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	<id>https://wiki.fusiongirl.app:443/index.php?action=history&amp;feed=atom&amp;title=Biophotons</id>
	<title>Biophotons - Revision history</title>
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	<updated>2026-05-12T09:46:33Z</updated>
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		<id>https://wiki.fusiongirl.app:443/index.php?title=Biophotons&amp;diff=6986&amp;oldid=prev</id>
		<title>JonoThora: Psionics expansion (01a + 01b): content authored / LaTeX-restored per local submodule; lint-clean.</title>
		<link rel="alternate" type="text/html" href="https://wiki.fusiongirl.app:443/index.php?title=Biophotons&amp;diff=6986&amp;oldid=prev"/>
		<updated>2026-05-11T20:47:05Z</updated>

		<summary type="html">&lt;p&gt;Psionics expansion (01a + 01b): content authored / LaTeX-restored per local submodule; lint-clean.&lt;/p&gt;
&lt;p&gt;&lt;b&gt;New page&lt;/b&gt;&lt;/p&gt;&lt;div&gt;= Biophotons =&lt;br /&gt;
&lt;br /&gt;
{{Audience_Sidebar&lt;br /&gt;
| difficulty   = Intermediate&lt;br /&gt;
| reading_time = 8 minutes&lt;br /&gt;
| prerequisites = Basic biology; basic optics (photon emission, photomultiplier detection).&lt;br /&gt;
| if_too_advanced_see = [[Cell-to-Cell_Communication_via_Light]]&lt;br /&gt;
| if_you_want_the_math_see = [[Coherent_Quantum_Effects_in_Biology]]&lt;br /&gt;
}}&lt;br /&gt;
&lt;br /&gt;
&amp;#039;&amp;#039;&amp;#039;Biophotons&amp;#039;&amp;#039;&amp;#039; — also called &amp;#039;&amp;#039;&amp;#039;ultraweak photon emission&amp;#039;&amp;#039;&amp;#039; (UPE) — are the faint, spontaneous emission of single photons by living cells and tissues. Discovered by Alexander Gurwitsch in the 1920s and developed quantitatively by Fritz-Albert Popp from the 1970s onward, biophoton emission is now &amp;#039;&amp;#039;&amp;#039;mainstream-accepted&amp;#039;&amp;#039;&amp;#039; as a phenomenon. The functional significance — whether biophotons carry information, mediate cell-to-cell signalling, or play a role in consciousness — remains under active research.&lt;br /&gt;
&lt;br /&gt;
Biophotons are central to the framework&amp;#039;s [[Biological_Substrate_of_Psi|biological substrate of psi]] story.&lt;br /&gt;
&lt;br /&gt;
== Basic phenomenology ==&lt;br /&gt;
&lt;br /&gt;
* &amp;#039;&amp;#039;&amp;#039;Intensity&amp;#039;&amp;#039;&amp;#039;: ~ 10&amp;lt;sup&amp;gt;−2&amp;lt;/sup&amp;gt;–10&amp;lt;sup&amp;gt;2&amp;lt;/sup&amp;gt; photons / s / cm&amp;lt;sup&amp;gt;2&amp;lt;/sup&amp;gt; at the cell-tissue surface. ~ 10 orders of magnitude below visible incandescent emission.&lt;br /&gt;
* &amp;#039;&amp;#039;&amp;#039;Spectrum&amp;#039;&amp;#039;&amp;#039;: spans 200 nm (UV) to 800 nm (visible-red), with broad peaks in the visible.&lt;br /&gt;
* &amp;#039;&amp;#039;&amp;#039;Tissue sources&amp;#039;&amp;#039;&amp;#039;: all living tissues; nervous tissue typically emits more than connective tissue; brain emits significantly.&lt;br /&gt;
* &amp;#039;&amp;#039;&amp;#039;Modulation&amp;#039;&amp;#039;&amp;#039;: emission rate depends on metabolic state, oxidative stress, electrical activity, light history.&lt;br /&gt;
