Morning Rumination on Consciousness

snoopy doghouse2While lying in bed this Sunday morning a few thoughts on consciousness came to me. Morning insights can be useful or vapid — not sure which these are. But they’ve stuck in my head, like a tune that keeps replaying. I’d like to share them and discuss them. Three semi-awake assertions:

  1. A conscious agent must be able to make a statement of fact
  2. Consciousness is an act of communication
  3. The statement of fact cannot be the state itself; it must be a symbolic representation of state

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The Metaphor of the Deep Diver

whale deep v1For me, there are two great guiding metaphors. The first is Plato’s “allegory of the cave“, the notion that phenomena that humans perceive through their senses are weak, distorted shadows of reality. The allegory of the cave describes, accurately, the problem of human science in deciphering underlying truths of the natural world. The second myth is my reading of the central metaphor in Herman Melville’s Moby Dick. I’ll call it the metaphor of the deep diver. Continue reading

Dehaene’s book: Consciousness and the Brain

DehaeneBookCoverEvery ten years the scientific study of consciousness passes a milestone. A decade ago the milestone was the publication of Chrisof Koch’s book “Quest for Consciousness” (2004). “Quest” established the groundwork for a scientific approach to the study of consciousness and described progress using techniques of neuroscience and experimental psychology1.  Stenislas Dehaene’s book “Consciousness and the Brain: Deciphering how the Brain Codes our Thoughts” presents a mass of new data and along with new theory. I believe it is a major consolidation; a milestone marking the path towards the next decade.

This is the intro to my blog post/review. The entire post can be read at the BrainFacts Blog  site.

What is episodic memory good for?

The function of learning is clear: modifying behavior through experience. Memory, the storage of information that supports learning, is clearly necessary and valuable. Current psychology and neuroscience tell us that there are two memory systems enabled by separate neural systems. Procedural memory relies on reward circuitry and trial-and-error processes to mold efficient behaviors. Episodic memory stores specifc events in the life of the individual — but for what purpose? Continue reading

Is IIT Consciousness a One-Way Street?

one-wayIntegrated Information Theory (IIT) is Giulio Tononi’s bold concept of the the neural underpinnings of consciousness. Roughly, IIT proposes that the subjective component of consciousness emerges when an information-processing entity has lots of informational states, is interconnected (integrated), and has certain feedback properties. “Phi” is a computed property that can measure the instantaneous amount of integrated information an information in a system. According to IIT, consciousness emerges from any system that has a proper architecture, principally, having large numbers of independent, “integrated” states. Thus, the larger the Phi, the greater the conscious experience. The human brain has large information capacity and an integrated architecture; thus, during the waking state a human brain has lots of consciousness. Continue reading

Components of Personal Identity

fingerprintPersonal identity — the conscious awareness of self — originates in the cleavage of a nebulous universe into “self” and “world”. As the brain develops and diverse capabilities emerge, many of which are entwined with “self”, personal identity becomes more complex. Its functions and features transform. John Locke made an initial contribution, the notion that personal identity depends on a continuous autobiographical memory. The list below starts with autobiographical memory, and adds five additional components. Continue reading