Section 134 of 440
FAMILY 11: TOUCH, CHEMOSENSATION & INTEROCEPTION
Superdomain: Perception & Sensorimotor. This family contains eight stable Power records.
PWR-081 · Tactile acuity
Evidence route: Externally gated evidence dossier. Use the linked canonical tutorial for current teaching, accessibility, safety and editorial-review status; this evidence dossier does not enlarge that tutorial’s authority.
Summary. Touch can sharpen where and how it is practised, but it does not become a universal extra sense.
Definition. Capability to develop or express tactile acuity in a declared context without inheriting broader claims.
What the current evidence supports. Tactile acuity can improve through discriminative practice at a trained body site, with smaller transfer and physical limits.
Measurement boundary. Use a reliable site-specific grating/tactile threshold with skin condition, finger geometry and response method declared; do not substitute two-point distance or pain change without validation.
Myth. Read the world with a fingertip
Metric. Site-specific tactile threshold plus unfamiliar-material and functional transfer
Boundary. A trained finger threshold does not establish whole-body touch, pain cure or instant Braille literacy.
Negative and limiting findings.
A pilot chronic-low-back-pain trial did not beat sham and the intervention group reported worse pain.
Training gains approached a limit related to fingertip size and transferred less to an untrained finger.
Claims this evidence cannot support.
Superhuman touch everywhere
Grow new receptors
Braille is a generic brain hack
Tactile drills cure chronic pain
Evidence references. [10] primary empirical support; limiting or contrary evidence; [18] primary empirical support; limiting or contrary evidence; [20] primary empirical support; limiting or contrary evidence; [24] primary empirical support; limiting or contrary evidence.
Next gate. External confirmation is required before higher-authority use because: a clinical, high-risk or regulated configuration.
PWR-082 · Haptic object recognition
Evidence route: Externally gated evidence dossier. Use the linked canonical tutorial for current teaching, accessibility, safety and editorial-review status; this evidence dossier does not enlarge that tutorial’s authority.
Summary. Active touch can build detailed, durable object knowledge—through a route whose performance depends on experience and object design.
Definition. Capability to develop or express haptic object recognition in a declared context without inheriting broader claims.
What the current evidence supports. Humans can recognise and retain rich information about objects through active touch, but performance depends on object, scale, experience and access.
Measurement boundary. Declare object familiarity, scale, exploration time, hand/motor access, vision condition and same- versus crossmodal test; report errors by object class.
Myth. Know any object by touch
Metric. Novel-object identification and delayed crossmodal recognition by scale and access
Boundary. Memory for handled familiar objects does not establish universal material, hazard or navigation recognition.
Negative and limiting findings.
Age and reduced object scale lowered haptic shape discrimination.
A group comparison cannot establish that blindness biologically enhances touch.
Claims this evidence cannot support.
Blind people have automatically superior touch
Identify any object instantly
Haptic memory replaces every other sense
One object test measures tactile intelligence
Evidence references. [11] primary empirical support; limiting or contrary evidence; [17] primary empirical support; limiting or contrary evidence; [24] primary empirical support; limiting or contrary evidence; [28] limiting or contrary evidence.
Next gate. External confirmation is required before higher-authority use because: a clinical, high-risk or regulated configuration.
PWR-083 · Thermal discrimination
Evidence route: Externally gated evidence dossier. Use the linked canonical tutorial for current teaching, accessibility, safety and editorial-review status; this evidence dossier does not enlarge that tutorial’s authority.
Summary. Thermal sensitivity is a protective, context-dependent sense—not a route to heat or cold immunity.
Definition. Capability to develop or express thermal discrimination in a declared context without inheriting broader claims.
What the current evidence supports. People discriminate warm and cold, but thresholds depend strongly on body site, age and body state; durable enhancement through training is not established.
Measurement boundary. Use calibrated noninjurious warm/cold detection thresholds at a named site and starting temperature; never equate detection with tissue safety or thermoregulatory control.
Myth. Temperature-proof skin
Metric. Calibrated warm/cold threshold by body site and state
Boundary. Detection does not establish tolerance, tissue safety, core-temperature control or training.
Negative and limiting findings.
