Human fields and their impact on brain waves A pilot study

Jesus Acosta-Elias; Omar Vital-Ochoa; Ricardo Espinosa-Tanguma; Santiago Mendez-Moreno

REVIEW 5 major objections 6 minor 10 references

Human fields and their impact on brain waves A pilot study

T0 review · 5 major / 6 minor · reviewed 2026-08-09 · deepseek-v4-flash

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Pith's one-line read Holding a palm near the top of the head, without contact or the participant's knowledge, was followed by a significant drop in EEG power; the no-intervention control showed no drop.

desk verdict A suggestive but confounded pilot: the EEG change is real, but the 'human field' interpretation is unsupported by a design that lacks any sham or between-group comparison. read the letter →

arxiv 2502.01939 v1 pith:RONQJAIU submitted 2025-02-04 q-bio.NC physics.bio-ph

Jesus Acosta-Elias , Santiago Mendez-Moreno , Omar Vital-Ochoa , Ricardo Espinosa-Tanguma This is my paper · ORCID

classification q-bio.NCphysics.bio-ph PACS 87.18.Sn87.85.D87.85.Ng

keywords EEGpowerspectraldensityhumanfieldWilcoxonsigned-ranktestCzelectrodenon-contactinterventionbrainwavespilotstudy

verification ladder T0 review T1 audit T2 compute T3 formal

The pith

A machine-rendered reading of the paper's core claim, the machinery that carries it, and where it could break.

The reading

This pilot study asks whether a field emitted by the human body can alter the brain's electrical activity, the way transcranial magnetic stimulation does. Thirty healthy participants sat with eyes closed while an experimenter held a palm motionless just above the top of the head, at the scalp location called Cz, for 60 seconds without touching the participant. The paper compares EEG power spectral density in the 30 seconds before the hand approached with the final 30 seconds while the hand was held there. In the intervention group the before value was significantly higher than the during value (exact Wilcoxon signed-rank test, p = 0.004353), while a no-intervention control group showed no such decrease. The authors take this as preliminary evidence that close, non-contact proximity of a human hand is associated with a drop in overall EEG power.

What carries the argument

The argument runs on paired comparisons of EEG power spectral density (PSD), a summary of how much electrical power the raw EEG signal carries across frequencies, computed at the single scalp location Cz. PSD is calculated for the first 30 seconds of baseline and the final 30 seconds of the 60-second condition, deliberately from the raw signal rather than from separate frequency bands so that a change in any band registers. The statistical machinery is the exact Wilcoxon signed-rank test, chosen because the Shapiro-Wilk test showed the PSD values are not normally distributed; it tests whether the median of the paired differences favors the baseline over the final segment. The proposed mechanism—the 'human field'—is the paper's name for an unmeasured field with amplitude, frequency, and phase that could affect neurons through resonance or an unknown interaction.

What would settle it

Run the identical protocol with a sham object—say, an insulated plastic rod moved to the same spot above the head and held there for 60 seconds—with participants unable to tell whether it is a hand or a rod. If the same drop in brain-wave power appears with the rod, the effect is not specific to a human field; if it does not, the field interpretation is supported. A distance test would also settle it: if the effect fades smoothly as the hand is moved further away, that pattern fits a field; if it disappears once the hand cannot be seen or heard, a sensory cue is implicated.

Watch

Extended reading notes

Core claim

The central claim is that a human hand held near the scalp changes the brain's measured electrical state. In the intervention group, the median power spectral density of the raw EEG at Cz over the final 30 seconds of the hand-held-near-head condition was lower than the median PSD over the 30 seconds before the hand approached, with a p-value of 0.004353 under the exact Wilcoxon signed-rank test. In the control group, the before/after comparison gave p = 0.7667, meaning the median PSD did not decrease without the intervention; if anything it increased, which the authors attribute to drowsiness during long eyes-closed rest. The authors therefore conclude that the hand's proximity, not the passage of time or relaxation alone, accompanied the PSD reduction, and they frame the result as consistent with an unknown human field interacting with neuronal activity.

Load-bearing premise

The claim that a 'human field' caused the measured decrease in brain-wave power assumes that the hand's proximity was the only meaningful difference between the intervention and control conditions. If subjects sensed the hand through air movement, sound, or peripheral vision, that sensory cue, not any field, could explain the change.

