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A dim view of M-cone onsets
Parry, Neil R.A. McKeefry, Declan J. Kremers, Jan Murray, I.J.
Parry, Neil R.A.
McKeefry, Declan J.
Kremers, Jan
Murray, I.J.
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2016-03
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Abstract
We investigated the brightness (i.e., perceived luminance) of isolated L- and M-cone pulses to seek a perceptual correlate of our previous reports that M-on electroretinograms resemble L-off responses, implying the operation of post-receptoral opponent processing. Using triple silent substitutions, cone increments were generated in a 4-primary ganzfeld, masked by random positive or negative luminance bias. The results show that M-cone increments decrease in brightness, while L-cone increments increase. These differences became smaller as field size reduced; this was not eccentricity or area dependent. We speculate about early retinal input into brightness perception.
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Parry NRA, McKeefry D, Kremers J, Murray, IJ (2016) A dim view of M-cone onsets. Journal of the Optical Society of America A. 33(3): A207-213.
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