Objective specification of tritanopic confusion lines using visual evoked potentials

A. G. Robson; J. J. Kulikowski

doi:10.1016/S0042-6989(98)00058-3

Objective specification of tritanopic confusion lines using visual evoked potentials

A. G. Robson, J. J. Kulikowski

Research output: Contribution to journal › Article › peer-review

Abstract

The minimum distinct border (MDB) between different isoluminant hues of a bipartite field was set subjectively by adjustment and then according to a 3-point rating allowing determination of the S-cone specific (tritanopic) axis. This rating was compared with visual evoked potentials (VEPs) generated by coarse, isoluminant gratings, modulated along the same chromatic axes. Psychophysically determined tritanopic gratings elicited monophasic onset VEPs with the longest latency for each subject. Departure from this axis produced additional earlier negative components (reflecting additional response mechanisms). Colour-selective VEPs can, therefore, objectively specify tritanopic confusion lines with a comparable degree of accuracy to MDB judgements.

Original language	English
Pages (from-to)	3499-3503
Number of pages	4
Journal	Vision Research
Volume	38
Issue number	21
DOIs	https://doi.org/10.1016/S0042-6989(98)00058-3
Publication status	Published - Nov 1998

Keywords

Colour visual evoked potentials
Colour-opponency
Minimum-distinct border
S-cone responses

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10.1016/S0042-6989(98)00058-3

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title = "Objective specification of tritanopic confusion lines using visual evoked potentials",

abstract = "The minimum distinct border (MDB) between different isoluminant hues of a bipartite field was set subjectively by adjustment and then according to a 3-point rating allowing determination of the S-cone specific (tritanopic) axis. This rating was compared with visual evoked potentials (VEPs) generated by coarse, isoluminant gratings, modulated along the same chromatic axes. Psychophysically determined tritanopic gratings elicited monophasic onset VEPs with the longest latency for each subject. Departure from this axis produced additional earlier negative components (reflecting additional response mechanisms). Colour-selective VEPs can, therefore, objectively specify tritanopic confusion lines with a comparable degree of accuracy to MDB judgements.",

keywords = "Colour visual evoked potentials, Colour-opponency, Minimum-distinct border, S-cone responses",

author = "Robson, {A. G.} and Kulikowski, {J. J.}",

year = "1998",

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TY - JOUR

T1 - Objective specification of tritanopic confusion lines using visual evoked potentials

AU - Robson, A. G.

AU - Kulikowski, J. J.

PY - 1998/11

Y1 - 1998/11

N2 - The minimum distinct border (MDB) between different isoluminant hues of a bipartite field was set subjectively by adjustment and then according to a 3-point rating allowing determination of the S-cone specific (tritanopic) axis. This rating was compared with visual evoked potentials (VEPs) generated by coarse, isoluminant gratings, modulated along the same chromatic axes. Psychophysically determined tritanopic gratings elicited monophasic onset VEPs with the longest latency for each subject. Departure from this axis produced additional earlier negative components (reflecting additional response mechanisms). Colour-selective VEPs can, therefore, objectively specify tritanopic confusion lines with a comparable degree of accuracy to MDB judgements.

AB - The minimum distinct border (MDB) between different isoluminant hues of a bipartite field was set subjectively by adjustment and then according to a 3-point rating allowing determination of the S-cone specific (tritanopic) axis. This rating was compared with visual evoked potentials (VEPs) generated by coarse, isoluminant gratings, modulated along the same chromatic axes. Psychophysically determined tritanopic gratings elicited monophasic onset VEPs with the longest latency for each subject. Departure from this axis produced additional earlier negative components (reflecting additional response mechanisms). Colour-selective VEPs can, therefore, objectively specify tritanopic confusion lines with a comparable degree of accuracy to MDB judgements.

KW - Colour visual evoked potentials

KW - Colour-opponency

KW - Minimum-distinct border

KW - S-cone responses

U2 - 10.1016/S0042-6989(98)00058-3

DO - 10.1016/S0042-6989(98)00058-3

M3 - Article

SN - 0042-6989

VL - 38

SP - 3499

EP - 3503

JO - Vision Research

JF - Vision Research

IS - 21

ER -

Objective specification of tritanopic confusion lines using visual evoked potentials

Abstract

Keywords

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