Editorial extensions

If this is right

If the effect is real, EEG experiments that involve a researcher leaning near the subject should control for or report hand position, since proximity alone may shift measured power.
A non-contact, subject-blinded method for reducing EEG power could be developed into a relaxation or sleep-induction aid, pending replication.
Because the paper collapses all frequency bands into one PSD value, a replication that decomposes the change by band would show whether the drop is a broadband suppression or a specific rhythm such as alpha being reduced.
The result would strengthen the case for short-range, non-electromagnetic interactions from living tissue, and would motivate instruments that directly measure fields near the hand during the EEG change.

Reading between the lines

Editorial extensions of the paper, not claims the author makes directly.

The paper does not randomize the order of intervention and control, and some participants took part in both; a cross-over design with a sham hand-shaped object would separate a genuine field effect from expectation, fatigue, or order effects.
A distance-dependence study (hand at a few centimeters, 10 cm, 30 cm) would discriminate a field-like effect, which should fade with distance, from a cue-based effect, which would disappear once the participant cannot see or hear the hand.
The authors' interpretation invokes human magnetic fields, but no magnetic measurement was made during the protocol; co-recording with a magnetometer would test whether any field fluctuation correlates with the EEG change.

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Signed reviews

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Editorial analysis

A structured set of objections, weighed in public.

Desk editor's note, referee report, and a circularity audit.

Desk Editor's Note

read the letter

Colleague,

The one thing you should know: this is a small pilot with a suggestive but confounded result, and the authors overclaim what it shows. The new bit is the specific observation that, when an experimenter held a palm near Cz without contact, EEG power spectral density dropped relative to baseline in that same session (p=0.0043). That is an empirical data point, and they've posted the data online, which is good practice.

What the paper does well: it is transparent about its own limitations, considers drowsiness as an alternative explanation for the control group's PSD increase, and uses an exact test rather than an asymptotic approximation. The writing is clear and the protocol description is detailed enough to see the flaws.

The soft spots are the load-bearing kind. The control condition involved no hand movement, no sham object, and no matched sensory cue, so the intervention is confounded with time, order, and the participant's awareness that someone is doing something near their head. The intervention was always first and the control came two weeks later, so any time trend or order effect could produce the same pattern. The authors only report within-group Wilcoxon tests; they never test whether the change in PSD differs between intervention and control. A p-value of 0.0043 for a within-group decrease does not establish that the hand caused the decrease. In addition, records were excluded as outliers after the fact without pre-specified criteria, which can inflate significance if exclusion tracks outcome. And no 'human field' is measured, so the causal attribution is assumed rather than tested.

I don't think the paper is incoherent or dishonest. The authors acknowledge several limitations and speculate cautiously. But the central claim—that a human field caused the PSD change—is not entailed by the data. It could just as easily be sensory cueing, relaxation, or order effects. The result is a pilot observation, not a demonstrated effect.

Who is this for? Someone compiling examples of study-design pitfalls in biofield research, or a methods class on confounding. It is not a source to cite for the reality of human field effects. If this were submitted to a journal, I'd want it sent back for a redesign: sham hand, counterbalanced order, a direct between-condition comparison, and a pre-registered analysis. In its current form, I wouldn't send it to peer review; the design flaw is too fundamental to salvage by revision. But the authors' candor and data sharing make it a useful case to keep in mind.

Referee Report

5 major / 6 minor

Summary. This pilot study tests whether holding an experimenter's hand near the vertex of a participant's head without physical contact changes EEG power spectral density. Thirty participants were assigned to an intervention protocol and twenty to a control protocol; PSD was computed from the first 30 seconds of a baseline period and the last 30 seconds of a 60-second experimental period. The authors report a significant within-group decrease in the intervention group (exact Wilcoxon signed-rank test, p = 0.004353) and no significant decrease in the control group (p = 0.7667), which they interpret as evidence that a 'human field' associated with the hand modulates brain waves. They also discuss post hoc exclusion of outliers and acknowledge limitations including the narrow student sample and uncontrollable thoughts and feelings of participants.

