My original post was the following quote:
"Nicholas Humphrey sees consciousness as having developed from more primitive sensations which lacked subjective qualities. These arose from early organism attempts to integrate sensory inputs into an internal representation of the outside world. Eventually, through natural selection, the signals began to turn in on themselves. These generated internal feedback, formed multiple representations and ultimately "privatized" sensations. Humphrey suggests that within self-sustaining inward loops, the subjective qualities of consciousness played a crucial role in the perception of time.
Richard Gregory builds on this suggestion of Humphrey, stressing that qualia are useful to "flag" the present moment. Gregory points out that increasingly complex organisms developed a need to identify representations of the present, as opposed to past memory and future anticipation. How does the mind know when is now? By adorning representations of the present with consciousness qualia.
Graham Cairns-Smith says that qualia must play a function to evolve, which implies that they must have a physical bases. He suggests that qualia are generated by biomolecular systems ("qualogens") whose diversified phylogeny matches that of the qualia themselves. He suggests that their underlying nature may be quantum-mechanical: feelings and sensations are associated with vast numbers of microscopic processes bound in some type of macroscopic quantum state.
Steven Mithen examines the fossil record to try and pin down the onset of the type of complex, higher order consciousness with which we are familiar. This type of consciousness, Mithen observes, must surely have grown from interactions among thought, language, behavior and material culture. He traces the course of human evolution in the 6 million years since humans and apes diverged. Mithen focuses on the construction of handaxes by several types of early humans which first appeared in the fossil record 1.4 million years ago. He argues that their construction required not only sensory-motor control and an understanding of fracture dynamics, but also a desire for symmetry, an ability to plan ahead, and internal (unspoken) language. Toolmaking flowed into art and agriculture some 50,000 years ago, representing, Mithen concludes, the "budding and flowering" of human consciousness.
William H. Calvin is concerned with higher levels of consciousness, seeing them as the top rungs in a hierarchical series of a dozen-or-so levels. Percolating upward through this hierarchy, Calvin explains, are the substrates for ideas, actions and sensations which emerge into consciousness by winning a competition with other possible ideas, actions, or sensations. Consciousness is the result of a Darwinian process not only over the course of evolution but in a moment-by-moment competition for a place in the sunshine of awareness."
Source with links:http://cognet.mit.edu/posters/TUCSON3/Hameroff.Evolution.html
Nicholas Humphrey's insight deserves merit and I think it should be explored further.
"Nicholas Humphrey sees consciousness as having developed from more primitive sensations which lacked subjective qualities. These arose from early organism attempts to integrate sensory inputs into an internal representation of the outside world. Eventually, through natural selection, the signals began to turn in on themselves. These generated internal feedback, formed multiple representations and ultimately "privatized" sensations. Humphrey suggests that within self-sustaining inward loops, the subjective qualities of consciousness played a crucial role in the perception of time.
Richard Gregory builds on this suggestion of Humphrey, stressing that qualia are useful to "flag" the present moment. Gregory points out that increasingly complex organisms developed a need to identify representations of the present, as opposed to past memory and future anticipation. How does the mind know when is now? By adorning representations of the present with consciousness qualia.
Graham Cairns-Smith says that qualia must play a function to evolve, which implies that they must have a physical bases. He suggests that qualia are generated by biomolecular systems ("qualogens") whose diversified phylogeny matches that of the qualia themselves. He suggests that their underlying nature may be quantum-mechanical: feelings and sensations are associated with vast numbers of microscopic processes bound in some type of macroscopic quantum state.
Steven Mithen examines the fossil record to try and pin down the onset of the type of complex, higher order consciousness with which we are familiar. This type of consciousness, Mithen observes, must surely have grown from interactions among thought, language, behavior and material culture. He traces the course of human evolution in the 6 million years since humans and apes diverged. Mithen focuses on the construction of handaxes by several types of early humans which first appeared in the fossil record 1.4 million years ago. He argues that their construction required not only sensory-motor control and an understanding of fracture dynamics, but also a desire for symmetry, an ability to plan ahead, and internal (unspoken) language. Toolmaking flowed into art and agriculture some 50,000 years ago, representing, Mithen concludes, the "budding and flowering" of human consciousness.
William H. Calvin is concerned with higher levels of consciousness, seeing them as the top rungs in a hierarchical series of a dozen-or-so levels. Percolating upward through this hierarchy, Calvin explains, are the substrates for ideas, actions and sensations which emerge into consciousness by winning a competition with other possible ideas, actions, or sensations. Consciousness is the result of a Darwinian process not only over the course of evolution but in a moment-by-moment competition for a place in the sunshine of awareness."
Source with links:http://cognet.mit.edu/posters/TUCSON3/Hameroff.Evolution.html
Nicholas Humphrey's insight deserves merit and I think it should be explored further.