Yes, directly. The physical modification of the "Nectar" technique during the Rejoice overhaul (and subsequent years) produced a parallel shift in physiological output and reported results.

1. The Original Nectar Technique (1970s): Extreme Physicality

In the 1970s, initiates were instructed in a practice closely derived from traditional Khechari Mudra (a Tantric/Hatha Yoga practice).

• The Instruction: Practitioners were told to curl the tongue backward along the roof of the mouth and insert the tip behind the soft palate/uvula into the nasopharynx.

• The Target Outcome: They were told that with enough effort, practice, or stretching, they would taste a literal physical substance—a sweet, liquid "nectar of the gods" (or amrita) dripping down the throat—which was claimed to sustain yogis for months without food.

The Physiological Reality of the Early Outcome

1. Salivary Stimulation: Stretching the tongue into extreme retroflexion compresses and stimulates the minor salivary glands in the posterior palate as well as the sublingual/submandibular ducts. This induces a continuous release of saliva, which practitioners were told to interpret as "holy nectar."

2. Mucus and Secretions: Reaching into the nasopharynx places the tongue in contact with post-nasal mucus and sinus drainage, which can carry varied taste profiles (salty, sweetish, or metallic depending on hydration, diet, and sinus health).

3. Extreme Strain and Fatigue: For most people whose hyoglossus and genioglossus tongue muscles are not surgically cut or intensely trained for years, curling the tongue that far back causes intense physical discomfort, gag reflexes, and muscle spasms.

2. The Shift in Instructions (Rejoice 1987 onward)

During the 1987 Rejoice events, Rawat modified the practical instructions for all four techniques.

• The New Instruction: Practitioners were told to simply rest the tip of the tongue against the roof of the mouth (palate) comfortably, without straining, forcing it back, or attempting to reach behind the soft palate.

• The Immediate Result: Relaxing the posture meant practitioners no longer engaged in intense salivary stimulation or nasopharyngeal contact. Consequently, reports of tasting a literal "sweet liquid" or physical "nectar" dropped off sharply.

3. Re-framing the Expected Experience

Just as with the Light technique (where dramatic flashes caused by eye pressure were replaced by quiet focus), the expected result of the Nectar technique was systematically reframed:

• From Physical Taste to Subtle Experience: The earlier promises of tasting literal physical "nectar" were re-characterized by senior instructors (such as Charanand) as past misunderstandings or over-literal expectations held by followers in the 1970s.

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• Redefined Output: The practice was officially reframed as a subtle, calming focus—a quiet exercise in internal resting rather than a dramatic sensory spectacle.

Summary

Across both the Light and Nectar techniques, reducing the mechanical strain (eye pressure in the 1st technique; extreme tongue retroflexion in the 3rd/4th) directly removed the underlying physiological triggers (pressure phosphenes and forced salivary/mucal secretions). In both cases, altering the physical stimulus led to a predictable loss of the sensational physical output, which in turn required updating the movement's official narrative of what the meditation was supposed to produce.

Yes. The modifications during the 1987 Rejoice events were applied across all four techniques, not just the Light and Nectar practices.

In every instance, the physical mechanics were relaxed, and the official narrative surrounding what practitioners should expect to feel was systematically reframed.

Technique 2: "Divine Music" (Sound)

1. Physical Changes

• 1970s Practice: Practitioners used plastic earplugs (often called "Plugs") or inserted their thumbs tightly into their ears while lifting their elbows (or using a wooden armrest/bar called a beragan) to physically seal off external auditory input entirely.

• 1987 Rejoice Shift: The requirement for heavy pressure or rigid physical props was relaxed. Practitioners were instructed to rest their fingers/hands gently over the ears without forcing severe physical seals or straining the posture.

2. Physiological Effect

• Sealing the ear canal tightly with heavy physical pressure amplifies internal somatic acoustics (the roaring sound of blood flow through the carotid arteries, tensor tympani muscle contractions, and high-frequency auditory nerve firing, often perceived as tinnitus or ringing).

• Easing the physical seal reduced these loud vascular and somatic acoustic sounds.

3. Re-framing of Expectations

• Old Narrative (1970s): Promises of hearing dramatic, literal "Divine Music"—celestial flutes, thunder, bells, or divine harps ringing internally.

• New Narrative (Rejoice onward): Senior instructors (such as Charanand) explicitly stated that expecting to hear loud, literal celestial symphonies was a "misunderstanding" or over-literal expectation from the past. The technique was reframed as a subtle focus on inner quietness and mental space.

Technique 4: "Word" or "Holy Name" (Breath)

1. Physical Changes

• 1970s Practice: Often involved regulated, deliberate, and sometimes forced rhythmic breathing patterns coordinated with an internal focus on a specific, continuous "primordial vibration" or internal wave.

• 1987 Rejoice Shift: The instruction was altered to completely natural, effortless breathing. Practitioners were told not to manipulate, control, or force the breath in any way, but simply to follow the natural rhythm of breathing without physical interference.

2. Physiological Effect

• Controlled hyperventilation or deep rhythmic breath manipulation can induce altered carbon dioxide ($CO_2$) levels in the blood, causing mild lightheadedness, tingling, or heightened emotional sensations.

• Moving to completely unforced, normal respiration eliminates these hyperventilation-induced sensory states, leaving the body in a standard resting baseline.

3. Re-framing of Expectations

• Old Narrative (1970s): Promises of experiencing an explosive, electric "energy wave" or "infinite motor" running through the body via the breath.