Significance. A genuine causal effect of hand proximity on EEG would be surprising and potentially relevant to bioelectromagnetic interactions with the brain, so the question is worth asking. The manuscript has some virtues: it uses an exact nonparametric test, makes raw data available in a repository, and explicitly acknowledges several limitations. However, the central causal claim is not identifiable from the reported design: there is no sham control, no between-group statistical comparison, the intervention and control conditions are confounded with time and order, and outliers were excluded without pre-specified criteria. The paper is therefore best read as an exploratory pilot, not as evidence for a human-field effect on brain waves.

major comments (5)

[Section 2, Protocol Description] The design does not identify the intervention as the cause of the observed EEG change. The intervention condition includes the entire event of the experimenter moving a hand toward the participant's head and holding it there, while the control condition includes no analogous motor act, object, or sensory event. Air movement, faint sound, thermal cues, or peripheral awareness of a person could all plausibly change EEG, and no sham condition was used to control for these sensory and attentional features. The causal attribution to a 'human field' is therefore unsupported.
[Section 3, Results] The reported statistics are two separate within-group Wilcoxon signed-rank tests: one comparing PSD_pre and PSD_last in the intervention group (p = 0.004353) and one in the control group (p = 0.7667). No direct between-group test is reported, such as a comparison of the within-subject changes (PSD_pre minus PSD_last) between the intervention and control groups, or an interaction test in a mixed model. Consequently, the conclusion that the intervention differs from control is not statistically established.
[Section 2, Protocol Description; Section 4, Discussion] Condition is confounded with time and order: the intervention protocol was always performed first and the control protocol two weeks later, and only some participants took part in both protocols. Any time-dependent trend, increased familiarity with the laboratory, or change in alertness or mood could produce the reported pattern. In addition, because some participants contributed data to both groups, the two group-level tests are not independent, further complicating any informal comparison between them.
[Section 4, Discussion] Several records were excluded after data inspection without a pre-specified criterion, as stated in the sentence 'several records had to be excluded because they were classified as outliers, with values far beyond the expected range.' This is outcome-dependent exclusion and can inflate the reported significance. The manuscript should state the exact number of excluded records, the quantitative rule used to define an outlier, and the results of an analysis that includes all data or a sensitivity analysis under different exclusion rules.
[Section 2, Methodology] The sample-size description is internally inconsistent: the text says 'Thirty healthy students ... were recruited' but then gives 'twenty for the control group and thirty for the experimental group,' which implies fifty participants. The number actually analyzed in each group after exclusions is also not reported. The final N per group must be stated for the statistical results to be interpretable.

minor comments (6)

[Abstract and Results] The Wilcoxon signed-rank test does not directly compare medians; it tests a null hypothesis about the distribution of paired differences, often summarized by the pseudomedian. Please either report the Hodges-Lehmann estimate of the median difference or rephrase the claim as 'the distribution of PSD_pre is stochastically greater than PSD_last' rather than 'the median of PSD_pre is greater than the median of PSD_last.'
[Data Acquisition and Processing] The manuscript does not report the EEG sampling rate, filter settings, FFT window parameters, or the frequency range over which the raw-signal PSD was computed. These details are needed for reproducibility.
[Results and Discussion] Only p-values are reported; please add effect sizes and confidence intervals for the paired differences, and clarify whether the one-sided alternative was pre-specified or selected after observing the direction of the change.
[Introduction and Section 2] There are several typographical errors: 'unknow laws' should be 'unknown laws,' 'Aproveed' should be 'Approved,' and the phrase 'inclusive of all genders' is awkward and should be replaced by a precise demographic description.
[Figure 2 caption] The caption describes PSD curves but calls them 'EEG readings'; please clarify that these are power spectral density curves, not raw EEG traces, and label the axes with units and a description of what the plotted quantities represent.
[Section 4, Discussion] The speculation about drowsiness in the control group is clearly labeled as speculation, which is appropriate, but it also illustrates that the control condition is not a matched comparison for the intervention; this should be acknowledged more explicitly when interpreting the control group's PSD increase.

