts, each responsible for maintaining certain processes in the body or mind. The medulla oblongata is a small area of the brain stem. Though it may be little, ...

For millions battling chronic nerve pain, even the softest touch can feel agonizing — but scientists may have uncovered a ...

While a sudden coughing fit is a protective reflex to clear the airway, chronic cough can be caused by multiple factors that must be investigated to determine treatment. Cough is just one of several ...

The trochlear nerve is also known as cranial nerve IV (CN-IV). It is the only cranial nerve that emerges dorsally from the brain (near the back), giving it the longest pathway. It is the smallest ...