---
category: Advanced Human Technology
created: 2025-07-23
description: Synthetic telepathy, also known as the Frey effect, is a technology that
  allows the brain to receive messages perceived as voice transmissions through microwave
  input signals.
start: 1961
summary: Synthetic Telepathy, also known as the Frey Effect, is a technology discovered
  by Allan H. Frey in 1961.
tags:
- concept
- technology
- military
- psi
title: Synthetic Telepathy
updated: 2025-07-23
---

[Synthetic Telepathy](/concepts/synthetic-telepathy/), also known as the Frey Effect, is a technology discovered by [Allan H. Frey](/people/allan-h-frey/) in 1961. It involves using microwave input signals to allow the brain to receive messages that are perceived as voice transmissions, without any auditory input. This phenomenon suggests a direct interaction between electromagnetic energy and the human nervous system.[^1]

Frey's research demonstrated that living organisms are complex electrochemical systems that can be influenced by electromagnetic energy. He showed that by synchronizing the pulse rate of a microwave beam with a frog's heart, he could speed up, slow down, or even stop the heart. This raised concerns about the potential for [Psychotronic Weapons](/concepts/psychotronic-weapons/) to affect human physiology and behavior.[^1]

---

[^1]: Jacobsen, Annie. *Phenomena: The Secret History of the U.S. Government's Investigations into Extrasensory Perception and Psychokinesis*. Little, Brown and Company, 2017.