Surgery

Study reveals mechanics of the ideal surgical knot

Think about the last time you tied your shoe: maybe you tied it tightly, or tied multiple knots to ensure the laces wouldn't come undone. You likely relied on intuition to tell you how much tension to apply to keep the laces ...

Gastroenterology

A simple diagnostic tool for gastrointestinal disorders

As food moves through the digestive tract, contracting muscles along the tract keep things flowing smoothly. Loss of this motility can lead to acid reflux, failure of food to move out of the stomach, or constipation.

Psychology & Psychiatry

'Knowing how' is in your brain

Although we often think of knowledge as "knowing that" (for example, knowing that Paris is the capital of France), each of us also knows many procedures consisting of "knowing how," such as knowing how to tie a knot or start ...