A 16th-century drawing of Leonardo da Vinci suggests that the artist sustained traumatic nerve damage to his right hand that impaired his painting skills late in life, according to a new study. Dr.

Begin by sketching Gohan’s overall pose. Draw a light stick figure to plan posture and movement. Keep the shoulders slightly wider than the waist. Add a circle for the head and an oval for the chest.

AI and human-movement research intersect in a study that enables precise estimation of hand muscle activity from standard video recordings. Using a deep-learning framework trained on a large, ...