. Author manuscript; available in PMC: 2008 Oct 20.

Published in final edited form as: J Vis. 2003;3(2):171–182. doi: 10.1167/3.2.5

Table 1.

Perceptually Equated Cone Stimulation Values and Michelson Contrasts.

		S+	S−	Cont.	L+M−	L−M+	Cont.	Lum+	Lum−	Cont.
ABR	L	0.0762	0.0757	0%	0.0790	0.0729	4%	0.0813	0.0706	7%
	M	0.0645	0.0642	0%	0.0593	0.0692	−8%	0.0689	0.0598	7%
	S	0.0730	0.0288	43%	0.0490	0.0490	0%	0.0524	0.0455	7%
CIS	L	0.0762	0.0757	0%	0.0790	0.0730	4%	0.0812	0.0707	7%
	M	0.0645	0.0642	0%	0.0594	0.0691	−8%	0.0688	0.0599	7%
	S	0.0730	0.0288	43%	0.0490	0.0490	0%	0.0524	0.0456	7%
CG	L	0.0762	0.0757	0%	0.0791	0.0728	4%	0.0814	0.0705	7%
	M	0.0645	0.0642	0%	0.0592	0.0693	−8%	0.0690	0.0597	7%
	S	0.0730	0.0288	43%	0.0490	0.0490	0%	0.0525	0.0454	7%
PBD	L	0.0762	0.0757	0%	0.0790	0.0729	4%	0.0812	0.0707	7%
	M	0.0645	0.0642	0%	0.0594	0.0692	−8%	0.0688	0.0599	7%
	S	0.0730	0.0288	43%	0.0490	0.0490	0%	0.0524	0.0456	7%
SMG	L	0.0762	0.0757	0%	0.0785	0.0734	3%	0.0805	0.0714	6%
	M	0.0645	0.0642	0%	0.0601	0.0685	−6%	0.0682	0.0605	6%
	S	0.0730	0.0288	43%	0.0490	0.0490	0%	0.0519	0.0461	6%

Values for each of the five subjects are listed. Note that the S-cone contrast was fixed and the contrasts along the other two axes (L−M and luminance) were equated to it psychophysically.