Whole-body cooling changes local sensitivity rather than simply improving it.
No mapped primary study established retained thermal-discrimination training.
Claims this evidence cannot support.
Become immune to heat or cold
Train away burn warnings
Cold exposure sharpens thermal sense
A threshold proves metabolic or autonomic control
Evidence references. [2] primary empirical support; limiting or contrary evidence; [6] primary empirical support; limiting or contrary evidence; [8] primary empirical support; limiting or contrary evidence; [16] primary empirical support; limiting or contrary evidence.
Next gate. External confirmation is required before higher-authority use because: a clinical, high-risk or regulated configuration; a restricted safety or legitimacy boundary.
PWR-084 · Nociceptive discrimination
Evidence route: Externally gated evidence dossier. Use the linked canonical tutorial for current teaching, accessibility, safety and editorial-review status; this evidence dossier does not enlarge that tutorial’s authority.
Summary. Pain is not a toughness score. Nociceptive discrimination is real, but deliberate painful training is not authorised.
Definition. Capability to develop or express nociceptive discrimination in a declared context without inheriting broader claims.
What the current evidence supports. Nociceptive discrimination exists, but Titan has no public route for training it; pain and nociception must remain distinct, and stronger tolerance is not assumed to be safer.
Measurement boundary. Name the controlled stimulus and discrimination outcome while recording the person's pain report separately; stimulus intensity is not pain and neural activity cannot settle lived experience.
Myth. Pain immunity
Metric. Ethically controlled noxious discrimination plus separate pain and harm outcomes
Boundary. Higher tolerance, lower report or altered threshold does not prove safety, health or superior capability.
Negative and limiting findings.
Noxious temporal-spatial discrimination was worse than innocuous tactile discrimination.
Tactile pain interventions are mixed and do not establish nociceptive training.
Claims this evidence cannot support.
Become pain-proof
Condition nerves with repeated injury
A high pain threshold proves toughness
Infer pain from biomarkers or behaviour
Evidence references. [2] limiting or contrary evidence; [10] limiting or contrary evidence; [14] primary empirical support; limiting or contrary evidence; [16] primary empirical support; limiting or contrary evidence; [18] limiting or contrary evidence; [25] limiting or contrary evidence; official boundary context.
Next gate. External confirmation is required before higher-authority use because: a clinical, high-risk or regulated configuration; a supervision or non-attempt boundary; a restricted safety or legitimacy boundary.
PWR-085 · Olfactory discrimination
Evidence route: Externally gated evidence dossier. Use the linked canonical tutorial for current teaching, accessibility, safety and editorial-review status; this evidence dossier does not enlarge that tutorial’s authority.
Summary. Smell training can help in some conditions, not all—and real safety still depends on alarms and environmental supports.
Definition. Capability to develop or express olfactory discrimination in a declared context without inheriting broader claims.
What the current evidence supports. Olfactory training may help some people with specific acquired smell loss, but effects are condition- and outcome-dependent and a rigorous COVID-19 trial found no advantage over placebo.
Measurement boundary. Separate threshold, discrimination, identification, distortion and participant-valued function; record diagnosis, baseline, spontaneous recovery and environmental safety supports.
Myth. Bloodhound nose
Metric. Validated threshold, discrimination and identification plus delayed daily function
Boundary. One smell-test gain does not confer universal hazard detection, diagnosis or healthy-person enhancement.
Negative and limiting findings.
Training was not superior to placebo for COVID-19-related smell loss in one randomised double-blind trial.
Post-traumatic training showed only mild threshold change without broad recovery.
Claims this evidence cannot support.
Super-smell
Detect every danger by nose
Olfactory training cures all anosmia
Sniff irritants or chemicals to toughen receptors
Evidence references. [1] primary empirical support; limiting or contrary evidence; [13] primary empirical support; limiting or contrary evidence; [23] limiting or contrary evidence; [26] limiting or contrary evidence; official boundary context.
Next gate. External confirmation is required before higher-authority use because: a clinical, high-risk or regulated configuration; a supervision or non-attempt boundary; a restricted safety or legitimacy boundary.
