SCIENTIFIC AND DEVELOPMENTAL BRIDGES TO TIFT®

Dr. A. Janner Steffan: The bridges that gave rise to TIFT® emerged from my understanding of how the human organism functions as a living system as well as my professional knowledge of molecular biology, genetics and complex systems. They were developed through clinical observation and structural reasoning, rather than through a direct research programme designed to test TIFT. The publications gathered here were identified later because their findings and developmental concepts offer points of convergence that help make selected elements of the TIFT architecture intelligible.

1 DYNAMIC ORGANISATION AND MICRO IMPACT

These mathematical works come first because they address structure and dynamics independently of clinical schools. Their relevance to TIFT® is analogical and architectural: they do not model the human organism or test TIFT clinically.

Wang, H., & Zahl, J. (2025). Volume estimates for unions of convex sets, and the Kakeya set conjecture in

three dimensions. arXiv:2502.17655. https://doi.org/10.48550/arXiv.2502.17655 DOI / source

MATHEMATICAL PREPRINT TIFT® bridge: The global dimension and volume of a highly complex configuration are determined through the organisation of directional structures across scales. This provides a geometric bridge to the TIFT proposition that local constraints and orientations participate in the form of the whole configuration.

Deng, Y., & Hani, Z. (2023). Full derivation of the wave kinetic equation. Inventiones Mathematicae, 233(2),

543-724. https://doi.org/10.1007/s00222-023-01189-2 DOI / source

PEER REVIEWED MATHEMATICS TIFT® bridge: A macroscopic statistical dynamics is rigorously derived from numerous weak nonlinear wave interactions under precise scaling conditions. This offers a strong mathematical bridge from micro-interactions over time to emergent large-scale organisation.

Deng, Y., Hani, Z., & Ma, X. (2025). Hilbert's sixth problem: Derivation of fluid equations via Boltzmann's

kinetic theory. arXiv:2503.01800. https://doi.org/10.48550/arXiv.2503.01800 DOI / source

MATHEMATICAL PREPRINT TIFT® bridge: The authors derive macroscopic fluid equations from microscopic hard-sphere dynamics through kinetic theory. This is an especially direct mathematical bridge to the TIFT understanding that minute interactions can generate the evolving behaviour of the whole system.

SCIENTIFIC AND DEVELOPMENTAL BRIDGES TO TIFT®

2 CYCLES PERTURBATION AND RELATIONAL REGULATION

Tronick, E., & Beeghly, M. (2011). Infants' meaning-making and the development of mental health

problems. American Psychologist, 66(2), 107-119. https://doi.org/10.1037/a0021631 DOI / source

THEORETICAL REVIEW TIFT® bridge: The infant-adult system is described as dyadic, mutually regulated and meaning-making. This provides a strong bridge to regulation emerging within the relational field rather than being delivered by one person to another.

Sravish, A. V., Tronick, E., Hollenstein, T., & Beeghly, M. (2013). Dyadic flexibility during the face-to-face

still-face paradigm: A dynamic systems analysis of its temporal organization. Infant Behavior and Development, 36(3), 432-437. https://doi.org/10.1016/j.infbeh.2013.03.013 DOI / source

EMPIRICAL STUDY TIFT® bridge: Dyadic organisation is studied across time and after perturbation. The observed reorganisation provides a direct bridge to cycles, repeated difference, return and changing relational configuration.

3 GROUND ROCKING AND VESTIBULAR ORGANISATION

Harricharan, S., Nicholson, A. A., Densmore, M., Théberge, J., McKinnon, M. C., Neufeld, R. W. J., & Lanius,

R. A. (2017). Sensory overload and imbalance: Resting-state vestibular connectivity in PTSD and its dissociative subtype. Neuropsychologia, 106, 169-178. https://doi.org/10.1016/j.neuropsychologia.2017.09.010 DOI / source

NEUROIMAGING STUDY TIFT® bridge: PTSD and its dissociative subtype were associated with distinct patterns of vestibular resting-state connectivity. This directly supports the workshop link between orientation, bodily self-location and ground, while describing reorganisation rather than system failure.

Perrault, A. A., Khani, A., Quairiaux, C., Kompotis, K., Franken, P., Mühlethaler, M., Schwartz, S., & Bayer, L.

