Colour Adaptation Modifies the Temporal Properties of the Long- and Middle-Wave Cone Signals in the Human Luminance Mechanism

C. F. Stromeyer; P. D. Gowdy; A. Chaparro; S. Kladakis; J. D. Willen; R. E. Kronauer

doi:10.1111/j.1469-7793.2000.t01-1-00177.x

Colour Adaptation Modifies the Temporal Properties of the Long- and Middle-Wave Cone Signals in the Human Luminance Mechanism

C. F. Stromeyer, P. D. Gowdy, A. Chaparro, S. Kladakis, J. D. Willen, R. E. Kronauer

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

Abstract

<div class="line" id="line-7"> 1</div><div class="line" id="line-39"> The human luminance mechanism (LUM) detects rapid flicker and motion, summating the neurally integrated L′ and M’‘contrast’ signals from the long&hyphen; and middle&hyphen;wave cones, respectively.</div><div class="line" id="line-41"> <br/></div><div class="line" id="line-44"> 2</div><div class="line" id="line-46"> We previously observed large temporal phase shifts between the L′ and M′ signals in LUM, which were maximal and of reversed sign on green versus orange background fields and which were accompanied by large variations in the relative L′ and M′ contrast weights. The effects were modelled with phasic magnocellar retinal ganglion cells.</div><div class="line" id="line-48"> <br/></div><div class="line" id="line-51"> 3</div><div class="line" id="line-53"> The changing L’ versusM′ contrast weights in the model predict that the temporal dynamics of the L′ and M′ luminance signals will differ on green and orange fields. This is assessed with several protocols.</div><div class="line" id="line-55"> <br/></div><div class="line" id="line-58"> 4</div><div class="line" id="line-60"> Motion thresholds for 1 cycle deg−1 drifting gratings or static pulsed gratings on the orange field show that the M' signal is more temporally bandpass than the L' signal; this reverses on the green field. Strong motion due to the different dynamics of the L' and M' signals is even seen with a pair of L' and M' gratings pulsed simultaneously.</div><div class="line" id="line-62"> <br/></div><div class="line" id="line-65"> 5</div><div class="line" id="line-67"> Impulse response functions were measured with gratings pulsed spatially in phase or antiphase. The impulse response was clearly biphasic for the M' signal on the orange field and L' signal on the green field, while the other signals were more sustained. The impulse responses predicted the motion seen with gratings pulsed in spatial quadrature.</div>

Original language	American English
Journal	Journal of Physiology
Volume	526
DOIs	https://doi.org/10.1111/j.1469-7793.2000.t01-1-00177.x
State	Published - Jul 2000
Externally published	Yes

Keywords

luminance mechanism
long-wave cones
middle-wave cones
vision

Disciplines

Vision Science

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10.1111/j.1469-7793.2000.t01-1-00177.xLicense: Unspecified

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@article{d6037b62138941b9beb7c894fb65f976,

title = "Colour Adaptation Modifies the Temporal Properties of the Long- and Middle-Wave Cone Signals in the Human Luminance Mechanism",

abstract = " 1 The human luminance mechanism (LUM) detects rapid flicker and motion, summating the neurally integrated L′ and M’‘contrast’ signals from the long&hyphen; and middle&hyphen;wave cones, respectively. 2 We previously observed large temporal phase shifts between the L′ and M′ signals in LUM, which were maximal and of reversed sign on green versus orange background fields and which were accompanied by large variations in the relative L′ and M′ contrast weights. The effects were modelled with phasic magnocellar retinal ganglion cells. 3 The changing L’ versusM′ contrast weights in the model predict that the temporal dynamics of the L′ and M′ luminance signals will differ on green and orange fields. This is assessed with several protocols. 4 Motion thresholds for 1 cycle deg−1 drifting gratings or static pulsed gratings on the orange field show that the M' signal is more temporally bandpass than the L' signal; this reverses on the green field. Strong motion due to the different dynamics of the L' and M' signals is even seen with a pair of L' and M' gratings pulsed simultaneously. 5 Impulse response functions were measured with gratings pulsed spatially in phase or antiphase. The impulse response was clearly biphasic for the M' signal on the orange field and L' signal on the green field, while the other signals were more sustained. The impulse responses predicted the motion seen with gratings pulsed in spatial quadrature.",

keywords = "luminance mechanism, long-wave cones, middle-wave cones, vision",

author = "Stromeyer, {C. F.} and Gowdy, {P. D.} and A. Chaparro and S. Kladakis and Willen, {J. D.} and Kronauer, {R. E.}",