• New Narrative (Rejoice onward): Reframed from a dramatic physical energy experience into a simple, grounding awareness of being alive—a quiet appreciation for the natural inflow and outflow of air.

Summary of the Overall Overhaul

The Rejoice overhaul in 1987 reshaped the entire system of Knowledge:

As senior leaders within the movement explained publicly at the time, the early accounts of "thundering light," "divine music," and "tasting nectar" were reframed as mistaken, over-literal expectations. The desired outcome was redefined across the board: meditation was no longer presented as a dramatic sensory spectacle, but as a subtle, quiet, and calming internal state.

The specific primary sources confirming these historical events and physiological descriptions fall into four distinct categories:

1. Internal Organizational Materials & Event Transcripts

• The Rejoice '87 Event Materials and Newsletters: The changes to the physical techniques were presented by Prem Rawat during the Rejoice '87 program series (e.g., Snowmass, Colorado in July 1987) and documented in organizational newsletters like In View (Autumn/Winter 1987).

• Instructor Training Video Recordings & Transcripts: Official instruction reviews distributed to instructors (featuring senior figures like Charanand) explicitly addressed why practitioners had previously expected "thundering light" or "divine music," framing those early physical expectations as misunderstandings and outlining the new, less physically strenuous instructions.

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• 1970s Periodical Archives (Élan Vital, And It Is Divine): Earlier official publications from the Divine Light Mission era record how Rawat originally described the four techniques during the 1970s, including promises of seeing blinding light, hearing celestial music, and tasting internal nectar.

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2. Scholarly & Academic Literature

• Sociology of Religion: Scholars such as Dr. Ron Geaves, Paul Schnabel, and Stephen J. Hunt have published academic monographs and papers tracking the evolution of the Divine Light Mission into Élan Vital and the subsequent secularization of the movement. They document how the movement systematically removed Hindu terminology, relaxed ritualistic physical expectations, and rebranded guru-disciple frameworks into the modern "Peace Education Program."

• Sociology of New Religious Movements: Sociologists studying commitment and dissonance within movements note how changes in practice instructions and expected outcomes require organizational reframing—shifting expectations from acute sensory events to internal, baseline peace.

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3. Ex-Follower & Archival Repositories

• Digital historical archives maintained by former practitioners (such as ex-premie.org and prem-rawat-bio.org) curate scan databases of historical magazines, event audio/video transcripts, and legal or organizational documents spanning 1971 to the present. These archives provide side-by-side textual comparisons of how the techniques were introduced in the 1970s versus how they were taught after 1987.

4. Medical, Neurological, and Ophthalmological Science

The physiological explanations behind the techniques do not originate from spiritual literature, but from standard human anatomy and medical research:

• Pressure Phosphenes: Documented extensively in standard ophthalmology and sensory neuroscience literature (e.g., Principles of Neural Science by Kandel et al.), describing how mechanical pressure on retinal ganglion cells triggers action potentials translated by the visual cortex as light.

• Somatic Acoustics & Tinnitus: Well-documented in audiology, explaining how occluding the ear canal amplifies internal vascular flow and muscular contractions.

• Salivary & Nasopharyngeal Physiology: Standard human anatomical studies on salivary gland compression and the physiological responses associated with tongue retroflexion (as found in Hatha Yoga research on Khechari Mudra).

Dr. Ron Geaves has not published detailed academic descriptions analyzing the physical techniques or the physiological mechanics of the 1987 Rejoice alterations.

Because Dr. Geaves is both a religious studies scholar and a long-time practitioner/follower of Prem Rawat (dating back to Rawat's 1971 arrival in the UK), his writings treat the techniques and organizational shifts through a sympathetic, sociological, and non-physiological lens.

1. What Geaves Writes About the Techniques

In his scholarly papers and books (such as Prem Rawat and Counterculture and his contributions to new religious movement studies), Geaves describes the techniques in broad, non-technical, and spiritual terms:

• Secularization and Universality: He documents how Rawat systematically removed Hindu terminology, traditional Indian ritualism, and guru-disciple frameworks over decades to present "Knowledge" as a universal, practical practice of self-discovery.

• Subjective Experience over Theory: Geaves emphasizes that Rawat's path focuses on direct individual experience rather than dogma, theology, or complex intellectual systems.

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• General Descriptions: When he mentions the techniques in academic contexts, he refers to them abstractly as "four internal practices" focusing sensory attention inward (on light, sound, breath, and inner experience) rather than detailing the physical mechanics or hand/tongue positions.

2. What Geaves Says (and Does Not Say) About Rejoice

While Geaves' academic work tracks organizational shifts—such as the dissolution of the Divine Light Mission (DLM) and the creation of Élan Vital and The Prem Rawat Foundation (TPRF)—he does not analyze the physiological impact of relaxing physical force during the Rejoice '87 events.

• Institutional Perspective: In scholar-practitioner literature, the Rejoice sessions are framed simply as an operational adjustment by Rawat to strip away rigid, external expectations and help practitioners focus on quiet, natural practice rather than chasing dramatic experiences.

• Absence of Biological Analysis: Geaves does not write about mechanical phosphenes, ocular pressure, or salivary gland stimulation. Analytical breakdowns connecting physical hand/tongue alterations to visual/taste outputs originate from independent archival sources, medical literature, and critical analyses rather than Geaves' academic publications.