Nancy McMoneagle: “Then we have a program based on our spatial angle modulation audio technology, and the program is called Event Horizon, and this program was designed by Bob Holbrook.” (#16 - Nancy "Scooter" McMoneagle of the Monroe Institute, 2016-02-09) Design claims are not results The 2012 article describes how SAM is built and why its developers expect it to work. It makes strong comparative claims, that SAM acts faster and with more flexibility than other audio methods, but it presents no data. The results Lane reported later were studies that did not show powerful effects and a pilot without controls. Until controlled results are published, treat SAM's advantages as intentions. The audio is one ingredient Atwater himself says SAM is meant to be used with other tools: a darkened room, group conditioning such as affirmation and communion, and a curriculum that teaches skills like breath work and visualization, which is how Institute programs are built. A participant's report from a SAM-supported program therefore cannot be credited to the audio alone. Watch the label and the date
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Spatial Angle Modulation
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Hemi-Sync, SAM and Monroe Sound Science are different names, and they are sometimes used loosely: Monroe Sound Science is the Institute's umbrella label, and its own page lists SAM as one technique. Descriptions also change over time. The 2012 article describes the first version, the Institute presented version 2.0 in 2013, and its website now uses Monroe Sound Science. Check the date and wording of any source before applying it to a particular recording. Play it as intended The Institute's audio depends on stereo placement. Nancy McMoneagle stresses headsets or earbuds when describing Hemi-Sync listening, and Atwater's article describes SAM as presented over stereo headphones or speakers. Use stereo headphones in a quiet room, follow the program's instructions, and never listen while driving or doing anything that needs your full attention. Treat the physics as a hypothesis The microtubule rationale rests on the Penrose-Hameroff proposal that consciousness involves quantum coherence in neurons, a speculative idea, and the article words it as a supposition and a hypothesis. A theory behind a design is not evidence that the design does what is intended. Judge SAM by what listeners report and what controlled tests eventually show. Health caution
SAM is described as an audio support for exploring awareness, not a medical treatment, and Lane's three studies did not demonstrate powerful relaxation effects. If you have a seizure disorder, a serious mental-health condition, or any doubt about whether audio programs are right for you, read the publisher's guidance and talk to your clinician first. What is Spatial Angle Modulation (SAM)? Spatial Angle Modulation, or SAM, is an audio method the Monroe Institute began investigating in 2008 as a complement to Hemi-Sync. Instead of two tones beating against each other, it uses a single tone that is digitally moved around the stereo field, fast enough that the listener hears a tremolo, a rapid flutter in the tone. Skip Atwater and co-inventor Mike Turner developed it, and Atwater described the design in the Institute's 2012 TMI Journal. Nancy McMoneagle summed it up in an interview posted in 2017 as a single tone that, at least as it sounds, is moving through space. It appears in some Institute programs, alone or layered with music, nature sounds and spoken guidance. How is SAM different from Hemi-Sync and binaural beats?