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year = "2000",

month = jul,

doi = "10.1111/j.1469-7793.2000.t01-1-00177.x",

language = "American English",

volume = "526",

journal = "Journal of Physiology",

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T1 - Colour Adaptation Modifies the Temporal Properties of the Long- and Middle-Wave Cone Signals in the Human Luminance Mechanism

AU - Stromeyer, C. F.

AU - Gowdy, P. D.

AU - Chaparro, A.

AU - Kladakis, S.

AU - Willen, J. D.

AU - Kronauer, R. E.

N1 - Enter your email address below. If your address has been previously registered, you will receive an email with instructions on how to reset your password. If you don't receive an email, you should register as a new user

PY - 2000/7

Y1 - 2000/7

N2 - 1 The human luminance mechanism (LUM) detects rapid flicker and motion, summating the neurally integrated L′ and M’‘contrast’ signals from the long&hyphen; and middle&hyphen;wave cones, respectively. 2 We previously observed large temporal phase shifts between the L′ and M′ signals in LUM, which were maximal and of reversed sign on green versus orange background fields and which were accompanied by large variations in the relative L′ and M′ contrast weights. The effects were modelled with phasic magnocellar retinal ganglion cells. 3 The changing L’ versusM′ contrast weights in the model predict that the temporal dynamics of the L′ and M′ luminance signals will differ on green and orange fields. This is assessed with several protocols. 4 Motion thresholds for 1 cycle deg−1 drifting gratings or static pulsed gratings on the orange field show that the M' signal is more temporally bandpass than the L' signal; this reverses on the green field. Strong motion due to the different dynamics of the L' and M' signals is even seen with a pair of L' and M' gratings pulsed simultaneously. 5 Impulse response functions were measured with gratings pulsed spatially in phase or antiphase. The impulse response was clearly biphasic for the M' signal on the orange field and L' signal on the green field, while the other signals were more sustained. The impulse responses predicted the motion seen with gratings pulsed in spatial quadrature.

AB - 1 The human luminance mechanism (LUM) detects rapid flicker and motion, summating the neurally integrated L′ and M’‘contrast’ signals from the long&hyphen; and middle&hyphen;wave cones, respectively. 2 We previously observed large temporal phase shifts between the L′ and M′ signals in LUM, which were maximal and of reversed sign on green versus orange background fields and which were accompanied by large variations in the relative L′ and M′ contrast weights. The effects were modelled with phasic magnocellar retinal ganglion cells. 3 The changing L’ versusM′ contrast weights in the model predict that the temporal dynamics of the L′ and M′ luminance signals will differ on green and orange fields. This is assessed with several protocols. 4 Motion thresholds for 1 cycle deg−1 drifting gratings or static pulsed gratings on the orange field show that the M' signal is more temporally bandpass than the L' signal; this reverses on the green field. Strong motion due to the different dynamics of the L' and M' signals is even seen with a pair of L' and M' gratings pulsed simultaneously. 5 Impulse response functions were measured with gratings pulsed spatially in phase or antiphase. The impulse response was clearly biphasic for the M' signal on the orange field and L' signal on the green field, while the other signals were more sustained. The impulse responses predicted the motion seen with gratings pulsed in spatial quadrature.

KW - luminance mechanism

KW - long-wave cones

KW - middle-wave cones

KW - vision

UR - https://physoc.onlinelibrary.wiley.com/doi/full/10.1111/j.1469-7793.2000.t01-1-00177.x

U2 - 10.1111/j.1469-7793.2000.t01-1-00177.x

DO - 10.1111/j.1469-7793.2000.t01-1-00177.x

M3 - Article

SN - 1769-7115

VL - 526

JO - Journal of Physiology

JF - Journal of Physiology

ER -

Colour Adaptation Modifies the Temporal Properties of the Long- and Middle-Wave Cone Signals in the Human Luminance Mechanism

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