measurement of voluntary horizontal locomotion in an experimental apparatus +
measurement of voluntary locomotion into, out of or within a discrete space in an experimental apparatus +
Any measurement of the movement of an organism from one place to another into, out of or within a distinct and specified area of an experimental apparatus (especially such a movement accomplished by the action of appendages such as flagella, limbs, or wings) originated, undertaken, controlled, or accomplished as a result of free will or choice.
time to first movement in an experimental apparatus +
time to locate a target in an experimental apparatus +