Coloured hearing synaesthetes experience colours to heard words, as confirmed by reliability of self-report, psychophysical testing and functional neuroimaging data. Some also describe the 'alien colour effect' (ACE): in response to colour names, they experience colours different from those named. We have previously reported that the ACE slows colour naming in a Stroop task, reflecting...
Abstract After millennia of philosophical speculation, the problem of consciousness has entered the experimental laboratory. Though this development is of recent date (just a few decades or so), it is now rapidly gathering speed. The fundamental assumption underlying it—that empirical research has a good chance of resolving the issues that have not yielded to philosophical argument—is open to...
AbstractThe first claim in the target article was that there is as yet no transparent, causal account of the relations between consciousness and brain-and-behaviour. That claim remains firm. The second claim was that the contents of consciousness consist, psychologically, of the outputs of a comparator system; the third consisted of a description of the brain mechanisms proposed to instantiate...