Lateral Thinking about Lateral Inhibition

IT has recently been asserted1 that the well known apparent expansion of acute angles is due not to the lateral inhibition proposed by Blakemore et al.2, but to an adaptation effect similar to the Gibson tilt after-effect3,4. The arguments by which Coltheart arrives at this conclusion, however, seem to us to be based on a complete misreading, and hence misrepresentation, of our article, which we should like to correct.