Seeing the bigger picture: an amblyopic advantage in the global integration of moving visual information?

Authors

Hannah Jeffery, University of Plymouth

Document Type

Project Article

Abstract

Devices used to incorporate global information by normal and amblyopic eyes were investigated using the Classification Image (CI) technique. An orientation task with randomly orientated tilting Gabor patches and a motion-direction task using randomly directed moving discs were utilized. Participants judged the near-threshold average global orientation or motion-direction in each. CIs were calculated, adding noise samples eliciting correct responses and subtracting noise samples producing incorrect responses. Results illustrated normal participants had consistently narrow perceptive fields as was the case for amblyopes in the orientation task. For global motion-direction judgements, amblyopic perceptive fields were far wider, illustrating sparse sampling of elements. This reflected reduced inhibition for amblyopic motion processing mechanisms; a diminished suppression device proving advantageous for this type of observer.

Publication Date

2008-12-01

Publication Title

The Plymouth Student Scientist

Volume

1

Issue

2

First Page

186

Last Page

220

ISSN

1754-2383

Deposit Date

May 2019

Creative Commons License

This work is licensed under a Creative Commons Attribution 4.0 International License.

Recommended Citation

Jeffery, Hannah (2008) "Seeing the bigger picture: an amblyopic advantage in the global integration of moving visual information?," The Plymouth Student Scientist: Vol. 1: Iss. 2, Article 13.
DOI: https://doi.org/10.24382/ga8h-j426
Available at: https://pearl.plymouth.ac.uk/tpss/vol1/iss2/13