Circularity Check

0 steps flagged · score 0.0 of 10

No significant circularity: the study is an empirical comparison with no derivation chain, no fitted parameters, and no self-citation; the causal 'human field' interpretation is under-supported but not circular.

full rationale

The manuscript is an empirical pilot study; it contains no equation-level derivation or first-principles prediction whose output is equivalent to its input. PSD_pre and PSD_last are direct measurements from the same EEG recording periods (Section 2, Data Acquisition and Processing), and the Wilcoxon signed-rank test is a standard paired comparison. No parameter is fitted from one subset and then reported as a prediction on a closely related quantity. The authors cite no prior work of their own; references to magnetic fields [4,5] and speculative quantum/new-physics ideas [6-8] are background motivation, not load-bearing constraints. The paper's interpretive claim that hand proximity 'could induce effects' is not derived by construction: the observed within-subject PSD decrease is not definitionally identical to 'human field', and the authors do not define the field in terms of the EEG change. The main weaknesses are experimental-design threats—no sham hand condition, fixed order (intervention before control), partially overlapping samples, and post-hoc outlier exclusion—which undermine causal attribution but do not constitute circular reasoning. Section 4 itself flags 'several shortcomings', says 'we cannot control the thoughts and feelings of the subjects during the experiment', and admits 'the experiment is not free of possible artifacts'; Section 2 states the control involved no analogous hand movement. These are candid limitations, not circular steps. Therefore no circular step is identified and the score is 0.

Assumptions & free parameters 1 free parameters · 4 assumptions · 1 invented entities

The central claim rests on an unmeasured field entity, a post-hoc outlier exclusion, a non-sham control, and an unvalidated aggregate PSD measure.

free parameters (1)

Outlier exclusion rule = Not specified
Section 4 states several records were excluded as outliers but does not define the threshold; the reported p-values depend on this exclusion.

assumptions (4)

domain assumption The PSD of the raw EEG signal is a valid omnibus measure that captures changes in any frequency band
Section 2 states the raw-signal PSD was chosen because band-specific changes vary across subjects; no validation is provided that this aggregate is sensitive or unbiased.
ad hoc to paper The hand generates a field strong enough to modulate EEG
The title and conclusion attribute the PSD change to 'human fields', but no field measurement is reported and no mechanism or strength estimate is given.
ad hoc to paper Subjects could not detect the experimenter's hand
Subjects were not informed, but no blindness check or sham condition ensures they did not sense airflow, sound, or movement; this assumption underlies the field interpretation.
ad hoc to paper Excluded outliers are anomalous measurements rather than informative data points
Section 4 excludes records as outliers and links some to emotional stress, but the decision rule is post hoc and not pre-registered.

invented entities (1)

Human field (hand biofield)
purpose: Proposed cause of the observed PSD decrease during the intervention
The paper never measures a field from the hand; the entity is inferred after the fact from a within-group EEG change, and no independent falsifiable handle is given.

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Cite this review

Pith. "Pith review of Human fields and their impact on brain waves A pilot study." pith.science (2026). https://pith.science/paper/RONQJAIU

@misc{pith2026250201939,
  author       = {Pith},
  title        = {Pith review of: Human fields and their impact on brain waves A pilot study},
  year         = {2026},
  howpublished = {\url{https://pith.science/paper/RONQJAIU}},
  note         = {Machine review of arXiv:2502.01939}
}

read the original abstract

During brain function, groups of neurons fire synchronously. When these groups are large enough, the resulting electrical signals can be measured on the scalp using Electroencephalography (EEG). The amplitude of these signals can be significant depending on the size and synchronization of the neural activity. EEG waves exhibit distinct patterns based on the brain's state, such as whether it is asleep, awake, engaged in mental calculations, or performing other cognitive functions. Additionally, these patterns can be modified by external factors, such as transcranial magnetic stimulation (TMS). TMS involves bringing an antenna that generates variable electromagnetic fields close to specific areas of the skull to treat certain pathologies. Given that the human body naturally generates magnetic fields, a question arises: Can these fields influence the EEG by modulating neuronal function, causing a resonance effect, or through some unknown interaction? This study investigated whether approaching the palm of the hand to the top of the head (Intervention) could induce effects in the EEG. Power Spectral Density (PSD) was obtained for the 30 seconds preceding the intervention (PSD_pre) and the final 30 seconds of the intervention (PSD_last). The exact Wilcoxon signed-rank test suggests that the median of PSD_pre is greater than the median of PSD_last at the 95% confidence level (p-value = 0.004353). In contrast, in the control group, the test indicates that at the 95% confidence level (p-value = 0.7667), the median of PSD_pre is not greater than the median of PSD_last.

Figures

Figures reproduced from arXiv: 2502.01939 by the authors.

**Figure 2.** This figure shows a normal EEG reading and two readings considered to be out [PITH_FULL_IMAGE:figures/full_fig_p006_2.png] view at source ↗

Discussion (0). Continue with ORCID to comment.

