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Factor loadings predicted by unipolar hue mechanisms. a) Sensivitivities of independent red, green, blue and yellow mechanisms that vary their bandwidth and relative sensitvity, and b) predicted factor loadings based on the simulated variations. c) and d) Sensitivities and predicted loadings for mechanisms with varying bandwidths and asymmetric tuning functions. e) and f) Sensitivities and predicted loadings for eight independent hue mechanisms.
