You searched for: “tropotaxis
tropotaxis
1. The movement of an organism toward or away from a stimulus as a result of comparing sensory input received from paired receptors on both sides of the body.
2. The movement or orientation of an organism in response to two stimuli, especially lights, by means of different sense organs.
3. The movement or orientation of an organism in response to the difference in stimulation of two symmetrically placed receptors.