Visuospatial perception and navigation in Parkinson's disease

Daniel E. Young, Robert C. Wagenaar, Cheng Chieh Lin, Ying Hui Chou, Sigurros Davidsdottir, Elliot Saltzman, Alice Cronin-Golomb

Research output: Contribution to journalArticlepeer-review

22 Scopus citations

Abstract

A shifted field of view, an altered perception of optic flow speed, and gait asymmetries may influence heading direction in Parkinson's disease (PD). PD participants (left body-side onset, LPD, n=14; right body-side onset, RPD, n=9) and Healthy Control participants (n=17) walked a virtual hallway in which the optic flow speeds of the walls varied. Three-dimensional kinematics showed participants veered away from the faster moving wall. Although veering normally occurs toward the side with smaller step length, in both LPD and RPD this bias was overridden by a shifted field of view, which caused veering in the opposite direction, toward the side of the brain with more basal ganglia damage.

Original languageEnglish (US)
Pages (from-to)2495-2504
Number of pages10
JournalVision Research
Volume50
Issue number23
DOIs
StatePublished - Nov 23 2010
Externally publishedYes

Keywords

  • Field of view
  • Flow
  • Heading
  • Optic
  • Parkinson's disease

ASJC Scopus subject areas

  • Ophthalmology
  • Sensory Systems

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