PWR-086 · Gustatory discrimination
Evidence route: Externally gated evidence dossier. Use the linked canonical tutorial for current teaching, accessibility, safety and editorial-review status; this evidence dossier does not enlarge that tutorial’s authority.
Summary. Basic taste recognition may be trainable—but it is not the same as flavour, nutrition or poison detection.
Definition. Capability to develop or express gustatory discrimination in a declared context without inheriting broader claims.
What the current evidence supports. Healthy adults improved short-term recognition thresholds for four basic tastes after a small controlled recall-training study; retention and real-food transfer remain unknown.
Measurement boundary. Use controlled food-safe detection/recognition concentrations by taste quality and separate smell, trigeminal sensation, intensity, liking and diet outcomes.
Myth. Supertaster at will
Metric. Delayed food-safe recognition thresholds across basic tastes and novel samples
Boundary. Threshold sensitivity does not establish flavour expertise, safety, diet quality or disease treatment.
Negative and limiting findings.
No delayed retention or functional food outcome was established.
Many apparent taste problems are actually smell-related flavour problems.
Claims this evidence cannot support.
Become a supertaster on demand
Taste allergens or poison safely
Cure flavour loss with tongue drills
More sensitive taste guarantees a better diet
Evidence references. [12] primary empirical support; limiting or contrary evidence; [16] primary empirical support; limiting or contrary evidence; [27] limiting or contrary evidence; official boundary context.
Next gate. External confirmation is required before higher-authority use because: a clinical, high-risk or regulated configuration.
PWR-087 · Interoceptive accuracy
Evidence route: Externally gated evidence dossier. Use the linked canonical tutorial for current teaching, accessibility, safety and editorial-review status; this evidence dossier does not enlarge that tutorial’s authority.
Summary. Sensing the body is not one hidden meter. The most common heartbeat test can reward good guessing rather than better perception.
Definition. Capability to develop or express interoceptive accuracy in a declared context without inheriting broader claims.
What the current evidence supports. Interoceptive accuracy is real but difficult to measure. Heartbeat counting is heavily contaminated by expectation, and training has not yet shown reliable cross-task or real-world transfer.
Measurement boundary. Use multiple validated channel-specific discrimination/detection tasks plus confidence and symptoms; never treat heartbeat counting or a wearable agreement score as a universal interoception measure.
Myth. Perfect inner radar
Metric. Convergent accuracy across independent channel-specific tasks plus calibrated confidence
Boundary. One heartbeat-counting score does not diagnose the body, prove emotional mastery or authorise ignoring symptoms.
Negative and limiting findings.
Heartbeat-counting scores dropped sharply when non-sensory estimation was restricted.
Immediate and delayed feedback improved counting similarly, implicating beliefs.
Experienced meditators were not objectively better at heartbeat detection despite greater confidence.
Training-related change did not transfer from counting to discrimination.
Claims this evidence cannot support.
Read every body signal perfectly
Heartbeat counting diagnoses health
Meditation guarantees superior interoception
Provoke stress or symptoms to train accuracy
Evidence references. [3] primary empirical support; limiting or contrary evidence; [4] primary empirical support; limiting or contrary evidence; [5] primary empirical support; limiting or contrary evidence; [15] limiting or contrary evidence; [19] primary empirical support; limiting or contrary evidence.
Next gate. External confirmation is required before higher-authority use because: a clinical, high-risk or regulated configuration; a restricted safety or legitimacy boundary.
PWR-088 · Multisensory integration
Evidence route: Externally gated evidence dossier. Use the linked canonical tutorial for current teaching, accessibility, safety and editorial-review status; this evidence dossier does not enlarge that tutorial’s authority.
Summary. The senses learn to cooperate—but extra signals help only when timing, reliability and accessibility fit the task.
Definition. Capability to develop or express multisensory integration in a declared context without inheriting broader claims.
What the current evidence supports. Multisensory timing and cue use can be trained on defined tasks, including in older adults, but benefits depend on congruence and do not establish generally ‘heightened senses.’
Measurement boundary. Declare modalities, reliability, timing, congruence, illusion/task, age and device state; compare unimodal and combined performance and record overload/conflict.