(2019). Whole-night continuous rocking entrains spontaneous neural oscillations with benefits for sleep and memory. Current Biology, 29(3), 402-411.e3. https://doi.org/10.1016/j.cub.2018.12.028 DOI / source

HUMAN EXPERIMENTAL STUDY TIFT® bridge: In healthy adults, continuous rocking entrained sleep-related neural oscillations and was associated with changes in sleep and memory. This supports a narrow bridge from rhythmic movement to entrainment; it does not by itself establish a trauma-treatment mechanism.

Kompotis, K., Hubbard, J., Emmenegger, Y., Perrault, A. A., Mühlethaler, M., Schwartz, S., Bayer, L., &

Franken, P. (2019). Rocking promotes sleep in mice through rhythmic stimulation of the vestibular system. Current Biology, 29(3), 392-401.e4. https://doi.org/10.1016/j.cub.2018.12.007 DOI / source

ANIMAL EXPERIMENTAL STUDY TIFT® bridge: The effects of rocking in mice required functional otolithic vestibular input. This supplies the specific vestibular bridge for rhythmic rocking, while the species and outcome limits must remain explicit.

SCIENTIFIC AND DEVELOPMENTAL BRIDGES TO TIFT®

4. SECURE FOUNDATION AND LATER ORGANISATION

Woodhouse, S. S., Scott, J. R., Hepworth, A. D., & Cassidy, J. (2020). Secure base provision: A new approach

to examining links between maternal caregiving and infant attachment. Child Development, 91(1), e249e265. https://doi.org/10.1111/cdev.13224 DOI / source

OBSERVATIONAL STUDY TIFT® bridge: Secure-base provision offers a concrete developmental bridge to a foundation that protects, contains and permits movement and exploration. It does not equate directly with the TIFT concept of membrane.

Lyons-Ruth, K. (2008). Contributions of the mother-infant relationship to dissociative, borderline, and

conduct symptoms in young adulthood. Infant Mental Health Journal, 29(3), 203-218. https://doi.org/10.1002/imhj.20173 DOI / source

LONGITUDINAL RESEARCH REVIEW TIFT® bridge: Longitudinal evidence links qualities of early relational organisation with later dissociative symptoms. This supports attention to the organisation of the dyad and its developmental consequences beyond isolated traumatic events.

5. PERSON PERMANENCE OBJECT CONSTANCY AND THE NO

The sequence proposed in TIFT - foundation, membrane and differentiation, protective NO, permanence of the other, object constancy and exploration - is a TIFT developmental synthesis. The sources below clarify distinct components; none demonstrates that whole sequence as a single empirical pathway.

Bell, S. M. (1970). The development of the concept of object as related to infant-mother attachment. Child

Development, 41(2), 291-311. https://doi.org/10.2307/1127033 DOI / source

EMPIRICAL DEVELOPMENTAL STUDY TIFT® bridge: Bell distinguished the developing permanence of persons from that of inanimate objects and examined their relation to infant-mother attachment. This is the most direct empirical bridge to permanence of the relational other.

McDevitt, J. B. (1975). Separation-individuation and object constancy. Journal of the American

Psychoanalytic Association, 23(4), 713-742. https://doi.org/10.1177/000306517502300402 DOI / source

FOUNDATIONAL THEORETICAL PAPER TIFT® bridge: This foundational paper articulates object constancy within separation-individuation: the capacity to retain a sufficiently stable internal relation through absence, frustration and difference. It is a developmental theory source, not contemporary experimental evidence.

Spitz, R. A. (1957). No and yes: On the genesis of human communication. New York, NY: International

Universities Press. DOI / source

FOUNDATIONAL MONOGRAPH TIFT® bridge: Spitz traces the emergence of the negative gesture and the communicative NO. For TIFT, this offers a developmental bridge to delimitation and differentiation; the further understanding of NO as a protective membrane that preserves contact is specifically TIFT.

READING THE BRIDGES WITH PRECISION

Strongest mathematical bridges: multi-scale local-to-global organisation and the emergence of macroscopic dynamics from microscopic interactions. Strongest direct clinical and developmental bridges: temporal reorganisation after perturbation; dyadic mutual regulation; vestibular connectivity in PTSD and dissociation; rhythmic rocking and vestibular input; secure-base provision; early relational organisation and later dissociation. Developmental bridges requiring explicit qualification: membrane, the protective NO and object constancy. These concepts illuminate TIFT architecture but should not be presented as empirical validation of TIFT.