November 2002
Volume 2, Issue 7
Free
Vision Sciences Society Annual Meeting Abstract  |   November 2002
Do enriched visual displays improve infants' discrimination of optic flow patterns simulating self-motion?
Author Affiliations
  • Rick O. Gilmore
    Penn State University
Journal of Vision November 2002, Vol.2, 505. doi:10.1167/2.7.505
  • Views
  • Share
  • Tools
    • Alerts
      ×
      This feature is available to authenticated users only.
      Sign In or Create an Account ×
    • Get Citation

      Rick O. Gilmore; Do enriched visual displays improve infants' discrimination of optic flow patterns simulating self-motion?. Journal of Vision 2002;2(7):505. doi: 10.1167/2.7.505.

      Download citation file:


      © ARVO (1962-2015); The Authors (2016-present)

      ×
  • Supplements
Abstract

Both a looking time habituation and a modified forced-choice preferential looking (FPL) technique indicate that infants younger than six months of age discriminate optic flow patterns that simulate only large (>20°) changes in the direction of observer-motion along a simulated ground plane. Two experiments were conducted to examine whether infants' sensitivity differs under display conditions where information about heading direction and motion in depth is enriched. In Experiment 1, 3-, 4-, and 5-month-old infants were tested using FPL to measure discrimination between optic flow displays that simulated translation at 5 m/s along different trajectories of motion (12–90°) through a cloud-like pattern of random dots that filled two 15° (H) by 30° (V) regions at the 90 cm viewing distance. In Experiment 2, 3- to 6-month-olds were tested using similar techniques but with visually rich displays generated using a 3D animation rendering system. The displays incorporated visual cues to depth and direction change such as optic expansion, texture gradients, horizon cues, accretion and deletion of contours, and motion parallax. The data from both studies confirm the previous findings that heading direction discrimination thresholds are large (20–70°) in young infants and decline only modestly with increasing age. Enriched visual displays do not result in substantially lower discrimination thresholds relative to previous reports of responses toward ground plane patterns. Consequently, the relatively poor discrimination abilities found previously appear not to be due to specific display-related factors, but instead may reflect a diminished sensitivity to changes in the direction of self-motion that are specified by visual information.

Gilmore, R. O.(2002). Do enriched visual displays improve infants' discrimination of optic flow patterns simulating self-motion? [Abstract]. Journal of Vision, 2( 7): 505, 505a, http://journalofvision.org/2/7/505/, doi:10.1167/2.7.505. [CrossRef] [PubMed]
Footnotes
 Supported by the National Science Foundation (BCS-0092452). Thanks to Melissa Arnett and Tom Baker.
×
×

This PDF is available to Subscribers Only

Sign in or purchase a subscription to access this content. ×

You must be signed into an individual account to use this feature.

×