* &amp;#039;&amp;#039;&amp;#039;Coherence&amp;#039;&amp;#039;&amp;#039;: several groups (especially Popp) report higher-order photon-counting statistics consistent with partial coherence — non-Poissonian distributions.&lt;br /&gt;
&lt;br /&gt;
== Detection ==&lt;br /&gt;
&lt;br /&gt;
Biophotons are detected with:&lt;br /&gt;
&lt;br /&gt;
* &amp;#039;&amp;#039;&amp;#039;Photomultiplier tubes (PMTs)&amp;#039;&amp;#039;&amp;#039; — most commonly Hamamatsu H7360 or equivalent single-photon-counting heads.&lt;br /&gt;
* &amp;#039;&amp;#039;&amp;#039;Single-photon-avalanche-diode (SPAD) detectors&amp;#039;&amp;#039;&amp;#039; — for time-resolved measurements.&lt;br /&gt;
* &amp;#039;&amp;#039;&amp;#039;CCD imaging&amp;#039;&amp;#039;&amp;#039; — for spatial imaging of biophoton emission (requires long integration times, ~ minutes-hours).&lt;br /&gt;
* &amp;#039;&amp;#039;&amp;#039;Faraday-cage / dark-room enclosure&amp;#039;&amp;#039;&amp;#039; — required to exclude environmental light at the femtowatt level.&lt;br /&gt;
&lt;br /&gt;
The instrumentation is mature; many labs worldwide make these measurements routinely.&lt;br /&gt;
&lt;br /&gt;
== History ==&lt;br /&gt;
&lt;br /&gt;
* &amp;#039;&amp;#039;&amp;#039;1923&amp;#039;&amp;#039;&amp;#039; — Alexander Gurwitsch discovers UV-range emission from dividing onion-root cells; coins the term &amp;quot;mitogenetic radiation&amp;quot;. His specific claim — that the radiation drives mitosis — is contested but the emission phenomenon is real.&lt;br /&gt;
* &amp;#039;&amp;#039;&amp;#039;1962–1970s&amp;#039;&amp;#039;&amp;#039; — Quickenden and Que Hee (1974), Slawinski and others build single-photon-counting equipment that quantifies the emission.&lt;br /&gt;
* &amp;#039;&amp;#039;&amp;#039;1970s–2000s&amp;#039;&amp;#039;&amp;#039; — Fritz-Albert Popp (Marburg / Neuss, Germany) develops the field as a discipline; characterises spectra, time-statistics, response to drugs, oxidative stress, and physiological state.&lt;br /&gt;
* &amp;#039;&amp;#039;&amp;#039;2000s–present&amp;#039;&amp;#039;&amp;#039; — Multi-group acceptance of the phenomenon; debate shifts to functional significance.&lt;br /&gt;
&lt;br /&gt;
== Biological mechanisms ==&lt;br /&gt;
&lt;br /&gt;
Several biochemical sources contribute to biophoton emission:&lt;br /&gt;
&lt;br /&gt;
# &amp;#039;&amp;#039;&amp;#039;Reactive oxygen species (ROS)&amp;#039;&amp;#039;&amp;#039; — superoxide, peroxide, singlet oxygen produce chemiluminescent emission upon reaction with biomolecules. Major source in metabolically-active tissue.&lt;br /&gt;
# &amp;#039;&amp;#039;&amp;#039;Excited-state biomolecules&amp;#039;&amp;#039;&amp;#039; — flavins, porphyrins, NADH fluorescence and phosphorescence following enzymatic excitation.&lt;br /&gt;
# &amp;#039;&amp;#039;&amp;#039;Lipid-peroxidation products&amp;#039;&amp;#039;&amp;#039; — singlet-oxygen-mediated reactions in membrane lipids.&lt;br /&gt;
# &amp;#039;&amp;#039;&amp;#039;Protein-cofactor relaxation&amp;#039;&amp;#039;&amp;#039; — Tryptophan, FAD, NAD relaxation in proteins.&lt;br /&gt;
&lt;br /&gt;
These chemical sources collectively account for the bulk of biophoton emission. The framework&amp;#039;s prediction is that additional ψ-coupled contributions exist on top of this chemical baseline.&lt;br /&gt;
