physarum IB-physarum-intermittency

In the only directly-testable system (Physarum), body-wide contraction FAILS to globally coordinate: coordination is intermittent and slowly-modulating — wave direction reverses and amplitude drifts — which REFUTES the global standing wave.

Observed quantities

coordination intermittent / emergent; wave direction reverses; amplitude drifts; laminar Reynolds ~0.0008

Primary source

Alim et al. 2013, PNAS
Alim et al. 2017, PNAS
2023-26 Physarum intermittency work (report cites loosely; no precise reference given)

Boundary of this block

The specific '2023-26 intermittency work' is referenced in the report WITHOUT a precise citation; the refutation is anchored to Alim et al. 2013/2017, which established the real non-global dynamics. Flag for a source pass.

Connections

Outgoing

refutes to CLAIM (refuted): Physarum holds its body-wide memory 'aloft' via a single, globally phase-locked STANDING WAVE that keeps the imprint statically fixed. measured intermittency contradicts a permanently phase-locked global wave
relates to In crows, mobbing is a self-reinforcing recruitment LOOP: 82% of scolding events recruited a mob, averaging 6.4 birds (n=103). cross-domain: the imprint is RE-CAUGHT / re-broadcast each cycle, not statically held (memory falls and is re-caught)

Incoming

relates from In crows, mobbing is a self-reinforcing recruitment LOOP: 82% of scolding events recruited a mob, averaging 6.4 birds (n=103). cross-domain: memory is RE-BROADCAST at each encounter, not statically held aloft
relates from In Physarum actomyosin, Ca2+ INHIBITS contraction — the opposite sign to animal striated muscle — and intracellular Ca2+ oscillates near-antiphase with tube radius. this local oscillator is exactly what fails to lock into one global wave