Wavelength discrimination in blindsight.

In the circumscribed, long-standing, clinically absolute visual field defects of three patients with vascular lesions that involved the optic radiation and visual cortex, forced-choice discrimination between coloured stimuli was tested. Paired stimuli were matched for luminous efficiency on the basi...

Full description

Bibliographic Details
Main Authors: Stoerig, P, Cowey, A
Format: Journal article
Language:English
Published: 1992
_version_ 1826271091708919808
author Stoerig, P
Cowey, A
author_facet Stoerig, P
Cowey, A
author_sort Stoerig, P
collection OXFORD
description In the circumscribed, long-standing, clinically absolute visual field defects of three patients with vascular lesions that involved the optic radiation and visual cortex, forced-choice discrimination between coloured stimuli was tested. Paired stimuli were matched for luminous efficiency on the basis of previous measurements of increment-threshold spectral sensitivity made in the same patients and at the same retinal positions. To different extents all patients could discriminate between narrowband wavelength stimuli. The results imply that despite the effects of retrograde degeneration on thalamic and retinal colour-processing channels, neurons which process wavelength information are still functional, although the information they transmit is not consciously perceived.
first_indexed 2024-03-06T21:51:10Z
format Journal article
id oxford-uuid:4b5060fc-477a-456e-81bd-0be2882d4b1f
institution University of Oxford
language English
last_indexed 2024-03-06T21:51:10Z
publishDate 1992
record_format dspace
spelling oxford-uuid:4b5060fc-477a-456e-81bd-0be2882d4b1f2022-03-26T15:42:50ZWavelength discrimination in blindsight.Journal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:4b5060fc-477a-456e-81bd-0be2882d4b1fEnglishSymplectic Elements at Oxford1992Stoerig, PCowey, AIn the circumscribed, long-standing, clinically absolute visual field defects of three patients with vascular lesions that involved the optic radiation and visual cortex, forced-choice discrimination between coloured stimuli was tested. Paired stimuli were matched for luminous efficiency on the basis of previous measurements of increment-threshold spectral sensitivity made in the same patients and at the same retinal positions. To different extents all patients could discriminate between narrowband wavelength stimuli. The results imply that despite the effects of retrograde degeneration on thalamic and retinal colour-processing channels, neurons which process wavelength information are still functional, although the information they transmit is not consciously perceived.
spellingShingle Stoerig, P
Cowey, A
Wavelength discrimination in blindsight.
title Wavelength discrimination in blindsight.
title_full Wavelength discrimination in blindsight.
title_fullStr Wavelength discrimination in blindsight.
title_full_unstemmed Wavelength discrimination in blindsight.
title_short Wavelength discrimination in blindsight.
title_sort wavelength discrimination in blindsight
work_keys_str_mv AT stoerigp wavelengthdiscriminationinblindsight
AT coweya wavelengthdiscriminationinblindsight