&lt;br /&gt;
== Cognitive correlates ==&lt;br /&gt;
&lt;br /&gt;
Several studies report correlations between biophoton emission and cognitive activity:&lt;br /&gt;
&lt;br /&gt;
* &amp;#039;&amp;#039;&amp;#039;Dotta, Saroka, Persinger (2012)&amp;#039;&amp;#039;&amp;#039; — UPE from the right temporal head region correlates with EEG spectral power during visual-imagery tasks (r ≈ 0.95). See [[Dotta_Saroka_Persinger_2012]].&lt;br /&gt;
* &amp;#039;&amp;#039;&amp;#039;Tang and Dai (2014)&amp;#039;&amp;#039;&amp;#039; — UPE from hippocampal slices rises ~ 3–4× with K&amp;lt;sup&amp;gt;+&amp;lt;/sup&amp;gt;-induced depolarisation and drops to baseline with TTX (Na&amp;lt;sup&amp;gt;+&amp;lt;/sup&amp;gt;-channel blocker), establishing causal link to neural firing. See [[Tang_Dai_2014]].&lt;br /&gt;
* &amp;#039;&amp;#039;&amp;#039;Sun et al. (2010)&amp;#039;&amp;#039;&amp;#039; — confirms UPE-neural-firing link in independent rat-brain preparations.&lt;br /&gt;
* &amp;#039;&amp;#039;&amp;#039;Cifra and Pospíšil (2014)&amp;#039;&amp;#039;&amp;#039; — review of biophoton emission from brain tissue and methodological standards.&lt;br /&gt;
&lt;br /&gt;
== Cell-to-cell signalling ==&lt;br /&gt;
&lt;br /&gt;
A series of studies report that biophotons can mediate &amp;#039;&amp;#039;&amp;#039;non-chemical cell-to-cell communication&amp;#039;&amp;#039;&amp;#039; — one cell population influences another through a UV-transparent barrier that blocks chemical signals. See [[Cell-to-Cell_Communication_via_Light]] for the Kaznacheev 1980 protocol and Farhadi, Fels, Chaban replications.&lt;br /&gt;
&lt;br /&gt;
== Framework interpretation ==&lt;br /&gt;
&lt;br /&gt;
In the [[Psionics|psionic framework]]:&lt;br /&gt;
&lt;br /&gt;
* &amp;#039;&amp;#039;&amp;#039;Biophotons are an empirically-measurable signature&amp;#039;&amp;#039;&amp;#039; of cellular electromagnetic activity that is also a ψ-source via the αψ F&amp;lt;sub&amp;gt;μν&amp;lt;/sub&amp;gt; F&amp;lt;sup&amp;gt;μν&amp;lt;/sup&amp;gt; vertex.&lt;br /&gt;
* &amp;#039;&amp;#039;&amp;#039;Cognitively-driven biophoton modulation&amp;#039;&amp;#039;&amp;#039; (as observed by Dotta-Saroka-Persinger, Tang-Dai) is a direct empirical demonstration that mental state modulates a physically-measurable EM-and-photon channel.&lt;br /&gt;
* &amp;#039;&amp;#039;&amp;#039;Coherent biophoton emission&amp;#039;&amp;#039;&amp;#039; (Popp&amp;#039;s higher-order statistics) connects naturally to the framework&amp;#039;s prediction that coherent neural states have N-rather-than-√N coupling to ψ.&lt;br /&gt;
&lt;br /&gt;
Biophotons are therefore a primary &amp;#039;&amp;#039;&amp;#039;measurable substrate&amp;#039;&amp;#039;&amp;#039; for testing the framework&amp;#039;s predictions in the lab. The instrumentation is mature; the protocol design is the active research task.&lt;br /&gt;
&lt;br /&gt;
== Sanity checks ==&lt;br /&gt;
&lt;br /&gt;
* &amp;#039;&amp;#039;&amp;#039;Dead tissue&amp;#039;&amp;#039;&amp;#039; (no metabolic activity) → biophoton emission decays to baseline within hours. ✓ Established.&lt;br /&gt;
* &amp;#039;&amp;#039;&amp;#039;Antioxidant treatment&amp;#039;&amp;#039;&amp;#039; → reduced ROS-mediated emission. ✓ Established.&lt;br /&gt;
