Functional Consciousness: Pillar 27:The Electromagnetic Question of Consciousness

Abstract

The slogan that “consciousness travels through light” can mean several physically distinct things: an external electromagnetic carrier required for awareness, an overlooked electromagnetic sense, an internal photonic or field-based communication layer, or electromagnetic conditions that merely constrain neural dynamics. These claims are not equivalent and must be tested separately.

The strong external-carrier version is hard to sustain. People remain conscious in darkness, radio-frequency shielding, strongly altered magnetic environments, and magnetically shielded settings. Ultraweak photon emission (biophotons) from living tissue is real and largely tied to oxidative metabolism, but no structured photonic code sufficient for cognition or consciousness has been shown. Weak environmental fields can still affect organisms through specialized transducers (e.g., avian magnetoreception; suggestive human EEG responses to Earth-strength field rotations), which shows that electromagnetic effects need not work by heating or overpowering neurons. That is sensation or modulation, not a source of consciousness.

The more consequential question is therefore endogenous. Neuronal currents generate electric and magnetic fields; those fields can act back on membranes and firing via ephaptic coupling. The loop neuronal activity → endogenous field → neuronal activity is physically real at local scales and is not reducible to ordinary synaptic transmission. It does not follow that the field is consciousness, nor does it close the Hard Problem. It does raise a narrower empirical question: whether the brain’s self-generated field does integrative work that synaptic, axonal, and neuromodulatory connectivity do not already capture, and at what spatial scale that work (if any) stops.

A constitutive claim would require experiments that separate conventional neuronal dynamics from field organization as far as physics allows. Until that contribution is established, electromagnetic theories of consciousness should be judged first as claims about neural physics, and only then as claims about experience. The transmitter sought outside the skull was not found; the transmitter and receiver may be the same living system.