Myth. Unlock a sixth sense
Metric. Added value of combined versus best unimodal cues on an unfamiliar delayed task
Boundary. A multisensory illusion or lab gain does not establish a new sense, general cognition or real-world safety.
Negative and limiting findings.
Older adults showed less change in some prior crossmodal expectations despite temporal improvement.
No mapped study established durable everyday function or universal benefit from extra cues.
Claims this evidence cannot support.
Fuse senses into a sixth sense
More cues always improve performance
Multisensory games prevent falls
Neural integration proves broad cognitive enhancement
Evidence references. [7] primary empirical support; limiting or contrary evidence; [9] primary empirical support; limiting or contrary evidence; [21] primary empirical support; limiting or contrary evidence; [22] primary empirical support; limiting or contrary evidence.
Next gate. External confirmation is required before higher-authority use because: a clinical, high-risk or regulated configuration.
Family source register
Numbers in each dossier refer to this family register. A source can support one bounded proposition while simultaneously limiting transfer, certainty, generalisation or safety.
[1] M. Damm; L. K. Pikart; H. Reimann; S. Burkert; Ö. Göktas; B. Haxel; S. Frey; I. Charalampakis; A. Beule; B. Renner; T. Hummel; K.-B. Hüttenbrink (2014). Olfactory training is helpful in postinfectious olfactory loss: a randomized, controlled, multicenter study. Primary research. https://pubmed.ncbi.nlm.nih.gov/23929687/
[2] C. Liniger; A. Albeanu; J. F. Moody; J. Richez; D. Bloise; J. P. Assal (1991). The Thermocross: a simple tool for rapid assessment of thermal sensation thresholds. Primary research. https://pubmed.ncbi.nlm.nih.gov/1855438/
[3] C. Ring; J. Brener; K. Knapp; J. Mailloux (2015). Effects of heartbeat feedback on beliefs about heart rate and heartbeat counting: a cautionary tale about interoceptive awareness. Primary research. https://pubmed.ncbi.nlm.nih.gov/25553874/
[4] O. Desmedt; O. Luminet; O. Corneille (2018). The heartbeat counting task largely involves non-interoceptive processes: Evidence from both the original and an adapted counting task. Primary research. https://pubmed.ncbi.nlm.nih.gov/30218689/
[5] R. Müller; C. Vögele; I. Van Diest; A. Schulz (2025). Post-learning stress after a heartbeat perception training facilitates interoceptive accuracy in the heartbeat counting task, but not in the heartbeat discrimination task. Primary research. https://pubmed.ncbi.nlm.nih.gov/41314278/
[6] V. Heldestad Lilliesköld; E. Nordh (2018). Method-of-limits; Cold and warm perception thresholds at proximal and distal body regions. Primary research. https://pubmed.ncbi.nlm.nih.gov/30215024/
[7] A. R. Seitz; R. Kim; L. Shams (2006). Sound facilitates visual learning. Primary research. https://pubmed.ncbi.nlm.nih.gov/16860741/
[8] N. A. Coull; S. G. Hodder; G. Havenith (2022). Age comparison of changes in local warm and cold sensitivity due to whole body cooling. Primary research. https://pubmed.ncbi.nlm.nih.gov/35180960/
[9] D. P. McGovern; S. Burns; R. J. Hirst; F. N. Newell (2022). Perceptual training narrows the temporal binding window of audiovisual integration in both younger and older adults. Primary research. https://pubmed.ncbi.nlm.nih.gov/35752266/
[10] G. L. Moseley; N. M. Zalucki; K. Wiech (2008). Tactile discrimination, but not tactile stimulation alone, reduces chronic limb pain. Primary research. https://pubmed.ncbi.nlm.nih.gov/18054437/
[11] J. F. Norman; J. M. Dukes; T. N. Palmore (2020). Aging and haptic shape discrimination: the effects of variations in size. Primary research. https://pubmed.ncbi.nlm.nih.gov/32895441/