* &amp;#039;&amp;#039;&amp;#039;Hypoxia&amp;#039;&amp;#039;&amp;#039; → altered emission spectrum. ✓ Established.&lt;br /&gt;
* &amp;#039;&amp;#039;&amp;#039;ψ → 0&amp;#039;&amp;#039;&amp;#039; (in framework) → biophoton emission still occurs via standard biochemistry; framework predicts only ψ-coupled modulations vanish. ✓ ([[Sanity_Check_Limits]] §12.)&lt;br /&gt;
&lt;br /&gt;
== Open questions ==&lt;br /&gt;
&lt;br /&gt;
# Quantitative cognitive-modulation curves: how strong is the brain-state-to-biophoton coupling, and what is its frequency dependence?&lt;br /&gt;
# Independent replication of the Dotta-Saroka-Persinger correlation across multiple labs.&lt;br /&gt;
# Spectroscopic decomposition of cognitive vs metabolic vs ROS components.&lt;br /&gt;
# Cell-to-cell signalling: which receptor mediates reception? (Mitochondrial UV photoreceptors, opsins, tryptophan absorption are candidates.)&lt;br /&gt;
&lt;br /&gt;
== See Also ==&lt;br /&gt;
&lt;br /&gt;
* [[Cell-to-Cell_Communication_via_Light]]&lt;br /&gt;
* [[Coherent_Quantum_Effects_in_Biology]]&lt;br /&gt;
* [[Orchestrated_Objective_Reduction]] (next page in the Neuro/Bio reading path)&lt;br /&gt;
* [[Bioelectromagnetism]]&lt;br /&gt;
* [[Dotta_Saroka_Persinger_2012]]&lt;br /&gt;
* [[Tang_Dai_2014]]&lt;br /&gt;
* [[Biological_Substrate_of_Psi]]&lt;br /&gt;
* [[Fritz-Albert_Popp]]&lt;br /&gt;
&lt;br /&gt;
== References ==&lt;br /&gt;
&lt;br /&gt;
* Gurwitsch, A. G. (1923). &amp;quot;Die Natur des spezifischen Erregers der Zellteilung.&amp;quot; &amp;#039;&amp;#039;Archiv für Mikroskopische Anatomie und Entwicklungsmechanik&amp;#039;&amp;#039; 100: 11–40.&lt;br /&gt;
* Popp, F. A., Li, K. H., Gu, Q. (eds.) (1992). &amp;#039;&amp;#039;Recent Advances in Biophoton Research and Its Applications.&amp;#039;&amp;#039; World Scientific.&lt;br /&gt;
* Quickenden, T. I., Que Hee, S. S. (1974). &amp;quot;Weak luminescence from the yeast &amp;#039;&amp;#039;Saccharomyces cerevisiae&amp;#039;&amp;#039; and the existence of mitogenetic radiation.&amp;quot; &amp;#039;&amp;#039;Biochemical and Biophysical Research Communications&amp;#039;&amp;#039; 60: 764–770.&lt;br /&gt;
* Cifra, M., Pospíšil, P. (2014). &amp;quot;Ultra-weak photon emission from biological samples: Definition, mechanisms, properties, detection and applications.&amp;quot; &amp;#039;&amp;#039;Journal of Photochemistry and Photobiology B&amp;#039;&amp;#039; 139: 2–10.&lt;br /&gt;
* Dotta, B. T., Saroka, K. S., Persinger, M. A. (2012). &amp;quot;Increased photon emission from the head while imagining light in the dark is correlated with changes in electroencephalographic power.&amp;quot; &amp;#039;&amp;#039;Neuroscience Letters&amp;#039;&amp;#039; 513: 151–154.&lt;br /&gt;
* Tang, R., Dai, J. (2014). &amp;quot;Biophoton signal transmission and processing in the brain.&amp;quot; &amp;#039;&amp;#039;Journal of Photochemistry and Photobiology B&amp;#039;&amp;#039; 139: 71–75.&lt;br /&gt;
&lt;br /&gt;
[[Category:Psionics]]&lt;br /&gt;
[[Category:Biology]]&lt;br /&gt;
[[Category:Experiments]]&lt;/div&gt;</summary>
		<author><name>JonoThora</name></author>
	</entry>
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