Consul wrote: ↑November 30th, 2021, 5:07 pmI don't know if it's true, but the idea of phenomenal consciousness as a dynamic field of brainwaves is very interesting. Phenomenality may be some type of neuroelectricity, with particular experiences being particular wave patterns in a unitary neuroelectrical field.
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What are brainwaves?
Neurons communicate by generating brief electrical impulses (action potentials) and by brief alterations in voltage at their synapses (synaptic potentials) that cause release of neurotransmitters. These very weak electrical signals can be detected by inserting a microelectrode into the brain to penetrate or come into very close contact with a neuron. When a large number of neurons operate in synchrony, the combined effect of these small voltage signals builds, like the thunderous applause in an auditorium from people clapping hands in synchrony. Electrical activity in thousands of neurons operating together in the cerebral cortex (the outermost layer of the brain), builds to the extent that the electricity can penetrate the skull and be detected by electrodes on the scalp. Surprisingly, these electrical fluctuations are oscillatory (thus the name ‘brainwaves’). The rhythmic electrical activity oscillates at characteristic frequencies, from less than one cycle per second (delta waves) to over 60 cycles per second (gamma waves). Since this electrical activity reflects information processing going on in neural networks, normal and abnormal operation of cognitive functions can be assessed by monitoring brainwaves, and brain function can be altered by electrical or other means to change brainwaves. Moreover, as waves of all types interact in complex ways, brainwaves can couple together electrical activity in populations of neurons without them being wired together by synaptic connections. Coupling neurons in this way can form dynamic functional assemblies of neurons that synchronize, filter, and manipulate information processing in the brain."
—R. Douglas Fields:
https://psychwire.com/ask/topics/2jtge2 ... brainwaves
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Unfortunately:
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"We are only seeing the proverbial tip of the iceberg. Our current understanding of brainwaves is superficial. Current technology to interface with neural circuits is horribly primitive and utterly inadequate to achieve the potential we imagine is possible if we could really interface seamlessly with the electric brain, and if we understood in detail how the brain codes, processes, and retrieves information. But we are at a turning point in human history. For the first time, we are beginning to analyze and manipulate the human brain through electricity—the electricity that infuses this bodily organ with life and the electricity that we deliver into its cellular circuitry. This is significant, because in using this force of nature we are dealing directly with the fundamental mechanism by which this astonishing organ operates."
(Fields, R. Douglas.
Electric Brain: How the New Science of Brainwaves Reads Minds, Tells Us How We Learn, and Helps us Change for the Better. Dallas, TX: BenBella, 2020. pp. 388-9)
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"Brainwaves are categorized, like light waves, in spectral bands by their frequencies of oscillation. These different frequency bands are designated by the Greek letters alpha, beta, gamma, delta, and theta, but unfortunately, the alphabetic sequence of Greek letters does not correspond to the sequential increase in frequency, because some frequencies of brainwaves were discovered after certain Greek letters had already been used to name frequencies discovered earlier. Also, like colors, the cutoff frequencies for brainwave frequency bands vary somewhat in usage, just as the frequency of light waves that we call “yellow” is not sharply defined as it transitions into orange at the lower frequencies and green at the higher frequencies."
(p. 99)
"It is important to understand that, contrary to the simplistic descriptions that are sometimes given in the popular press, each frequency band of brainwaves does not “do” a specific cognitive function. Although some mental states are associated with each of these bands, these are generalizations. And just as there are a million or more colors, not just the nine basic colors we name, so too do brainwaves come in nearly infinite variation and combination."
(p. 102)
"Every frequency band of brainwave oscillation is the result of multiple complex processes taking place simultaneously in millions of neurons locally and globally in the brain: Each brainwave frequency band is not generated by a single oscillator resonating at a specific frequency. Brainwaves are interdependent. It is fascinating to look out at the ocean as breakers roll in and crash on the shore, and we can sit and enjoy watching the sea like this for hours. Watching the surf break is spellbinding not only for its natural beauty, but because of its intriguing complexity and endless variation. There is a rhythm to the waves, but the rhythm is dynamic—it changes. A series of enormous breakers will roll in and then there will be a hush, and in the lull smaller waves splash and sizzle in the wet sand. Superimposed on every ocean wave are smaller waves and ripples, all of them the product of countless forces of nature: the wind puffing in gusts, blowing in forceful flurries, and raging in gales of prevailing wind patterns globally and locally; swirling currents; swelling and ebbing tides; the forces of fluids in motion; the frictional drag of the shallow sandy bottom on the moving masses of water; the reflection of a violent impact with rock—all of these are recorded and displayed in each wave as it approaches the shore. So it is with brainwaves. Wave riding on wave, every one is the collective product of countless interactions, like a rhythmic seascape vibrant with global forces leaving traces in salt and surge."
(pp. 103-4)
(Fields, R. Douglas.
Electric Brain: How the New Science of Brainwaves Reads Minds, Tells Us How We Learn, and Helps us Change for the Better. Dallas, TX: BenBella, 2020.)
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