View article

Parkinson's disease (PD), best characterized by its classic motor symptoms, also manifests non‐motor symptoms including perceptual impairments. Normal motor and perceptual brain functions interact continuously in an action–perception loop; hence, perceptual and motor dysfunction in PD are likely also intertwined. A vital skill in order to maintain balance, and to move around in the environment is the ability to perceive one's own motion in space (self‐motion perception). Self‐motion perception is a complex brain process, that requires the integration of information from visual (optic flow), vestibular (gravito‐inertial), and somatosensory senses. Yet, not much is known about self‐motion perception or multisensory integration in PD. In this review, we highlight the need to better study these important functions in PD. We review perceptual deficits in underlying functions required for adept self‐motion perception (visual …