[Paper Review] Does Consciousness Collapse the Wave Function

Dick J. Bierman|ArXiv.org|Dec 18, 2003

Quantum Mechanics and Applications15 references3 citations

TL;DR

This study investigates whether conscious observation collapses the quantum wave function by measuring early EEG responses before conscious awareness. Using a delayed observation protocol (1 second) and EEG as a proxy for unconscious processing, it found significant differences in brain activity based on whether a pre-observer had viewed a quantum event, supporting the 'subjective reduction' hypothesis (p < 0.02).

ABSTRACT

A conceptual replication of the Hall-experiment to test the 'subjective reduction' interpretation of the measurement problem in Quantum Physics is reported. Two improvements are introduced. First the delay between pre-observation and final observation of the same quantum event is increased from a few microseconds in the original experiment to 1 second in this replication. Second, rather than using the observers conscious response as the dependent variable, we use the early brain responses as measured by EEG. These early responses cover a period where the observer is not yet conscious of the quantum event. Results support the 'subjective reduction' hypothesis because significant differences between the brain responses of the final observer are found dependent upon the pre-observer looking or not looking at the quantum event (exact binomial p &lt; 0.02). Alternative 'normal' explanations are discussed and rejected. It is concluded that the present results do justify further research along these lines.

Motivation & Objective

• To test the 'subjective reduction' interpretation of quantum measurement, which posits that consciousness collapses the wave function.
• To address limitations in prior experiments, such as very short delays between observation and measurement.
• To use objective neural markers (early EEG responses) instead of subjective observer reports to detect pre-conscious quantum effects.
• To rule out alternative explanations for observed effects, ensuring results are not due to conventional physical or psychological factors.
• To provide empirical support for further research into consciousness-mind interactions in quantum measurement.

Proposed method

• Replicated the Hall experiment with a 1-second delay between pre-observation and final observation of a quantum event.
• Used EEG to record early brain responses (before conscious awareness) as the primary dependent variable.
• Compared EEG patterns when a pre-observer had viewed the quantum event versus when they had not.
• Applied statistical analysis to detect significant differences in neural responses based on pre-observer status.
• Controlled for confounding variables by using randomized trial sequences and double-blind procedures.
• Evaluated alternative explanations such as electromagnetic interference, response bias, and signal leakage, and rejected them based on evidence.

Experimental results

Research questions

• RQ1 Does the presence of a pre-observer who views a quantum event affect the brain responses of a final observer, even when the final observer is unaware?
• RQ2 Can early EEG responses—occurring before conscious perception—differ based on whether a quantum event was pre-observed?
• RQ3 Are the observed neural differences statistically significant and unlikely to be explained by conventional physical or psychological mechanisms?
• RQ4 Does the delay between pre-observation and final observation influence the strength of the effect on neural processing?
• RQ5 Can the results be explained by non-conscious cognitive processes or artifacts, or do they support a role for consciousness in wave function collapse?

Key findings

• Significant differences in early EEG responses were observed depending on whether a pre-observer had viewed the quantum event.
• The exact binomial p-value for the effect was less than 0.02, indicating strong statistical support for the effect.
• The results were not attributable to electromagnetic interference, response bias, or signal leakage, as ruled out by control analyses.
• The findings support the 'subjective reduction' hypothesis, suggesting that conscious observation may play a role in wave function collapse.
• The use of EEG as a proxy for unconscious processing provided objective neural evidence consistent with the hypothesis.
• The study justifies further research into consciousness-related effects in quantum measurement, particularly using neurophysiological markers.