The Somatosensory Amplification Effect: Quantifying Ticklish Responsiveness During Sudden Co-Stimulus Introduction in a No-Safeword B*SM Paradigm

Abstract
This study investigates the psychophysiological impact of unexpected co-tickler introduction on a restrained subject’s ticklish sensitivity under No Safeword conditions. Using a single-subject design (n=1), we measured the amplitude of laughter-induced diaphragmatic contractions, vocal intensity (post-gag removal), and subjective stress markers in volunteer Bella Ink during two stimulation phases: baseline (Lead Experimenter) vs. surprise co-tickler (MJ). Results indicate a 73% increase in ticklish hyperresponsiveness (p < 0.05) following MJ’s intervention, with near-gag expulsion and rapid-onset tachypsychia necessitating protocol deviation.

Methods

Subject Preparation: Restraint: Full-body immobilization via v1 Table ImmobilizerTM, including metacarpophalangeal hyperextension cuffs and metatarsal flexion straps (toes fixed at 120° dorsiflexion). Gag: Intraoral sponge (FDA-grade cellulose, 4cm3) secured with microfoam tape (3MTM NexcareTM). Stimulus Protocol: Phase 1 (Baseline): Lead Experimenter applied intervals of: Plantar digitoplantar feathering (toes) Axillary carbon fiber brush strokes Phase 2 (Intervention): Co-tickler MJ introduced without prior cues, targeting: Intercostal fingertip palpitations Inguinal light vibrations via LT device Metrics: Objective: Laughter pitch (dB), respiratory rate (breaths/min), gag displacement pressure (Newtons). Subjective: Post-session debriefing using the B*ndage-Induced Arousal Scale (BIAS-7).

Results

Phase 1: Baseline laughter amplitude = 82dB (SD ±3.2). Respiratory rate stabilized at 24 bpm. Phase 2: Post-MJ introduction: Laughter amplitude peaked at 141dB (+72%, p=0.003). Respiratory rate spiked to 48 bpm at t=23:09, triggering gag removal. Verbal outbursts (“f*cking b*tch!”) correlated with MJ’s inguinal stimulation (r=0.89). Gag Integrity: Microfoam tape shear stress reached 12.4N (vs. 15N failure threshold).

Discussion
The introduction of an unpredicted co-tickler (MJ) induced somatosensory panic amplification, overriding baseline habituation. Notably:

Ethical Paradox: Despite No Safeword parameters, physiological risk (tachypnea, near-syncope) necessitated gag removal, suggesting safety protocols require autonomic fail-safes. Neurobehavioral Implications: MJ’s expertise in erogenous zone targeting (intercostal/inguinal) likely activated Aδ nociceptor crossover, intensifying perceived ticklishness as pseudo-p*in.

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