Consciousness and the Double-Slit Interference Pattern: Six Experiments
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Plain English Summary
Can your mind mess with light itself? That's the wild question behind this series of six experiments. Researchers used a classic physics setup called a double-slit system -- where a laser beam passes through two tiny slits and creates a striped pattern of light and dark bands called an interference pattern. The twist: they asked people to focus their attention on the system to see if just thinking about it could change the pattern. Across 250 sessions with 137 participants, the interference pattern genuinely shifted when people concentrated on it compared to when they relaxed, and the statistical evidence was strong (the odds of this happening by chance were about one in a million). When nobody was watching -- in 250 control sessions run without observers -- nothing happened. That's a pretty striking contrast. People who practiced meditation produced bigger effects than non-meditators, which is fascinating. Brain wave measurements showed a small but real connection between alpha waves (the kind associated with calm focus) and the light pattern changes. People who believed in psychic phenomena and who scored high on "absorption" (the ability to get deeply immersed in experiences) also did better. The team carefully ruled out boring explanations like temperature shifts, vibrations, and equipment drift. Even the Earth's magnetic field activity seemed to play a role in modulating the results. This study became a cornerstone for a whole research direction exploring whether consciousness might be linked to quantum physics -- the idea that the mind might play a role in how quantum systems behave at a fundamental level.
Actual Paper Abstract
A double-slit optical system was used to test the possible role of consciousness in the collapse of the quantum wavefunction. The ratio of the interference pattern's double-slit spectral power to its single-slit spectral power was predicted to decrease when attention was focused toward the double slit as compared to away from it. Each test session consisted of 40 counterbalanced attention-toward and attention-away epochs, where each epoch lasted between 15 and 30 s. Data contributed by 137 people in six experiments, involving a total of 250 test sessions, indicate that on average the spectral ratio decreased as predicted (z=-4:36, p=6Β·10-6). Another 250 control sessions conducted without observers present tested hardware, software, and analytical procedures for potential artifacts; none were identiο¬ed (z=0:43, p=0:67). Variables including temperature, vibration, and signal drift were also tested, and no spurious inο¬uences were identiο¬ed. By contrast, factors associated with consciousness, such as meditation experience, electrocortical markers of focused attention, and psychological factors including openness and absorption, signiο¬cantly correlated in predicted ways with perturbations in the double-slit interference pattern. The results appear to be consistent with a consciousness-related interpretation of the quantum measurement problem.
Research Notes
Novel experimental approach connecting psi to quantum measurement problem. Six-experiment series provides converging evidence with appropriate controls, EEG correlates, and meaningful individual-differences findings. Addresses key alternative explanations (temperature, vibration, drift). Foundational for quantum-consciousness research paradigm in psi.
Six experiments tested whether consciousness influences the double-slit interference pattern. A HeNe laser double-slit system measured the spectral ratio (R) of double-slit to single-slit power. Across 250 test sessions with 137 participants, R decreased during attention-toward epochs compared to attention-away epochs (combined z=-4.36, p=6Γ10β»βΆ). Control sessions (N=250) without observers showed no effect (z=0.43). Meditators produced larger effects than non-meditators. EEG alpha power correlated with R changes (r=0.027, p=0.004). Performance correlated with belief in psychic phenomena and absorption capacity. Geomagnetic field activity modulated effects. Results are consistent with consciousness-related interpretations of quantum measurement.
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- False-Positive Effect in the Radin Double-Slit Experiment on Observer Consciousness as Determined with the Advanced Meta-Experimental Protocol β Walleczek, Jan (2019)
- False-Positive Effect in the Radin Double-Slit Experiment on Observer Consciousness as Determined With the Advanced Meta-Experimental Protocol β Walleczek, Jan (2019)
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- Commentary: False-Positive Effect in the Radin Double-Slit Experiment on Observer Consciousness as Determined With the Advanced Meta-Experimental Protocol β Radin, Dean (2020)
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π Cite this paper
Radin, Dean, Michel, Leena, Galdamez, Karla, Wendland, Paul, Rickenbach, Robert, Delorme, Arnaud (2012). Consciousness and the Double-Slit Interference Pattern: Six Experiments. Physics Essays. https://doi.org/10.4006/0836-1398-25.2.157
@article{radin_2012_consciousness,
title = {Consciousness and the Double-Slit Interference Pattern: Six Experiments},
author = {Radin, Dean and Michel, Leena and Galdamez, Karla and Wendland, Paul and Rickenbach, Robert and Delorme, Arnaud},
year = {2012},
journal = {Physics Essays},
doi = {10.4006/0836-1398-25.2.157},
}