Scale Invariance: A Cautionary Tale Against Reductionism
Brain Basics / Did You Know? / Popular Articles

Scale Invariance: A Cautionary Tale Against Reductionism

How long is the coast of Britain?  It doesn’t matter how good your geography is — the answer depends on the size of your measuring stick.  The coast of Britain has twists and turns at all spatial scales, from kilometers to millimeters.  And the smaller the measuring stick used, the longer the measured length of … Continue reading

Seeing Invisible Colors
Brain Basics / Popular Articles / Sensation and Perception

Seeing Invisible Colors

What would the world be like without color?  Imagine you are a neurophysiologist, who studies color perception.  You know that light is a wave and that humans perceive color according to differential activation of color receptors, known as cones, in the retina.  You know that red cones are sensitive to long wavelengths, green cones are … Continue reading