Final answer:
The human semicircular canals transduce angular acceleration, which helps detect rotational movements of the head for balance.
Step-by-step explanation:
Human semicircular canals transduce angular acceleration as a type of stimulus. These canals are part of the inner ear's vestibular system and are sensitive to changes in velocity, such as turning or tilting the head. They contain hair cells with stereocilia extending into the cupula. When the head rotates, the movement of the fluid within the canals causes these stereocilia to bend, which is then translated into neural signals sent to the brain. This process allows for the detection of angular motion, thus helping with balance and spatial orientation.