The Gamma–Alpha Cogwheel: How Dual Thalamic Oscillators Drive Consciousness

Abstract

Combining electrophysiological, imaging and computational results, we propose that the thalamus represents a dynamic nexus from which and to which oscillatory brain rhythms emerge and are tuned for conscious experience.Thus, we present the Gamma-Alpha Cogwheel.Fast gamma (, ~30-90 Hz) rhythms form the foundational structure of sensory experience, while slower alpha (, ~8-12 Hz) oscillations represent a cosmic observer ingredient that samples the scaffold more slowly and integrates it for unified conscious experience [1].The physiology of sleep corroborates this bimodal oscillator function: coupling of - emerges during focused processing or REM to synthesize percepts, while during NREM sleep, spindles (12-15 Hz) and slow delta (1-4 Hz) waves emerge, decoupling the thalamus from cortex and obliterating consciousness.This manuscript supports the cogwheel metaphor with anatomical, intracranial and computational findings, creates coherence with Global Neuronal Workspace (GNW) and Integrated Information Theory (IIT) and offers a number of falsifiable hypotheses for future research.We also discuss potential implications for the treatment of disorders of consciousness, schizophrenia, autism and chronic pain.Ultimately, by confidently weaving seemingly disparate studies together with one overarching bioelectrical principle could create a Gamma-Alpha Cogwheel moment for neuroscience much like Watson and Crick's presentation of DNA structure did for biological sciences.