quale

On Ayer's view, 'quale' formed the patterns constituting a primary system, and it was on the basis of this system that we posited the existence of physical objects, this being the ‘theoretical’ secondary system.

According to Block, what has remained the same is the 'qualia' of my experience; what has changed is the intentional content.

The 'qualia' of experience are mediated by linguistic and historical factors, but out-of-the-ordinary or mystical states are beyond mediation in their lack of intentional objects.

Sensory receptors provide information about the quality of the stimuli that they detect, giving rise to what philosophers call the 'qualia' of conscious perceptual experience.

Nonetheless the type-type identity theory has enjoyed a recent if modest resurgence at least with respect to 'qualia' or qualitative conscious properties.