Reference graph

Works this paper leans on

10 extracted references · 10 canonical work pages

[1]

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Leif Sornmo and Pablo Laguna. Bioelectrical Signal Processing in Cardiac and Neurological Applications. Biomedical Engineering. Academic Press, Burlington, 2005

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[2]

Case report: Nocturnal low-frequency stimulation of the centromedian thalamic nucleus improves sleep quality and seizure control

Surya Suresh, Ganne Chaitanya, Ajay Deep Kachhvah, Vladimir Vashin, Manojkumar Saranathan, and Sandipan Pati. Case report: Nocturnal low-frequency stimulation of the centromedian thalamic nucleus improves sleep quality and seizure control. Frontiers in Human Neuroscience, 18, 2024

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[3]

Septal stimulation attenuates hippocampal seizure with subregion specificity

Qingyang Zhang, Yu Wang, Fei Wang, Dongxiao Jiang, Yingjie Song, Lin Yang, Mengdi Zhang, Yi Wang, Yeping Ruan, Jiajia Fang, and Fan Fei. Septal stimulation attenuates hippocampal seizure with subregion specificity. Epilepsia Open, n/a(n/a), 2024

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[4]

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[5]

Magnetoencephalography: Evidence of magnetic fields produced by alpha- rhythm currents

David Cohen. Magnetoencephalography: Evidence of magnetic fields produced by alpha- rhythm currents. Science, 161(3843):784–786, 1968

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[6]

Consciousness in the universe: A review of the ‘orch or’ theory

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Timothy Howarth, Masoumeh Tashakori, Tuomas Karhu, Matias Rusanen, Henna Pitk¨ anen, Arie Oksenberg, and Sami Nikkonen. Excessive daytime sleepiness is associated with relative delta frequency power among patients with mild osa. Frontiers in Neurology, 15, 2024. 7

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Pith tools

Reviewed August 9, 2026 · model on record in the stance chip above.

[1] [1]

Bioelectrical Signal Processing in Cardiac and Neurological Applications

Leif Sornmo and Pablo Laguna. Bioelectrical Signal Processing in Cardiac and Neurological Applications. Biomedical Engineering. Academic Press, Burlington, 2005

work page 2005

[2] [2]

Case report: Nocturnal low-frequency stimulation of the centromedian thalamic nucleus improves sleep quality and seizure control

Surya Suresh, Ganne Chaitanya, Ajay Deep Kachhvah, Vladimir Vashin, Manojkumar Saranathan, and Sandipan Pati. Case report: Nocturnal low-frequency stimulation of the centromedian thalamic nucleus improves sleep quality and seizure control. Frontiers in Human Neuroscience, 18, 2024

work page 2024

[3] [3]

Septal stimulation attenuates hippocampal seizure with subregion specificity

Qingyang Zhang, Yu Wang, Fei Wang, Dongxiao Jiang, Yingjie Song, Lin Yang, Mengdi Zhang, Yi Wang, Yeping Ruan, Jiajia Fang, and Fan Fei. Septal stimulation attenuates hippocampal seizure with subregion specificity. Epilepsia Open, n/a(n/a), 2024

work page 2024

[4] [4]

Magnetic fields around the torso: Production by electrical activity of the human heart

David Cohen. Magnetic fields around the torso: Production by electrical activity of the human heart. Science, 156(3775):652–654, 1967

work page 1967

[5] [5]

Magnetoencephalography: Evidence of magnetic fields produced by alpha- rhythm currents

David Cohen. Magnetoencephalography: Evidence of magnetic fields produced by alpha- rhythm currents. Science, 161(3843):784–786, 1968

work page 1968

[6] [6]

Consciousness in the universe: A review of the ‘orch or’ theory

Stuart Hameroff and Roger Penrose. Consciousness in the universe: A review of the ‘orch or’ theory. Physics of Life Reviews, 11(1):39–78, 2014

work page 2014

[7] [7]

Experimental indications of non- classical brain functions

Christian Matthias Kerskens and David L´ opez P´ erez. Experimental indications of non- classical brain functions. Journal of Physics Communications, 6(10):105001, oct 2022

work page 2022

[8] [8]

Does new physics lurk inside living matter? Physics Today, 73(8):34–40, 08 2020

Paul Davies. Does new physics lurk inside living matter? Physics Today, 73(8):34–40, 08 2020

work page 2020