University of Sussex
Browse

File(s) not publicly available

Complete sparing of high-contrast color input to motion perception in cortical color blindness

journal contribution
posted on 2023-06-07, 18:34 authored by Patrick Cavanagh, Marie-Anne Hénaff, François Michel, Theodor Landis, Tomasz Troscianko, James Intriligator
It is widely held that color and motion are processed by separate parallel pathways in the visual system, but this view is difficult to reconcile with the fact that motion can be detected in equiluminant stimuli that are defined by color alone. To examine the relationship between color and motion, we tested three patients who had lost their color vision following cortical damage (central achromatopsia). Despite their profound loss in the subjective experience of color and their inability to detect the motion of faint colors, all three subjects showed surprisingly strong responses to high-contrast, moving color stimuli — equal in all respects to the performance of subjects with normal color vision. The pathway from opponent-color detectors in the retina to the motion analysis areas must therefore be independent of the damaged color centers in the occipitotemporal area. It is probably also independent of the motion analysis area MT/V5, because the contribution of color to motion detection in these patients is much stronger than the color response of monkey area MT.

History

Publication status

  • Published

Journal

Nature Neuroscience

ISSN

1097-6256

Publisher

Nature Publishing Group

Issue

3

Volume

1

Page range

242-247

ISBN

1097-6256

Department affiliated with

  • Psychology Publications

Notes

Co-main author (design and execution of one of three experiments)

Full text available

  • No

Peer reviewed?

  • Yes

Legacy Posted Date

2012-02-06

Usage metrics

    University of Sussex (Publications)

    Categories

    No categories selected

    Exports

    RefWorks
    BibTeX
    Ref. manager
    Endnote
    DataCite
    NLM
    DC