F3: Controllability Detection Has Specific Neural Circuitry

Integration

This premise elevates the biological mechanism (vmPFC-DRN pathway) to an engineering-relevant constraint. The vmPFC detects the dimension of controllability via glutamatergic projections to inhibitory GABAergic interneurons in the DRN. When stressors are controllable, the vmPFC inhibits the DRN, suppressing the 5-HT-driven stress cascade. Prior controllable experience provides proactive resilience.

This circuitry is computationally specific: it tracks instrumental contingency -- whether action produces outcome. This specificity is what makes it an engineering lever.

Why this matters for the architecture

The controllability circuit provides the mechanism by which the architecture's "micro-controllability" actuator class works. Providing structured experiences where the human detects action-consequence contingency activates the vmPFC-DRN pathway, which suppresses the stress cascade, which restores PFC function. This is a specific, mechanistic pathway from actuator input to state change.

It also underwrites the design of the state-conditioned gating table: in the red regime, where controllability inference is biased toward uncontrollability (F4), the architecture must provide controllability rather than demand it.

Evidence status

ESTABLISHED. Maier & Seligman 2016 and Amat et al. 2006 provide the primary evidence.