Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

The human vestibulo-ocular reflex during linear locomotion.

S T Moore1, E Hirasaki, T Raphan

  • 1Department of Neurology, Mount Sinai School of Medicine, New York, New York 10029, USA. steven.moore@mssm.edu

Annals of the New York Academy of Sciences
|November 17, 2001
PubMed
Summary

During walking, head movements activate the vestibulo-ocular reflexes. Eye movements compensate for head pitch and yaw, with the linear vestibulo-ocular reflex (IVOR) dominating near vision and the angular vestibulo-ocular reflex (aVOR) dominating far vision.

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Nonunion of a fracture of the body of the scapula: case report and literature review.

Journal of shoulder and elbow surgery·2001
Same author

Convection-enhanced intraparenchymal delivery (CEID) of cytosine arabinoside (AraC) for the treatment of HIV-related progressive multifocal leukoencephalopathy (PML).

Journal of neurovirology·2001
Same author

Molecular cloning and expression analysis of a mouse UDP-GlcNAc:Gal(beta1-4)Glc(NAc)-R beta1,3-N-acetylglucosaminyltransferase homologous to Drosophila melanogaster Brainiac and the beta1,3-galactosyltransferase family.

Glycoconjugate journal·2001
Same author

Growth and development of the pediatric cervical spine documented radiographically.

The Journal of bone and joint surgery. American volume·2001
Same author

CSF antiretroviral drug penetrance and the treatment of HIV-associated psychomotor slowing.

Neurology·2001
Same author

The PAWS program: Pediatric Animal Awareness and Safety.

Journal of emergency nursing·2001

Area of Science:

  • Neuroscience
  • Biomechanics
  • Ophthalmology

Background:

  • Locomotion involves complex head movements, including translation and rotation in vertical and horizontal planes.
  • These head movements generate linear and angular accelerations within the operational range of vestibulo-ocular reflexes.

Purpose of the Study:

  • To investigate the roles of the linear and angular vestibulo-ocular reflexes (IVOR and aVOR) in stabilizing gaze during locomotion.
  • To determine how target distance influences the contribution of IVOR and aVOR to eye movements.

Main Methods:

  • Analysis of head translation and rotation frequencies and magnitudes during walking.
  • Measurement of vertical and horizontal eye movements in relation to head motion.
  • Phase analysis of eye velocity relative to head velocity for near and far targets.
Keywords:
NASA Discipline NeuroscienceNon-NASA Center

Related Experiment Videos

Main Results:

  • Vertical head translation during walking occurs at stepping frequency (2 Hz) with peak acceleration of 0.37 g.
  • Lateral head translation occurs at stride frequency (1 Hz) with peak acceleration of 0.1 g.
  • Vertical eye movements shift from aVOR-dominant (compensating for pitch) at far distances to IVOR-dominant (compensating for translation) at near distances.
  • Horizontal eye movements are consistently aVOR-driven, compensating for head yaw across all viewing distances.

Conclusions:

  • Both IVOR and aVOR are crucial for gaze stabilization during locomotion.
  • The relative contribution of IVOR and aVOR to eye movements is modulated by viewing distance.
  • Understanding these reflexes provides insights into visual-motor control during dynamic activities.