fresco wrote:The term "higher level thought" or even "thought" are pretty nebulous.
It might be better to use the term 'mental states' or 'intentional states' (states of the mind which are
about something). We have various mental states - such as beliefs, memories and perceptions - and we are concious
of them only when we have further mental states
about them. So a belief is only conscious if we have a second, higher-order mental state which has that belief as its subject. We are only conscious
that we believe in love when we are made aware
of that belief by thinking
about it. The higher-order thoughts themselves needn't be conscious.
As for the higher consciousness that you mention, presumably that's what some philosophers call 'phenomenal consciousness' or 'qualia'? I believe that the phenomenal aspect of consciousness comes about when we are made aware of the phenomenal aspects of our lower-order mental states. If we see a frog, we have a sensory experience with various qualities, such as greenness. If we are conscious of seeing a frog, or if we have a higher-order intentional state
about our frog-induced perceptual state, then we become aware of these qualities. We become
conscious of ourselves as being in certain qualitative states, and this creates the qualitative aspects of consciousness. So in the frog example, we become aware of ourselves as being in a green state, and, and this gives us a qualitatively green experience.
This is all taken from here:
David Rosenthal, "Explaining Consciousness," in Philosophy of Mind: Classical and Contemporary Readings, ed. David J. Chalmers, New York: Oxford University Press, 2002, pp. 406-421
The theory is also described here, as 'Higher-order thought theory (1)', although I haven't read this:
http://plato.stanford.edu/entries/consciousness-higher/