Optical illusions are great at testing your visual perception and seeing how your brain interprets visual context, subtle ...

Optical illusions with hidden images are real-time tests of your observation power. Test your visual processing skills with ...

Critical flicker fusion (CFF), a measure of visual processing speed, predicts executive function in younger and older adults and may be helpful in predicting decline in executive function, say ...

Your brain is a fascinating machine, capable of processing vast amounts of information within seconds. But how good is it at detecting hidden details in complex environments? Optical illusions like ...