Acoustic Pressures in the Head from Pulsed Microwaves: Can They Explain the Havana Syndrome?

TechRxiv · 2025 · Unclear · Insufficient evidence

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UnclearInsufficient evidencePaper 2553

The paper discusses the microwave auditory effect from pulsed microwave exposure and considers whether acoustic pressures generated in the head could explain health conditions such as Havana Syndrome, emphasizing the need to evaluate risks from electromagneti…

Study snapshot

PublicationTechRxiv · 2025

Study typeother

Reported directionUnclear

Evidence ratingInsufficient

Abstract

Category: Biophysics Tags: microwave auditory effect,pulsed microwaves,Havana Syndrome,electromagnetic fields,acoustic pressure,health risk,high powered microwave pulses DOI: 10.36227/techrxiv.175502739.93949559/v1 URL: techrxiv.org Overview The microwave auditory effect—referring to "clicks" or "buzzing" sensations that a person experiences when their head is exposed to pulsed microwave energy, such as emitted by radar transmitters—has been known since the 1960s. Background - Originally considered a threshold hearing phenomenon. - The effect has gained renewed interest due to the advent of high powered microwave sources in recent decades. Findings There is discussion about whether this effect could pose a potential danger—especially health risks—for individuals exposed to high powered microwave pulses. Conclusion This study considers if acoustic pressures in the head, generated by pulsed microwaves, can explain health conditions such as the "Havana Syndrome," highlighting the importance of evaluating risks from electromagnetic field exposures.

Machine Enhanced Logic

AI evidence extraction

Structured fields below were generated from the paper’s abstract and metadata to make the evidence easier to inspect. Automated extraction may be incomplete or incorrect; verify important details against the original paper.

Study typeother

Effect directionunclear

PopulationNot supplied

Sample sizeNot supplied

Exposuremicrowave

Evidence strengthInsufficientConfidence: 62% · Peer reviewed: no

Main findings

Outcomes measured

microwave auditory effect (clicks/buzzing sensations)
acoustic pressure in the head
potential health risks
Havana Syndrome (as a proposed explanation context)

View raw extracted JSON

{
  "study_type": "other",
  "exposure": {
    "band": "microwave",
    "source": "high powered microwave pulses (e.g., radar transmitters)",
    "frequency_mhz": null,
    "sar_wkg": null,
    "duration": null
  },
  "population": null,
  "sample_size": null,
  "outcomes": [
    "microwave auditory effect (clicks/buzzing sensations)",
    "acoustic pressure in the head",
    "potential health risks",
    "Havana Syndrome (as a proposed explanation context)"
  ],
  "main_findings": "The paper discusses the microwave auditory effect from pulsed microwave exposure and considers whether acoustic pressures generated in the head could explain health conditions such as Havana Syndrome, emphasizing the need to evaluate risks from electromagnetic field exposures.",
  "effect_direction": "unclear",
  "limitations": [],
  "evidence_strength": "insufficient",
  "confidence": 0.62,
  "peer_reviewed_likely": "no",
  "keywords": [
    "microwave auditory effect",
    "pulsed microwaves",
    "Havana Syndrome",
    "electromagnetic fields",
    "acoustic pressure",
    "health risk",
    "high powered microwave pulses",
    "radar transmitters"
  ],
  "suggested_hubs": [
    {
      "slug": "occupational-exposure",
      "weight": 0.25,
      "reason": "Mentions radar transmitters and high powered microwave pulses as sources, which can be relevant to occupational settings."
    }
  ]
}

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AI-extracted fields are generated from the abstract and metadata and may be incomplete or incorrect. This material is for informational purposes and is not medical advice.

Identifiers and source

DOI: 10.36227/techrxiv.175502739.93949559/v1
PubMed: Not supplied

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