Head movements suggest canal and otolith projections are activated during galvanic vestibular stimulation.

Highlights: [•] Galvanic vestibular stimulation induced static changes in head tilt in guinea pigs. [•] The head tilt in 3D occurred predominantly within the roll and yaw planes. [•] Head tilts were asymmetrical for unilateral anodal and cathodal stimulation. [•] The static nature and direction of head tilt support otolith and canal activation. [•] The asymmetries suggest stimulation of irregularly discharging afferents. [ABSTRACT FROM AUTHOR]