[12] Y. Otsubo; M. Miyagi; H. Sekiya; O. Kano; S. Ebihara (2022). Improving taste sensitivity in healthy adults using taste recall training: a randomized controlled trial. Primary research. https://pubmed.ncbi.nlm.nih.gov/35974039/
[13] C. Langdon; E. Lehrer; J. Berenguer; S. Laxe; I. Alobid; L. Quintó; F. Mariño-Sánchez; M. Bernabeu; C. Marin; J. Mullol (2018). Olfactory Training in Post-Traumatic Smell Impairment: Mild Improvement in Threshold Performances: Results from a Randomized Controlled Trial. Primary research. https://pubmed.ncbi.nlm.nih.gov/29790420/
[14] K. S. Frahm; C. D. Mørch; O. K. Andersen (2018). Tempo-spatial discrimination is lower for noxious stimuli than for innocuous stimuli. Primary research. https://pubmed.ncbi.nlm.nih.gov/29112535/
[15] S. S. Khalsa; D. Rudrauf; A. R. Damasio; R. J. Davidson; A. Lutz; D. Tranel (2008). Interoceptive awareness in experienced meditators. Primary research. https://pubmed.ncbi.nlm.nih.gov/18503485/
[16] M. W. Heft; M. E. Robinson (2010). Age differences in orofacial sensory thresholds. Primary research. https://pubmed.ncbi.nlm.nih.gov/20651093/
[17] F. Hutmacher; C. Kuhbandner (2018). Long-Term Memory for Haptically Explored Objects: Fidelity, Durability, Incidental Encoding, and Cross-Modal Transfer. Primary research. https://pubmed.ncbi.nlm.nih.gov/30376424/
[18] C. Ryan; N. Harland; B. T. Drew; D. Martin (2014). Tactile acuity training for patients with chronic low back pain: a pilot randomised controlled trial. Primary research. https://pubmed.ncbi.nlm.nih.gov/24571855/
[19] A. Sugawara; Y. Terasawa; R. Katsunuma; A. Sekiguchi (2020). Effects of interoceptive training on decision making, anxiety, and somatic symptoms. Primary research. https://pubmed.ncbi.nlm.nih.gov/32206084/
[20] M. Wong; R. M. Peters; D. Goldreich (2013). A physical constraint on perceptual learning: tactile spatial acuity improves with training to a limit set by finger size. Primary research. https://pubmed.ncbi.nlm.nih.gov/23719803/
[21] G. A. Gabriel; L. R. Harris; D. Y. P. Henriques; M. Pandi; J. L. Campos (2022). Multisensory visual-vestibular training improves visual heading estimation in younger and older adults. Primary research. https://pubmed.ncbi.nlm.nih.gov/36092809/
[22] J. M. O'Brien; J. S. Chan; A. Setti (2020). Audio-Visual Training in Older Adults: 2-Interval-Forced Choice Task Improves Performance. Primary research. https://pubmed.ncbi.nlm.nih.gov/33304234/
[23] T. L. I. Serrano; M. A. Antonio; L. T. Giacomin; A. M. Morcillo; J. Dirceu Ribeiro; E. Sakano (2025). Olfactory training for the treatment of COVID-19 related smell loss: a randomised double-blind controlled trial. Primary research. https://pubmed.ncbi.nlm.nih.gov/40202093/
[24] K. Siuda-Krzywicka; Ł. Bola; M. Paplińska; E. Sumera; K. Jednoróg; A. Marchewka; M. W. Śliwińska; A. Amedi; M. Szwed (2016). Massive cortical reorganization in sighted Braille readers. Primary research. https://pubmed.ncbi.nlm.nih.gov/26976813/
[25] International Association for the Study of Pain (2026). IASP Terminology: pain, nociception and related terms. Official authority. https://www.iasp-pain.org/resources/terminology/
[26] U.S. National Institute on Deafness and Other Communication Disorders (2026). Smell (Olfactory) Disorders. Official authority. https://www.nidcd.nih.gov/health/smell-disorders
[27] U.S. National Institute on Deafness and Other Communication Disorders (2026). Taste Disorders. Official authority. https://www.nidcd.nih.gov/health/taste-disorders
[28] B. G. Bhirud; L. M. Chandan; A. Chawla (2016). Do Congenitally Blind Individuals have Better Haptic Object Perception Compared to Blindfolded Sighted Individuals?. Primary research. https://pubmed.ncbi.nlm.nih.gov/29957910/