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A RED TOMATO IN PALE BLUE LIGHT APPEARS TO BE BROWN
COLOUR: COGNITIVE BRAIN PREDICTION VERSUS VISUAL PERCEPTION/PHOTOGRAPHICAL DOCUMENTATION
The English neuropsychologist Chris Frith tells us that in our brain the “true” colour of a given object (=as reflected when the object is illuminated with white light) to such a degree is predicted by prior experience , that coloured light falling on the object will not disturb our actual perception of that true colour. If a (red) tomato is illuminated with blue light,” it can´t reflect any red light, so does it now look blue? No. We still perceive it as red”, he asserts in his book MAKING UP THE MIND. How the Brain Creates our Mental World. (Blackwell Publishing, Malden, Oxford and Carlton, 2007, p. 132). This assertion is wrong; or better: what it claims is only the case, when the person looking at the tomato is convinced in advance that the brain, not the eye, is telling the truth. Our eyes certainly do not see a tomato as being red in blue light. To them it will appear brown in pale blue light and black in deep blue light. What they see is (almost) identical with the eye-like evidence of photography shown in my little photo experiment here.
A RED TOMATO IN PALE BLUE LIGHT APPEARS TO BE BROWN
COLOUR: COGNITIVE BRAIN PREDICTION VERSUS VISUAL PERCEPTION/PHOTOGRAPHICAL DOCUMENTATION
The English neuropsychologist Chris Frith tells us that in our brain the “true” colour of a given object (=as reflected when the object is illuminated with white light) to such a degree is predicted by prior experience , that coloured light falling on the object will not disturb our actual perception of that true colour. If a (red) tomato is illuminated with blue light,” it can´t reflect any red light, so does it now look blue? No. We still perceive it as red”, he asserts in his book MAKING UP THE MIND. How the Brain Creates our Mental World. (Blackwell Publishing, Malden, Oxford and Carlton, 2007, p. 132). This assertion is wrong; or better: what it claims is only the case, when the person looking at the tomato is convinced in advance that the brain, not the eye, is telling the truth. Our eyes certainly do not see a tomato as being red in blue light. To them it will appear brown in pale blue light and black in deep blue light. What they see is (almost) identical with the eye-like evidence of photography shown in my little photo experiment here.