How can an illuminated pointer improve accuracy when pointing toward a sound source?

An illuminated pointer improves accuracy when pointing toward a sound source by facilitating sensory interaction, specifically by anchoring one sense to another to assist in spatial perception.1

While humans often rely on both visual and tactile experiences to locate sound sources, the use of an illuminated pointer at the precise moment a sound is produced provides a visual reference that helps calibrate and stabilize the spatial judgment. This illustrates the broader principle that success in orientation and spatial perception is highest when environmental information is integrated across multiple senses, as the brain learns to perceive systematic relationships between simultaneously available stimuli.1