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> The color yellow has been an issue for many decades and diverse combinations of wavelengths evoke identical conscious yellow percepts. How can you possibly d
by JadeNB 2y ago
> The color yellow has been an issue for many decades and diverse combinations of wavelengths evoke identical conscious yellow percepts.
How can you possibly determine whether different stimuli evoke identical percepts? (I don't know a technical definition of ‘percept,’ but am assuming that it carries some additional data beyond something that can be directly measured from brain activity. If not, then I withdraw my question.)
- gmueckl 2y agoHistorically, this has been determined by presenting stimuli simultaneously and asking the subject about their similarity; alternatively by presenting a reference stimulus next to a tunable stimulus (e.g. red, green and blue monochromatic light sources) and asking the subject to match the two stimuli as closely as possible.
- _nalply 2y agoAnd for animals like dogs and some birds, set up a reward system, train the animal, then run tests and deduct what can be seen by the behavior of the trained animal. Dogs see only two colors, this means compared to humans they are color-blind (or something like red-green blind).